def test_transformer(self): import os from PySpice.Spice.Netlist import Circuit circuit = Circuit('Diode Characteristic Curve') circuit.L('primary', 'Vlp', 'Vdrain', '{l_trf}') circuit.C('resonance', 'Vlv', 'Vdrain', '{cap_r}') circuit.L('secondary', 'Vls', 'ghv', '{Ls}') circuit.R('secondary', 'Vls', 1, 5.15) circuit.K('flyback', 'Lprimary', 'Lsecondary', 1)
def test(self): self._test_spice_declaration( Resistor(Circuit(''), '1', 'n1', 'n2', 100), 'R1 n1 n2 100'.lower()) self._test_spice_declaration( Resistor(Circuit(''), '1', 'n1', 'n2', kilo(1)), 'R1 n1 n2 1k'.lower()) self._test_spice_declaration( Resistor(Circuit(''), '1', 'n1', 'n2', kilo(1), ac=kilo(2), multiplier=2, scale=1.5, temperature=25, device_temperature=26, noisy=True), 'R1 n1 n2 1k ac=2k dtemp=26 m=2 noisy=1 scale=1.5 temp=25'.lower()) self._test_spice_declaration( Resistor(Circuit(''), '1', 'n1', 'n2', kilo(1), noisy=False), 'R1 n1 n2 1k'.lower()) self._test_spice_declaration( XSpiceElement(Circuit(''), '1', 1, 0, model='cap'), 'A1 1 0 cap'.lower())
def test_ground_node(self): circuit = Circuit('') circuit.V('input', 'in', circuit.gnd, '10V') circuit.R(1, 'in', 'out', 9 @ u_kΩ) circuit.R(2, 'out', circuit.gnd, 1 @ u_kΩ) self.assertTrue(circuit.has_ground_node()) circuit = Circuit('') circuit.V('input', 'in', 'fake_ground', '10V') circuit.R(1, 'in', 'out', 9 @ u_kΩ) circuit.R(2, 'out', 'fake_ground', 1 @ u_kΩ) self.assertFalse(circuit.has_ground_node())
def nmos_characteristics(Vd, Vg): circuit = Circuit('NMOS Input Characteristic') circuit.include( './app/circuits/libraries/transistor/ptm_65nm_nmos_bulk.mod') # Define the DC supply voltage value Vdd = float(Vd) # Instanciate circuit elements Vgate = circuit.V('gate', 'gatenode', circuit.gnd, u_V(float(Vg))) Vdrain = circuit.V('drain', 'vdd', circuit.gnd, u_V(Vdd)) # M <name> <drain node> <gate node> <source node> <bulk/substrate node> circuit.MOSFET(1, 'vdd', 'gatenode', circuit.gnd, circuit.gnd, model='ptm65nm_nmos') simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.dc(Vdrain=slice(0, Vdd, .01)) figure, ax = plt.subplots(figsize=(20, 10)) ax.plot(analysis['vdd'], u_A(-analysis.Vdrain)) ax.legend('NMOS characteristic') ax.grid() ax.set_xlabel('Vds [V]') ax.set_ylabel('Id [A]') return circuit, analysis, plt
def negative_clamper(v, r, c, f): print(v, r, c, f) circuit = Circuit('Negative Clamper') circuit.include('./app/circuits/libraries/diode/switching/1N4148.lib') source = circuit.SinusoidalVoltageSource('input', 'in', circuit.gnd, amplitude=u_V(float(v)), frequency=u_Hz(float(f))) circuit.C('C1', 'in', 'output', u_mF(float(c))) circuit.X('D1', '1N4148', 'output', circuit.gnd) circuit.R('load', 'output', circuit.gnd, u_Ohm(float(r))) simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=source.period / 200, end_time=source.period * 2) plt.close('all') plt.title('Negative Clamper') plt.xlabel('Time [s]') plt.ylabel('Voltage [V]') plt.grid() plt.plot(analysis['in']) plt.plot(analysis.output) plt.legend(('input', 'output'), loc=(.05, .1)) plt.tight_layout() return circuit, analysis, plt
def high_pass_rc_filter(v, r, c): circuit = Circuit('Low-Pass RC Filter') circuit.SinusoidalVoltageSource('input', 'in', circuit.gnd, amplitude=u_V(float(v))) C1 = circuit.C(1, 'in', 'out', u_uF(float(c))) R1 = circuit.R(1, 'out', circuit.gnd, u_kΩ(float(r))) break_frequency = 1 / (2 * math.pi * float(R1.resistance * C1.capacitance)) print("Break frequency = {:.1f} Hz".format(break_frequency)) simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.ac(start_frequency=1 @ u_Hz, stop_frequency=1 @ u_MHz, number_of_points=10, variation='dec') # print(analysis.out) plt.close('all') figure, axes = plt.subplots(2, figsize=(20, 10)) plt.title("Bode Diagram of a Low-Pass RC Filter") bode_diagram( axes=axes, frequency=analysis.frequency, gain=20 * np.log10(np.absolute(analysis.out)), phase=np.angle(analysis.out, deg=False), marker='.', color='blue', linestyle='-', ) for ax in axes: ax.axvline(x=break_frequency, color='red') plt.tight_layout() return circuit, analysis, plt
def simulate_RLC(w=2000,V=2,R=10,L=3,C=320,**kwargs): circuit = Circuit('Name me please') circuit.R('1', 1, 2,R@u_kΩ) circuit.L('1', 2, 3,L@u_H) circuit.C('1', 3, 0,C@u_nF) #circuit.V('1', circuit.gnd,1 ,f'SIN(0 {V} {w})') circuit.V('1',0,1, f'DC 0 AC {V} SIN(0 {V} {w})') dt = 2*np.pi/w*4 tf = 5/w simulator = circuit.simulator(temperature=25, nominal_temperature=25) #analysis = simulator.transient(step_time=0.1@u_ms, end_time=tf@u_s) analysis = simulator.transient(step_time=dt@u_ms, end_time=tf@u_s) if kwargs.get('view',False): #print(str(circuit)) fig = plt.figure(figsize=(20,4)) # create a figure object ax = fig.add_subplot(1, 1, 1) plt.plot(analysis['1']-analysis['2'],label='R') plt.plot(analysis['2']-analysis['3'],label='L') ax.plot(analysis['3'],label='C') #ax.set_ylim(-int(V*1.1)-10,int(V*1.1)+10) ax.legend() ax.set_title(f'freq : {w}, voltage: {V}') ax.set_xlabel('time (ms)') ax.set_ylabel('current (ma)') plt.savefig('gallery/RLC_example.png') print(f'resonance was at {np.sqrt(1/(L*C))}') return max(abs(analysis['1']-analysis['2']))/R
def create_circuit(genome, config): libraries_path = '/home/alan/ngspice/libraries' # os.path.join(os.path.dirname(os.path.dirname(__file__)), 'libraries') spice_library = SpiceLibrary(libraries_path) circuit = Circuit('NEAT') circuit.include(spice_library['1N4148']) Vbase = circuit.V('base', 'input1', circuit.gnd, 2) Vcc = circuit.V('cc', 'input2', circuit.gnd, 5) Vgnd = circuit.V('gnd', 'input3', circuit.gnd, 0) #circuit.R('test1', 'node0', circuit.gnd, 1e6) #circuit.R('test2', 'node0', 'input1', 1e6) ridx = 1 xidx = 1 for key, c in iteritems(genome.connections): if c.component == 'resistor': pin0, pin1 = get_pins(key) R = 10**c.value circuit.R(ridx, pin1, pin0, R) ridx += 1 elif c.component == 'diode': pin0, pin1 = get_pins(key) circuit.X(xidx, '1N4148', pin1, pin0) xidx += 1 return circuit
def test_spinit(self): from PySpice.Spice.Netlist import Circuit import PySpice.Unit as U circuit = Circuit('Astable Multivibrator') source = circuit.V('cc', 'vcc', circuit.gnd, 15 @ U.u_V) circuit.R(1, 'output', 'comparator', 1 @ U.u_kΩ) circuit.C(1, 'comparator', circuit.gnd, 100 @ U.u_nF) circuit.R(2, 'output', 'reference', 100 @ U.u_kΩ) circuit.R(3, 'vcc', 'reference', 100 @ U.u_kΩ) circuit.R(4, 'reference', circuit.gnd, 100 @ U.u_kΩ) circuit.NonLinearVoltageSource(1, 'output', circuit.gnd, expression='V(reference, comparator)', table=((-U.micro(1), 0), (U.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.u_us, end_time=500 @ U.u_us) if (len(analysis.output)) < 500: raise NameError('Simualtion failed')
def freq_resp(): shutil.copyfile('PA13.LIB', '/tmp/PA13.LIB') shutil.copyfile('op27.cir', '/tmp/op27.cir') circuit = Circuit('Freq Response') circuit.include('/tmp/PA13.LIB') circuit.include('/tmp/op27.cir') circuit.subcircuit(PA13Amplifier(Z_1, Z_2)) circuit.subcircuit(OP27Amplifier(R_4, C_4)) # V_Ir input circuit.SinusoidalVoltageSource('input', 'vr', circuit.gnd, amplitude=0.05) circuit.R('r3', 'vir', 'vir2', Z_3) # Current controller stage circuit.X('curr', 'op27_amplifier', 'vir2', 'vr') # Voltage stage circuit.X('volt', 'pa13_amplifier', 'vr', 'vo') # Motor stage circuit.R('rm', 'vo', 'vm1', R_m) circuit.L('lm', 'vm1', 'vio', L_m) circuit.R('rs', 'vio', circuit.gnd, R_s) circuit.R('r5', 'vio', 'vir2', Z_5) simulator = circuit.simulator() # Force ngspice to have shorter time steps near sharp transitions simulator.options(trtol=0.0001) import pdb pdb.set_trace() analysis = simulator.ac( start_frequency=50e0, stop_frequency=5 * f_h, number_of_points=1000, # Lab manual suggests 20, might as well do more variation='dec') return analysis
def create_test_circuit(fet_type, iparam, fet_L, fet_W, coner_path): c = Circuit('gm_id') c.include( '/home/tclarke/skywater-pdk/libraries/sky130_fd_pr/latest/models/corners/tt.spice' ) fet_L = 0.15 fet_W = 1 # create the circuit c.V('gg', 1, c.gnd, 0 @ u_V) c.V('dd', 2, c.gnd, 1.8 @ u_V) c.X('M1', fet_type, 2, 1, c.gnd, c.gnd, L=fet_L, W=fet_W, ad="'W*0.29'", pd="'2*(W+0.29)'", as_="'W*0.29'", ps="'2*(W+0.29)'", nrd="'0.29/W'", nrs="'0.29/W'", sa=0, sb=0, sd=0, nf=1, mult=1) return c
def test_spinit(self): from PySpice.Spice.Netlist import Circuit import PySpice.Unit as U circuit = Circuit('Test') # Fixme: On Windows # Supplies reduced to 2.5749% Supplies reduced to 1.7100% Warning: source stepping failed # doAnalyses: Too many iterations without convergence source = circuit.V('cc', 'vcc', circuit.gnd, 15 @ U.u_V) circuit.R(1, 'output', 'comparator', 1 @ U.u_kΩ) circuit.C(1, 'comparator', circuit.gnd, 100 @ U.u_nF) circuit.R(2, 'output', 'reference', 100 @ U.u_kΩ) circuit.R(3, 'vcc', 'reference', 100 @ U.u_kΩ) circuit.R(4, 'reference', circuit.gnd, 100 @ U.u_kΩ) # circuit.NonLinearVoltageSource(1, 'output', circuit.gnd, # expression='V(reference, comparator)', # table=((-U.micro(1), 0), # (U.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.u_us, end_time=500 @ U.u_us) if (len(analysis.output)) < 500: raise NameError('Simualtion failed')
def simulate_attenuation_factor_core(w, R_1, R_2, C_1, C_2, optboolean=False): circuit = Circuit('Name me please') circuit.include(spice_library['D1N4148']) # TLV3201 is a 0-5 T.I. OpAmp circuit.include(spice_library['LM741']) V = 7 #w = 20E3 #circuit.V('1', circuit.gnd,1,f'DC 0 AC {V} SIN(0 {V} {w})') circuit.V('1', 1, circuit.gnd, f'DC 0 AC {V} SIN(0 {V} {w})') #R_1 = 11.2 #R_2 = 11.2 R_A = 100000 R_B = 0.001 #C_1 = 2000 #C_2 = 1000 links = [ (1, 2), (2, 3), (circuit.gnd, 4), (4, 5), ] R_vector = [ R_1, R_2, R_A, R_B, ] for x in range(len(R_vector)): circuit.R(str(x + 1), links[x][0], links[x][1], R_vector[x] @ u_kΩ) circuit.C('1', 2, 5, C_1 @ u_pF) circuit.C('2', circuit.gnd, 3, C_2 @ u_pF) circuit.X('opamp', 'LM741', 3, 4, 'Vcc', 'Vee', 5) circuit.V('2', 'Vcc', circuit.gnd, 'DC +15') circuit.V('3', 'Vee', circuit.gnd, 'DC -15') if optboolean: circuit.X('diodus', 'D1N4148', 2, 1) f = w simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=((1 / f) / 10) @ u_s, end_time=(4 / f) @ u_s) # Printer? if False: #print(str(circuit)) fig = plt.figure(figsize=(20, 4)) # create a figure object ax = fig.add_subplot(1, 1, 1) plt.plot(analysis['1'] - analysis['2'], label='R') plt.plot(analysis['2'] - analysis['3'], label='L') ax.plot(analysis['3'], label='C') #ax.set_ylim(-int(V*1.1)-10,int(V*1.1)+10) ax.legend() ax.set_title(f'freq : {w}') print(f'resonance was at {np.sqrt(1/(L*C))}') if True: outputter = max(analysis['5']) del (circuit) return outputter return
def test_subcircuit(self): circuit = Circuit('') circuit.include('.../mosdriver.lib') circuit.X('test', 'mosdriver', '0', '1', '2', '3', '4', '5') circuit.BehavioralSource('test', '1', '0', voltage_expression='if(0, 0, 1)', smoothbsrc=1) print(circuit)
def instantiate_circuit(self): ''' class method that instantiates a circuit model from an inherited netlist ''' self.circuit = Circuit(self.circuitname) for line in self.netlist[1:]: try: self.add_circuit_element_from_netlist_line(line) except: print(traceback.format_exc())
def test(self): self._test_spice_declaration( PieceWiseLinearVoltageSource( Circuit(''), 'pwl1', '1', '0', values=[(0, 0), (10@u_ms, 0), (11@u_ms, 5@u_V), (20@u_ms, 5@u_V)], ), 'Vpwl1 1 0 PWL(0s 0V 10ms 0V 11ms 5V 20ms 5V r=0s td=0.0s)', )
def test(self): self._test_spice_declaration( PieceWiseLinearVoltageSource( Circuit(''), 'pwl1', '1', '0', values=[(0, 0), (10 @ u_ms, 0), (11 @ u_ms, 5 @ u_V), (20 @ u_ms, 5 @ u_V)], ), 'Vpwl1 1 0 PWL(0s 0V 10ms 0V 11ms 5V 20ms 5V)', ) self._test_spice_declaration( PieceWiseLinearVoltageSource( Circuit(''), 'pwl1', '1', '0', values=[(0, 0), (10 @ u_ms, 0), (11 @ u_ms, 5 @ u_V), (20 @ u_ms, 5 @ u_V)], repeat_time=12 @ u_ms, delay_time=34 @ u_ms, ), 'Vpwl1 1 0 PWL(0s 0V 10ms 0V 11ms 5V 20ms 5V r=12ms td=34ms)', ) self._test_spice_declaration( PieceWiseLinearVoltageSource( Circuit(''), 'pwl1', '1', '0', values=[(0, 0), (10 @ u_ms, 0), (11 @ u_ms, 5 @ u_V), (20 @ u_ms, 5 @ u_V)], repeat_time=12 @ u_ms, delay_time=34 @ u_ms, dc=50 @ u_V, ), 'Vpwl1 1 0 DC 50V PWL(0s 0V 10ms 0V 11ms 5V 20ms 5V r=12ms td=34ms)', )
def init(): logger = Logging.setup_logging() # libraries_path = find_libraries() libraries_path = '/home/anurag/Workspace/DTU/CourseProj/AE/website/DTU-VLAB/dtuvlab/lab/simulations/libraries' print(libraries_path) spice_library = SpiceLibrary(libraries_path) print(spice_library) circuit = Circuit('Diode Characteristic Curve') circuit.include(spice_library['1N4148']) print(spice_library['1N4148']) return circuit
def voltage_divider(v, r1, r2): circuit = Circuit('Voltage Divider') circuit.V('input', 1, circuit.gnd, u_V(float(v))) circuit.R(1, 1, 2, u_kOhm(float(r1))) circuit.R(2, 2, circuit.gnd, u_kOhm(float(r2))) simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.operating_point() output = {} for node in analysis.nodes.values(): output[str(node)] = str(round(float(node), 2)) + "V" return circuit, analysis, output
def simulate_attenuation_factor_core(w, V, R, C): circuit = Circuit('RC low-pass filter') fc = 1 / 2 / 3.14 / (R * 1000) / (C * 1E-9) circuit.V('1', 1, circuit.gnd, f'DC 0 AC {V} SIN(0 {V} {w})') circuit.R('1', 1, 2, R @ u_kΩ) circuit.C('1', 2, circuit.gnd, C @ u_nF) f = w / 2 / np.pi simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=((1 / f) / 10) @ u_s, end_time=(4 / f) @ u_s) if True: outputter = max(analysis['2']) del (circuit) return outputter return
def setup_circuit(kind="biased"): if kind=="biased": circuit = Circuit('Biased Envelope Circuit') circuit.include(spice_library['hsms']) circuit.V('in', 'input', circuit.gnd, 'dc 0 external') # bias portion circuit.C(2, 'input', 1, 10@u_nF) circuit.R(2, 1, 2, 1@u_kOhm) circuit.X('D2', 'hsms', 2, circuit.gnd) circuit.R(3, 2, 'bias', 1@u_kOhm) circuit.V('bias', 'bias', circuit.gnd, 5@u_V) # envelope portion circuit.X('D1', 'hsms', 1, 'output') circuit.C(1, 'output', circuit.gnd, 220@u_pF) circuit.R(1, 'output', circuit.gnd, 50@u_Ohm) return circuit elif kind=="basic": circuit = Circuit('Biased Envelope Circuit') circuit.include(spice_library['hsms']) circuit.V('in', 'input', circuit.gnd, 'dc 0 external') # envelope portion circuit.X('D1', 'hsms', 'input', 'output') circuit.C(1, 'output', circuit.gnd, 220@u_pF) circuit.R(1, 'output', circuit.gnd, 50@u_Ohm) return circuit elif kind=="diode": circuit = Circuit('Diode Output') circuit.include(spice_library['hsms']) circuit.V('in', 'input', circuit.gnd, 'dc 0 external') circuit.X('D1', 'hsms', 'input', 'output') return circuit
def simple_bjt_amp(): circuit = Circuit('test circuit') model_npn = set_model_qbc847b(circuit) n = NodeNames('n1', 'n2', 'n3', 'n4', 'n5') gnd = 0 circuit.R('1', n.n3, n.n2, 2.2e6) circuit.Q('1', n.n3, n.n2, gnd, model=model_npn) circuit.R('3', n.n1, n.n3, 1e3) circuit.C('1', n.n4, n.n2, 100e-9) circuit.C('2', n.n3, n.n5, 1e-6) circuit.C('4', n.n1, n.n3, 10e-9) circuit.R('5', n.n5, gnd, 10e3) circuit.V('pwr', n.n1, gnd, 6) circuit.V('in', n.n4, gnd, 'dc 0 ac 1 distof1 1 distof2 0.1') return circuit, n
def make_database_core(w=2000,V=12,R=10,L=3,C=320): threshold = 4 circuit = Circuit('RLC-series') circuit.V('1',0,1, f'DC 0 AC {V} SIN(0 {V} {w})') circuit.R('1', 1, 2,R@u_kΩ) circuit.L('1', 2, 3,L@u_H) circuit.X('diodus','D1N4148', 2, 3) circuit.include(spice_library['D1N4148']) circuit.C('1', 3, 0,C@u_nF) dt = 2*np.pi/w*4 tau = 2*np.pi/w*4 simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=dt@u_ms, end_time=tau@u_s) auxiliar = analysis['2']-analysis['3'] return [w,V,R,L,C,int(float(max(auxiliar))>threshold)]
def test_raw_spice(self): spice_declaration = """ .title Voltage Divider R2 out 0 1kOhm vinput in 0 10v r1 in out 9kohm """ # .end circuit = Circuit('Voltage Divider') circuit.V('input', 'in', circuit.gnd, '10V') circuit.R(1, 'in', 'out', raw_spice='9kOhm') circuit.raw_spice += 'R2 out 0 1kOhm' self._test_spice_declaration(circuit, spice_declaration)
def createCircuit(filter1o, filter2o): circuit = Circuit('Filter') circuit.include('Models/BasicOpamp.cir') circuit.include('Models/AD8619.cir') circuit.include('Models/TL084.cir') circuit.subcircuit(filter1o) circuit.subcircuit(filter2o) circuit.V('1', '5V', circuit.gnd, '5') circuit.V('2', 'VRef', circuit.gnd, '2.5') circuit.SinusoidalVoltageSource('In', 'In', 'VRef', amplitude=1) circuit.X('1', filter1o.name, 'In', 'out1o', 'VRef', '5V', circuit.gnd) circuit.X('2', filter2o.name, 'In', 'out2o', 'VRef', '5V', circuit.gnd) print(circuit) return circuit
def current_divider(i, r1, r2): circuit = Circuit('Current Divider') circuit.I('input', 1, circuit.gnd, u_A(float(i))) # Fixme: current value circuit.R(1, 1, circuit.gnd, u_kOhm(float(r1))) circuit.R(2, 1, circuit.gnd, u_kOhm(float(r2))) for resistance in (circuit.R1, circuit.R2): resistance.minus.add_current_probe(circuit) # to get positive value simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.operating_point() output = {} for node in analysis.branches.values(): output[str(node)] = str(round(float(node), 2)) + "A" return circuit, analysis, output
def full_wave_rectifier(v, r, c, f): circuit = Circuit('Full-wave rectification') circuit.include('./app/circuits/libraries/diode/switching/1N4148.lib') source = circuit.SinusoidalVoltageSource('input', 'in', circuit.gnd, amplitude=u_V(float(v)), frequency=u_Hz(float(f))) circuit.X('D1', '1N4148', 'in', 'output_plus') circuit.R('load', 'output_plus', 'output_minus', u_Ω(float(r))) circuit.X('D2', '1N4148', 'output_minus', circuit.gnd) circuit.X('D3', '1N4148', circuit.gnd, 'output_plus') circuit.X('D4', '1N4148', 'output_minus', 'in') simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=source.period / 200, end_time=source.period * 2) plt.close('all') figure, (ax3, ax4) = plt.subplots(2, figsize=(20, 10)) ax3.set_title('Full-Wave Rectification') ax3.set_xlabel('Time [s]') ax3.set_ylabel('Voltage [V]') ax3.grid() ax3.plot(analysis['in']) ax3.plot(analysis.output_plus - analysis.output_minus) ax3.legend(('input', 'output'), loc=(.05, .1)) ax3.set_ylim(float(-source.amplitude * 1.1), float(source.amplitude * 1.1)) circuit.C('1', 'output_plus', 'output_minus', u_mF(float(c))) simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=source.period / 200, end_time=source.period * 2) ax4.set_title('Full-Wave Rectification with filtering') ax4.set_xlabel('Time [s]') ax4.set_ylabel('Voltage [V]') ax4.grid() ax4.plot(analysis['in']) ax4.plot(analysis.output_plus - analysis.output_minus) ax4.legend(('input', 'output'), loc=(.05, .1)) ax4.set_ylim(float(-source.amplitude * 1.1), float(source.amplitude * 1.1)) plt.tight_layout() return circuit, analysis, plt
def make_database_core(w, V, R_1, R_2, C_1, C_2, ax=False): circuit = Circuit('Sallen-key low-pass-filter') circuit.include(spice_library['D1N4148']) circuit.include(spice_library['LM741']) circuit.V('1', 1, circuit.gnd, f'DC 0 AC {V} SIN(0 {V} {w})') R_A = 100000 R_B = 0.001 links = [ (1, 2), (2, 3), (circuit.gnd, 4), (4, 5), ] R_vector = [ R_1, R_2, R_A, R_B, ] for x in range(len(R_vector)): circuit.R(str(x + 1), links[x][0], links[x][1], R_vector[x] @ u_kΩ) circuit.C('1', 2, 5, C_1 @ u_pF) circuit.C('2', circuit.gnd, 3, C_2 @ u_pF) circuit.X('opamp', 'LM741', 3, 4, 'Vcc', 'Vee', 5) circuit.V('2', 'Vcc', circuit.gnd, 'DC +15') circuit.V('3', 'Vee', circuit.gnd, 'DC -15') circuit.X('diodus', 'D1N4148', 2, 1) f = w tf = 3 / w t0 = 1 treshold = 4 simulator = circuit.simulator(temperature=25, nominal_temperature=25) analysis = simulator.transient(step_time=((1 / f) / 10) @ u_s, end_time=3 / w @ u_s) if False: ax.plot(analysis['5'], label='output') ax.plot(analysis['1'], label='input') ax.plot(analysis['1'] - analysis['2'], label='diodo') ax.hlines(4, 0, 5 / w) ax.legend() ax.set_title( f'R1: {R_1}, R2: {R_2}, C1: {C_1}, C2: {C_2}, V: {V}, W: {w}') ax.set_ylim(-15, 15) auxiliar = analysis['2'] - analysis['1'] del (circuit) return [w, V, R_1, R_2, C_1, C_2, int(float(max(auxiliar)) > treshold)]
def simulate_amplification_factor_core(R1,R2,RC,RE,RL,C1,C2,V,w): circuit = Circuit('Amplifier') 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, 'inp', 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) circuit.V('power', 5, circuit.gnd, 15@u_V) circuit.V('var','inp',circuit.gnd, f'DC 0 AC {V} SIN(0 {V}V {w})') T = 25 simulator = circuit.simulator(temperature=T, nominal_temperature=T) analysis = simulator.transient(step_time = (2*np.pi/w/20)@u_s,end_time=(2*np.pi/w*4)@u_s) return [float(min(analysis['out']))]
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