def simulate_amplifier():
circuit = Circuit('Amplifier')
R_1 = [100]
R_2 = [20]
R_C = [10]
R_E = [2]
R_L = [1]
C_1 = [10]
C_2 = [10]
R1 = random.choice(R_1)
R2 = random.choice(R_2)
RC = random.choice(R_C)
RE = random.choice(R_E)
RL = random.choice(R_L)
C1 = random.choice(C_1)
C2 = random.choice(C_2)
circuit.R(1, 5, 2, R1@u_kΩ) #kOhm
circuit.R(2, 2, 0, R2@u_kΩ) #kOhm
circuit.R('C', 5, 4, RC@u_kΩ) #kOhm
circuit.R('E', 3, 0, RE@u_kΩ) #kOhm
circuit.R('Load', 'out', 0, RL@u_MΩ) #MOhm
circuit.C(1, 'in', 2, C1@u_uF) #uF
circuit.C(2, 4, 'out', C2@u_uF) #uF
circuit.BJT(1, 4, 2, 3, model='bjt') # Q is mapped to BJT !
circuit.model('bjt', 'npn', bf=80, cjc=pico(5), rb=100)
V_vector = [0.5]
w_vector = [1E3]
V = random.choice(V_vector)
w = random.choice(w_vector)
circuit.V('power', 5, circuit.gnd, 15@u_V)
circuit.V('var','in',circuit.gnd, f'DC 0 AC {V} SIN(0 {V}V {w})')
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time = (1/w/25)@u_s,end_time=(4/w)@u_s)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plt.title('')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['in'], axis=axe)
plot(analysis.out, axis=axe)
plt.legend(('input', 'output'), loc=(.05,.1))
plt.tight_layout()
plt.savefig('gallery/amplifier.png')
return
def plot(self, analysis, pathInNode, pathOutNode):
figure = plt.figure(1, (10, 5))
axe = plt.subplot(111)
plt.title('')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis[pathInNode], axis=axe)
ledgend = ['In']
for i in range(self.__num_inversores - 1):
node = "tmp" + str(i+1)
plot(analysis[node], axis=axe)
ledgend.append(node)
ledgend.append(pathOutNode)
plot(analysis[pathOutNode], axis=axe)
plt.legend(ledgend, loc=(.05,.1))
plt.tight_layout()
plt.show()
# circuit.Pulse('pulse', 'gate', 'source', 0@u_V, Vin, duty_cycle, period)
circuit.R('gate', 'gate', 'clock', 1 @ u_Ω)
circuit.Pulse('pulse', 'clock', circuit.gnd, 0 @ u_V, 2. * Vin, duty_cycle,
period)
circuit.X('D', '1N5822', circuit.gnd, 'source')
circuit.L(1, 'source', 1, L)
circuit.R('L', 1, 'out', RL)
circuit.C(1, 'out', circuit.gnd, Cout) # , initial_condition=0@u_V
circuit.R('load', 'out', circuit.gnd, Rload)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=period / 300, end_time=period * 150)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis.out, axis=axe)
plot(analysis['source'], axis=axe)
# plot(analysis['source'] - analysis['out'], axis=axe)
# plot(analysis['gate'], axis=axe)
plt.axhline(y=float(Vout), color='red')
plt.legend(('Vout [V]', 'Vsource [V]'), loc=(.8, .8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'buck-converter.png')
circuit.R(1, multiplier, multiplier+1, mega(1))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period/200, end_time=source.period*20)
####################################################################################################
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
axe.set_title('Voltage Multiplier')
axe.set_xlabel('Time [s]')
axe.set_ylabel('Voltage [V]')
axe.grid()
# Fixme: axis vs axe ...
plot(analysis['in'], axis=axe)
for i in range(1, multiplier+1):
y = analysis[str(i)]
if i & 1: # for odd multiplier the ground is permuted
y -= analysis['in']
plot(y, axis=axe)
# axe.axhline(-multiplier*source.amplitude)
axe.set_ylim(-multiplier*1.1*source.amplitude, 1.1*source.amplitude)
axe.legend(['input'] + ['*' + str(i) for i in range(1, multiplier+1)] ,
loc=(.2,.8))
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'voltage-multiplier.png')
else:
print('tau = ', float(circuit['L1'].inductance) / float(circuit['R1'].resistance))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=micro(1), end_time=source.period*3)
if element_type == 'capacitor':
axe = plt.subplot(121)
title = "Capacitor: voltage is constant"
else:
axe = plt.subplot(122)
title = "Inductor: current is constant"
axe.set_title(title)
axe.grid()
current_scale = 1000
plot(analysis['in'])
plot(analysis['out'])
# Fixme: resistor current, scale
plot((analysis['in'] - analysis.out)/float(circuit['R1'].resistance)*current_scale)
axe.set_ylim(-11, 11)
axe.set_xlabel('t [s]')
axe.set_ylabel('[V]')
axe.legend(('Vin [V]', 'Vout [V]', 'I'), loc=(.8,.8))
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'capacitor-inductor.png')
####################################################################################################
#
# End
circuit.C(1, 'comparator', circuit.gnd, 100 @ u_nF)
# Reference
circuit.R(2, 'output', 'reference', 100 @ u_kΩ)
circuit.R(3, 'vcc', 'reference', 100 @ u_kΩ)
circuit.R(4, 'reference', circuit.gnd, 100 @ u_kΩ)
# Comparator
# Fixme: ngspice is buggy with such subcircuit
# circuit.subcircuit(basic_comparator)
# circuit.X('comparator', 'BasicComparator', 'reference', 'comparator', 'vcc', circuit.gnd, 'output')
circuit.NonLinearVoltageSource(1,
'output',
circuit.gnd,
expression='V(reference, comparator)',
table=((-micro(1), 0), (micro(1),
source.dc_value)))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
simulator.initial_condition(
comparator=0) # Fixme: simulator.nodes.comparator == 0
analysis = simulator.transient(step_time=1 @ u_us, end_time=500 @ u_us)
# Fixme: Xyce fails with Time step too small
figure = plt.figure(1, (20, 10))
plot(analysis.reference)
plot(analysis.comparator)
plot(analysis.output)
plt.tight_layout()
plt.show()
# f# save_figure('figure', 'astable.png')
circuit.V('supply', 'vdd', 'vss', supply)
circuit.V('ground', 'vss', circuit.gnd, circuit.gnd)
####################################################################################################
# SIMULATE IMPORTED CIRCUIT
print("Simulated circuit:")
print(str(circuit))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=0.001@u_ns, end_time=4@u_ns)
####################################################################################################
# PLOT RESULTS OF SIMULATION
plt.subplot(2, 1, 1)
plot(analysis['A'])
plot(analysis['B'])
plt.title('NAND2')
plt.legend(('A [V]', 'B [V]'), loc=(.8,.8))
plt.ylabel('Vin [V]')
plt.subplot(2, 1, 2)
plot(analysis['output'])
plt.xlabel('t [s]')
plt.ylabel('Vout [V]')
plt.tight_layout()
plt.show()
libraries_path = find_libraries()
spice_library = SpiceLibrary(libraries_path)
figure1 = plt.figure(1, (20, 10))
circuit = Circuit('half-wave rectification')
circuit.include(spice_library['1N4148'])
source = circuit.SinusoidalVoltageSource('input',
'in',
circuit.gnd,
amplitude=10 @ u_V,
frequency=50 @ u_Hz)
circuit.X('D1', '1N4148', 'in', 'output')
circuit.R('load', 'output', circuit.gnd, 100 @ u_Ω)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period / 200,
end_time=source.period * 2)
axe = plt.subplot(221)
plt.title('Half-Wave Rectification')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['in'], axis=axe)
plot(analysis.output, axis=axe)
plt.legend(('input', 'output'), loc=(.05, .1))
plt.ylim(float(-source.amplitude * 1.1), float(source.amplitude * 1.1))
plt.show()
circuit.X('Dz', 'd1n5919brl', circuit.gnd, 2)
circuit.X('D', '1N4148', 2, 'out')
circuit.C('', circuit.gnd, 'out', 220@u_uF)
circuit.R('load', circuit.gnd, 'out', 1@u_kΩ)
#?# Fixme: circuit.nodes[2].v, circuit.branch.current
# print circuit.nodes
# Simulator(circuit, ...).transient(...)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period/200, end_time=ac_line.period*10)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis['L'] / 100, axis=axe)
plot(analysis.out, axis=axe)
###plot((analysis.out - analysis['L']) / 100, axis=axe)
###plot(analysis.out - analysis['2'], axis=axe)
###plot((analysis['2'] - analysis['1']) / 100, axis=axe)
# or:
# plt.plot(analysis.out.abscissa, analysis.out)
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8,.8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#f# save_figure('figure', 'capacitive-half-wave-rectification-post-zener.png')
# bottom_inductor = circuit.L('output_bottom', 'output_bottom', circuit.gnd, inner_inductance)
# output_inductor = circuit.L('output', 'output', circuit.gnd, outer_inductance)
# circuit.CoupledInductor('output_top', output_inductor.name, top_inductor.name, coupling)
# circuit.CoupledInductor('output_bottom', output_inductor.name, bottom_inductor.name, coupling)
circuit.R('load', 'output', circuit.gnd, kilo(1))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
# simulator.initial_condition(input_top=0, input_bottom=0, output_top=0, output_bottom=0)
analysis = simulator.transient(step_time=modulator.period/1000, end_time=modulator.period)
figure = plt.figure(1, (20, 10))
plt.title('Ring Modulator')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['Vmodulator'])
plot(analysis['Vcarrier'])
# plot(analysis['output'])
plt.legend(('modulator', 'carrier', 'output'), loc=(.05,.1))
####################################################################################################
plt.show()
####################################################################################################
#
# End
#
####################################################################################################
circuit.VoltageControlledSwitch('input', 'sw_node', 'sw_drive', circuit.gnd, 'sw1', model='switch1')
circuit.model('switch1', 'SW', Ron=.002@u_Ohm, Roff=1@u_MOhm, Vt=3.0@u_V)
print(circuit)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=0.1E-6, end_time=50E-3)
NUMBER_PLOTS = '2'
#plots of circuit components
figure = plt.figure(1, (10, 5))
plot1 = plt.subplot(int(NUMBER_PLOTS+'11'))
plot(analysis.sw_drive, color='r')
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.legend(('Switch Drive',''), loc=(.05,.1))
plot2 = plt.subplot(int(NUMBER_PLOTS+'12'))
plot(analysis.sw_node, color='r')
plot((analysis.sw_node)/circuit['Rload'].resistance,color='b')
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.legend(('Switch Output','Load Current'), loc=(.05,.1))
circuit.R(2, 2, 0, 20@u_kΩ)
circuit.R('C', 5, 4, 10@u_kΩ)
circuit.BJT(1, 4, 2, 3, model='bjt') # Q is mapped to BJT !
circuit.model('bjt', 'npn', bf=80, cjc=pico(5), rb=100)
circuit.R('E', 3, 0, 2@u_kΩ)
circuit.C(2, 4, 'out', 10@u_uF)
circuit.R('Load', 'out', 0, 1@u_MΩ)
####################################################################################################
figure = plt.figure(1, (20, 10))
# .ac dec 5 10m 1G
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period/200, end_time=source.period*2)
axe = plt.subplot(111)
plt.title('')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['in'], axis=axe)
plot(analysis.out, axis=axe)
plt.legend(('input', 'output'), loc=(.05,.1))
plt.tight_layout()
plt.show()
#f# save_figure('figure', 'ac-coupled-amplifier-plot.png')
sim_end_time = datetime.datetime.now()
print()
print('Simulation End Time =', sim_end_time)
elapsed = sim_end_time - sim_start_time
print('Total Simulation Time =', elapsed)
print()
#####
# Plotting
#####
#plots of circuit components
figure = plt.figure(1, (10, 5))
axe = plt.subplot(111)
plot(analysis.out, axis=axe)
# plot(analysis.gate_drive1_net, axis=axe)
plot(analysis.source2/circuit['Rload_on'].resistance,axis=axe)
plt.axhline(y=float(Vout), color='red')
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
# plots of mcu internal signals
'''
figure = plt.figure(2, (10, 5))
axe = plt.subplot(111)
circuit.X('D2', '1N4148', 'output_minus', circuit.gnd)
circuit.X('D3', '1N4148', circuit.gnd, 'output_plus')
circuit.X('D4', '1N4148', 'output_minus', 'bridge_in_plus')
# load and filter cap
circuit.X('load', 'CONSTANT_POWER_LOAD', 'output_plus', 'output_minus', P=Pl)
circuit.C('1', 'output_plus', 'output_minus', C, initial_condition=10 @ u_V)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period / 2000,
end_time=source.period * 20,
use_initial_condition=True)
axe = plt.subplot(111)
plt.title('Dynamo Hub LED Driver\nRegulator Modeled As Constant Power Load')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['in'], axis=axe)
plot(analysis.output_plus - analysis.output_minus, axis=axe, linewidth=2.0)
plt.legend((
'Internal Hub Voltage Source',
'Voltage Across Regulator Input',
),
loc='best')
plt.ylim(float(-source.amplitude * 1.1), float(source.amplitude * 1.1))
plt.tight_layout()
plt.show()
sim_end_time = datetime.datetime.now()
print()
print('Simulation End Time =', sim_end_time)
elapsed = sim_end_time - sim_start_time
print('Total Simulation Time =', elapsed)
print()
#####
# Plotting
#####
#plots of circuit components
figure = plt.figure(1, (10, 5))
axe = plt.subplot(111)
plot(analysis.sense_net, axis=axe)
plot(analysis.esr, axis=axe)
# plot(analysis.gate_drive1_net, axis=axe)
# plot(analysis.source2/circuit['Rload_on'].resistance,axis=axe)
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
# plots of mcu internal signals
'''
figure = plt.figure(2, (10, 5))
axe = plt.subplot(111)
circuit.gnd,
amplitude=10 @ u_V,
frequency=50 @ u_Hz)
circuit.X('D1', '1N4148', 'in', 'output')
circuit.R('load', 'output', circuit.gnd, 100 @ u_Ω)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period / 200,
end_time=source.period * 2)
axe = plt.subplot(221)
plt.title('Half-Wave Rectification')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['in'], axis=axe)
plot(analysis.output, axis=axe)
plt.legend(('input', 'output'), loc=(.05, .1))
plt.ylim(float(-source.amplitude * 1.1), float(source.amplitude * 1.1))
####################################################################################################
#cm# half-wave-rectification.m4
circuit.C('1', 'output', circuit.gnd, 1 @ u_mF)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period / 200,
end_time=source.period * 2)
axe = plt.subplot(222)
tau_measured = popt[0]
# Fixme: use Unit().canonise()
print('tau {0} = {1}'.format(element_type, tau.canonise().str_space()))
print('tau measured {0} = {1:.1f} ms'.format(element_type, tau_measured * 1000))
if element_type == 'capacitor':
axe = plt.subplot(121)
title = "Capacitor: voltage is constant"
else:
axe = plt.subplot(122)
title = "Inductor: current is constant"
axe.set_title(title)
axe.grid()
current_scale = 1000
plot(analysis['in'])
plot(analysis['out'])
# Fixme: resistor current, scale
plot((analysis['in'] - analysis.out)/float(circuit['R1'].resistance)*current_scale)
axe.axvline(x=float(tau), color='red')
axe.set_ylim(-11, 11)
axe.set_xlabel('t [s]')
axe.set_ylabel('[V]')
axe.legend(('Vin [V]', 'Vout [V]', 'I'), loc=(.8,.8))
#o#
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'capacitor-inductor.png')
# circuit.PulseVoltageSource('pulse', 'gate', 'source', 0@u_V, Vin, duty_cycle, period)
circuit.R('gate', 'gate', 'clock', 1@u_Ω)
circuit.PulseVoltageSource('pulse', 'clock', circuit.gnd, 0@u_V, 2.*Vin, duty_cycle, period)
circuit.X('D', '1N5822', circuit.gnd, 'source')
circuit.L(1, 'source', 1, L)
circuit.R('L', 1, 'out', RL)
circuit.C(1, 'out', circuit.gnd, Cout) # , initial_condition=0@u_V
circuit.R('load', 'out', circuit.gnd, Rload)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=period/300, end_time=period*150)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis.out, axis=axe)
plot(analysis['source'], axis=axe)
# plot(analysis['source'] - analysis['out'], axis=axe)
# plot(analysis['gate'], axis=axe)
plt.axhline(y=float(Vout), color='red')
plt.legend(('Vout [V]', 'Vsource [V]'), loc=(.8,.8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#f# save_figure('figure', 'buck-converter.png')
circuit = Circuit('half-wave rectification')
circuit.include(spice_library['1N4148'])
source = circuit.Sinusoidal('input', 'in', circuit.gnd, amplitude=10, frequency=50)
circuit.X('D1', '1N4148', 'in', 'output')
circuit.R('load', 'output', circuit.gnd, 100)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period/200, end_time=source.period*2)
axe = plt.subplot(221)
plt.title('Half-Wave Rectification')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['in'], axis=axe)
plot(analysis.output, axis=axe)
plt.legend(('input', 'output'), loc=(.05,.1))
plt.ylim(-source.amplitude*1.1, source.amplitude*1.1)
####################################################################################################
#cm# half-wave-rectification.m4
circuit.C('1', 'output', circuit.gnd, milli(1))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period/200, end_time=source.period*2)
axe = plt.subplot(222)
plt.title('Half-Wave Rectification with filtering')
circuit.R('relay', 'VccAnalog', 1, 50@u_Ω)
circuit.L('relay', 1, 'collector', 100@u_mH)
circuit.include(spice_library['1N5822']) # Schottky diode
diode = circuit.X('D', '1N5822', 'collector', 'VccAnalog')
# Fixme: subcircuit node
# diode.minus.add_current_probe(circuit)
####################################################################################################
figure = plt.figure(1, (20, 10))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=period/1000, end_time=period*1.1)
axe = plt.subplot(111)
plt.title('')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis.base, axis=axe)
plot(analysis.collector, axis=axe)
# Fixme: current probe
# plot((analysis['1'] - analysis.collector)/circuit.Rrelay.resistance, axis=axe)
plot(analysis['1'] - analysis.collector, axis=axe)
plt.legend(('Vbase', 'Vcollector'), loc=(.05,.1))
plt.tight_layout()
plt.show()
#f# save_figure('figure', 'relay.png')
circuit.X('D', '1N4148', 2, 'out')
circuit.C('', circuit.gnd, 'out', 220 @ u_uF)
circuit.R('load', circuit.gnd, 'out', 1 @ u_kΩ)
# # Fixme: circuit.nodes[2].v, circuit.branch.current
# print circuit.nodes
# Simulator(circuit, ...).transient(...)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period / 200,
end_time=ac_line.period * 10)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis['L'] / 100, axis=axe)
plot(analysis.out, axis=axe)
###plot((analysis.out - analysis['L']) / 100, axis=axe)
###plot(analysis.out - analysis['2'], axis=axe)
###plot((analysis['2'] - analysis['1']) / 100, axis=axe)
# or:
# plt.plot(analysis.out.abscissa, analysis.out)
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8, .8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'capacitive-half-wave-rectification-post-zener.png')
from PySpice.Probe.Plot import plot
from PySpice.Spice.Netlist import Circuit
from PySpice.Unit import *
####################################################################################################
#r# We will drive the transmission line with a pulse source and use a standard 50 Ω load.
circuit = Circuit('Transmission Line')
circuit.PulseVoltageSource('pulse', 'input', circuit.gnd, 0@u_V, 1@u_V, 1@u_ns, 1@u_us)
circuit.LosslessTransmissionLine('delay', 'output', circuit.gnd, 'input', circuit.gnd,
impedance=50, time_delay=40e-9)
circuit.R('load', 'output', circuit.gnd, 50@u_Ω)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=1e-11, end_time=100e-9)
####################################################################################################
figure = plt.figure(None, (20, 6))
plot(analysis['input'])
plot(analysis['output'])
plt.xlabel('Time [s]')
plt.ylabel('Voltage (V)')
plt.grid()
plt.legend(['input', 'output'], loc='upper right')
plt.show()
#f# save_figure('figure', 'time-delay.png')
rms_voltage=230 @ u_V,
frequency=50 @ u_Hz)
# circuit.subcircuit(HP54501A(diode_model='1N4148'))
# circuit.X('hp54501a', 'HP54501A', 'input', circuit.gnd)
circuit.C(1, 'input', circuit.gnd, 1 @ u_uF)
circuit.X('D1', diode_model, 'line_plus', 'top')
circuit.X('D2', diode_model, 'scope_ground', 'input')
circuit.X('D3', diode_model, circuit.gnd, 'top')
circuit.X('D4', diode_model, 'scope_ground', circuit.gnd)
circuit.R(1, 'top', 'output', 10 @ u_Ω)
circuit.C(2, 'output', 'scope_ground', 50 @ u_uF)
circuit.R(2, 'output', 'scope_ground', 900 @ u_Ω)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period / 100,
end_time=ac_line.period * 3)
figure = plt.figure(None, (20, 6))
plot(analysis.input)
plot(analysis.Vinput)
plot(analysis.output - analysis.scope_ground)
plt.legend(('Vin [V]', 'I [A]'), loc=(.8, .8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.show()
#fig# save_figure(figure, 'hp54501a-cem.png')
circuit.X('D1', '1N4148', circuit.gnd, 1)
circuit.X('Dz1', 'd1n5919brl', 1, 'out')
circuit.C('ac', 1, 2, nano(470))
circuit.R('ac', 2, 'in', 470)
# # Fixme: circuit.nodes[2].v, circuit.branch.current
# print circuit.nodes
# Simulator(circuit, ...).transient(...)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period/200, end_time=ac_line.period*10)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis['in'] / 100, axis=axe)
plot(analysis.out, axis=axe)
plot((analysis.out - analysis['in']) / 100, axis=axe)
plot(analysis.out - analysis['1'], axis=axe)
plot((analysis['1'] - analysis['2']) / 100, axis=axe)
# or:
# plt.plot(analysis.out.abscissa, analysis.out)
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8,.8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'transform-less-power-supply.png')
from PySpice.Probe.Plot import plot
from PySpice.Spice.Netlist import Circuit
from PySpice.Unit import *
####################################################################################################
#r# We will drive the transmission line with a pulse source and use a standard 50 Ω load.
circuit = Circuit('Transmission Line')
circuit.PulseVoltageSource('pulse', 'input', circuit.gnd, 0 @ u_V, 1 @ u_V, 1 @ u_ns, 1 @ u_us)
circuit.LosslessTransmissionLine('delay', 'output', circuit.gnd, 'input', circuit.gnd,
impedance=50, time_delay=40e-9)
circuit.R('load', 'output', circuit.gnd, 50 @ u_Ω)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=1e-11, end_time=100e-9)
####################################################################################################
figure = plt.figure(None, (20, 6))
plot(analysis['input'])
plot(analysis['output'])
plt.xlabel('Time [s]')
plt.ylabel('Voltage (V)')
plt.grid()
plt.legend(['input', 'output'], loc='upper right')
plt.show()
#f# save_figure('figure', 'time-delay.png')
circuit.X('Dz1', 'd1n5919brl', 1, 'out')
circuit.C('ac', 1, 2, nano(470))
circuit.R('ac', 2, 'in', 470)
# # Fixme: circuit.nodes[2].v, circuit.branch.current
# print circuit.nodes
# Simulator(circuit, ...).transient(...)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period / 200,
end_time=ac_line.period * 10)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis['in'] / 100, axis=axe)
plot(analysis.out, axis=axe)
plot((analysis.out - analysis['in']) / 100, axis=axe)
plot(analysis.out - analysis['1'], axis=axe)
plot((analysis['1'] - analysis['2']) / 100, axis=axe)
# or:
# plt.plot(analysis.out.abscissa, analysis.out)
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8, .8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'transform-less-power-supply.png')
#!# We include the operational amplifier module.
circuit.include(spice_library['LMV981'])
#!# We define the subcircuits.
for subcircuit in (PowerIn(), Opamp(), JackIn(), JackOut()):
circuit.subcircuit(subcircuit)
# print(str(circuit))
#!# We perform a transient simulation.
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=milli(.1), end_time=milli(3))
figure = plt.figure(1, (20, 10))
plot(analysis['2']) # JackIn input
plot(analysis['7']) # Opamp output
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8,.8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'kicad-example.png')
####################################################################################################
#
# End
#
####################################################################################################
circuit.X('D2', '1N4148', 3, 2)
circuit.X('Dz', 'd1n5919brl', circuit.gnd, 'out')
circuit.C('', circuit.gnd, 'out', 250@u_uF)
circuit.R('load', circuit.gnd, 'out', 1@u_kΩ)
#?# Fixme: circuit.nodes[2].v, circuit.branch.current
# print circuit.nodes
# Simulator(circuit, ...).transient(...)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period/200, end_time=ac_line.period*50)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis.L / 100, axis=axe)
plot(analysis.out, axis=axe)
plot(analysis['2'], axis=axe)
plot(analysis['3'], axis=axe)
plot((analysis.out - analysis['3']), axis=axe)
# plot((analysis['2'] - analysis['3']), axis=axe)
#plot((analysis.L - analysis['1']) / 100, axis=axe)
###plot((analysis.out - analysis['L']) / 100, axis=axe)
###plot(analysis.out - analysis['2'], axis=axe)
###plot((analysis['2'] - analysis['1']) / 100, axis=axe)
# or:
# plt.plot(analysis.out.abscissa, analysis.out)
plt.legend(('Vin [V]', 'Vout [V]', 'V2 [V]', 'V3 [V]', 'VC2 [V]'), loc=(.8,.8))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=source.period / 200,
end_time=source.period * 20)
####################################################################################################
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
axe.set_title('Voltage Multiplier')
axe.set_xlabel('Time [s]')
axe.set_ylabel('Voltage [V]')
axe.grid()
# Fixme: axis vs axe ...
plot(analysis['in'], axis=axe)
for i in range(1, multiplier + 1):
y = analysis[str(i)]
if i & 1: # for odd multiplier the ground is permuted
y -= analysis['in']
plot(y, axis=axe)
# axe.axhline(-multiplier*source.amplitude)
axe.set_ylim(float(-multiplier * 1.1 * source.amplitude),
float(1.1 * source.amplitude))
axe.legend(['input'] + ['*' + str(i) for i in range(1, multiplier + 1)],
loc=(.2, .8))
plt.tight_layout()
plt.show()
#f# save_figure('figure', 'voltage-multiplier.png')
from Transformer import Transformer
####################################################################################################
circuit = Circuit('Transformer')
ac_line = circuit.AcLine('input', 'input', circuit.gnd, rms_voltage=230, frequency=50)
circuit.subcircuit(Transformer(turn_ratio=10))
circuit.X('transformer', 'Transformer', 'input', circuit.gnd, 'output', circuit.gnd)
circuit.R('load', 'output', circuit.gnd, kilo(1))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period/200, end_time=ac_line.period*3)
figure = plt.figure(1, (20, 10))
plot(analysis.input)
plot(analysis.output)
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8,.8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'transformer.png')
####################################################################################################
#
# End
#
####################################################################################################
'kicad-pyspice-example.cir')
parser = SpiceParser(path=kicad_netlist_path)
#!# We build the circuit and translate the ground (5 to 0).
circuit = parser.build_circuit(ground=5)
#!# We include the operational amplifier module.
circuit.include(spice_library['LMV981'])
#!# We define the subcircuits.
for subcircuit in (PowerIn(), Opamp(), JackIn(), JackOut()):
circuit.subcircuit(subcircuit)
# print(str(circuit))
#!# We perform a transient simulation.
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=100 @ u_us, end_time=3 @ u_ms)
figure = plt.figure(1, (20, 10))
plot(analysis['2']) # JackIn input
plot(analysis['7']) # Opamp output
plt.legend(('Vin [V]', 'Vout [V]'), loc=(.8, .8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'kicad-example.png')
circuit.X('Dz', 'd1n5919brl', circuit.gnd, 'out')
circuit.C('', circuit.gnd, 'out', micro(250))
circuit.R('load', circuit.gnd, 'out', kilo(1))
# # Fixme: circuit.nodes[2].v, circuit.branch.current
# print circuit.nodes
# Simulator(circuit, ...).transient(...)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period / 200,
end_time=ac_line.period * 50)
figure = plt.figure(1, (20, 10))
axe = plt.subplot(111)
plot(analysis.L / 100, axis=axe)
plot(analysis.out, axis=axe)
plot(analysis['2'], axis=axe)
plot(analysis['3'], axis=axe)
plot((analysis.out - analysis['3']), axis=axe)
# plot((analysis['2'] - analysis['3']), axis=axe)
#plot((analysis.L - analysis['1']) / 100, axis=axe)
###plot((analysis.out - analysis['L']) / 100, axis=axe)
###plot(analysis.out - analysis['2'], axis=axe)
###plot((analysis['2'] - analysis['1']) / 100, axis=axe)
# or:
# plt.plot(analysis.out.abscissa, analysis.out)
plt.legend(('Vin [V]', 'Vout [V]', 'V2 [V]', 'V3 [V]', 'VC2 [V]'),
# Simulation parameters
#####
period = 2.5 @ u_us
print()
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
simulator.initial_condition(output_v=0)
analysis = simulator.transient(step_time=period / 300, end_time=period * 300)
#####
# Plot
#####
figure = plt.figure(1, (10, 5))
axe = plt.subplot(111)
plot(analysis.sw_node, axis=axe)
# plot(analysis.output_v, axis=axe)
# plot current
# plot(analysis.output_v/5, axis=axe)
plt.legend(('Vout [V]', 'Iout [A]'), loc=(.8, .8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.tight_layout()
plt.show()
#f# save_figure('figure', 'buck-converter.png')
circuit.R(2, 'output', 'reference', kilo(100))
circuit.R(3, 'vcc', 'reference', kilo(100))
circuit.R(4, 'reference', circuit.gnd, kilo(100))
# Comparator
# Fixme: ngspice is buggy with such subcircuit
# circuit.subcircuit(basic_comparator)
# circuit.X('comparator', 'BasicComparator', 'reference', 'comparator', 'vcc', circuit.gnd, 'output')
circuit.NonLinearVoltageSource(1, 'output', circuit.gnd,
expression='V(reference, comparator)',
table=((-micro(1), 0),
(micro(1), source.dc_value))
)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
simulator.initial_condition(comparator=0) # Fixme: simulator.nodes.comparator == 0
analysis = simulator.transient(step_time=micro(1), end_time=micro(500))
figure = plt.figure(1, (20, 10))
plot(analysis.reference)
plot(analysis.comparator)
plot(analysis.output)
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'astable.png')
####################################################################################################
#
# End
#
####################################################################################################
circuit.R(1, 'input', 'output', 10 @ u_kΩ)
circuit.R(2, 'output', circuit.gnd, 1 @ u_kΩ)
amplitude = 10 @ u_V
frequency = 50 @ u_Hz
ngspice_shared = MyNgSpiceShared(amplitude=amplitude,
frequency=frequency,
send_data=False)
simulator = circuit.simulator(temperature=25,
nominal_temperature=25,
simulator='shared',
ngspice_shared=ngspice_shared)
period = float(frequency.period)
analysis = simulator.transient(step_time=period / 200, end_time=period * 2)
####################################################################################################
figure1 = plt.figure(1, (20, 10))
plt.title('Voltage Divider')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis.input)
plot(analysis.output)
plt.legend(('input', 'output'), loc=(.05, .1))
plt.ylim(float(-amplitude * 1.1), float(amplitude * 1.1))
plt.tight_layout()
plt.show()
#fig# save_figure(figure1, 'voltage-divider.png')
circuit.R('relay', 'VccAnalog', 1, 50@u_Ω)
circuit.L('relay', 1, 'collector', 100@u_mH)
circuit.include(spice_library['1N5822']) # Schottky diode
diode = circuit.X('D', '1N5822', 'collector', 'VccAnalog')
# Fixme: subcircuit node
# diode.minus.add_current_probe(circuit)
####################################################################################################
figure = plt.figure(1, (20, 10))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=period/1000, end_time=period*1.1)
axe = plt.subplot(111)
plt.title('')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis.base, axis=axe)
plot(analysis.collector, axis=axe)
# Fixme: current probe
# plot((analysis['1'] - analysis.collector)/circuit.Rrelay.resistance, axis=axe)
plot(analysis['1'] - analysis.collector, axis=axe)
plt.legend(('Vbase', 'Vcollector'), loc=(.05,.1))
plt.tight_layout()
plt.show()
#fig# save_figure(figure, 'relay.png')
circuit.include(spice_library['1N4148'])
diode_model = '1N4148'
ac_line = circuit.AcLine('input', 'input', circuit.gnd, rms_voltage=230@u_V, frequency=50@u_Hz)
# circuit.subcircuit(HP54501A(diode_model='1N4148'))
# circuit.X('hp54501a', 'HP54501A', 'input', circuit.gnd)
circuit.C(1, 'input', circuit.gnd, 1@u_uF)
circuit.X('D1', diode_model, 'line_plus', 'top')
circuit.X('D2', diode_model, 'scope_ground', 'input')
circuit.X('D3', diode_model, circuit.gnd, 'top')
circuit.X('D4', diode_model, 'scope_ground', circuit.gnd)
circuit.R(1, 'top', 'output', 10@u_Ω)
circuit.C(2, 'output', 'scope_ground', 50@u_uF)
circuit.R(2, 'output', 'scope_ground', 900@u_Ω)
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
analysis = simulator.transient(step_time=ac_line.period/100, end_time=ac_line.period*3)
figure = plt.figure(None, (20, 6))
plot(analysis.input)
plot(analysis.Vinput)
plot(analysis.output - analysis.scope_ground)
plt.legend(('Vin [V]', 'I [A]'), loc=(.8,.8))
plt.grid()
plt.xlabel('t [s]')
plt.ylabel('[V]')
plt.show()
#f# save_figure('figure', 'hp54501a-cem.png')
# output_inductor = circuit.L('output', 'output', circuit.gnd, outer_inductance)
# circuit.CoupledInductor('output_top', output_inductor.name, top_inductor.name, coupling)
# circuit.CoupledInductor('output_bottom', output_inductor.name, bottom_inductor.name, coupling)
circuit.R('load', 'output', circuit.gnd, kilo(1))
simulator = circuit.simulator(temperature=25, nominal_temperature=25)
# simulator.initial_condition(input_top=0, input_bottom=0, output_top=0, output_bottom=0)
analysis = simulator.transient(step_time=modulator.period / 1000,
end_time=modulator.period)
figure = plt.figure(1, (20, 10))
plt.title('Ring Modulator')
plt.xlabel('Time [s]')
plt.ylabel('Voltage [V]')
plt.grid()
plot(analysis['Vmodulator'])
plot(analysis['Vcarrier'])
# plot(analysis['output'])
plt.legend(('modulator', 'carrier', 'output'), loc=(.05, .1))
####################################################################################################
plt.show()
####################################################################################################
#
# End
#
####################################################################################################