def PULSEV(self, channel, initial_value, pulsed_value, pulse_width, period,
delay_time):
frequency = (1 / u(period)) @ u_Hz
offset = (pulsed_value / 2) + initial_value
amplitude = pulsed_value
duty_cycle = (u(pulse_width) / u(period)) * 100
self.set_channel(channel, 'pulse', amplitude, frequency, offset,
duty_cycle)
def willMount(self, color='green'):
"""
V_min -- Minimal voltage that could be applied
"""
self.Power = u(self['I_load']) @ u_A
self.V_j = u(self['V_drop']) @ u_V
self.consumption(self.V_j)
self.Z = (self.V_j * self.V_j) / self.P
self.load(self.V - self.V_j)
def willMount(self, f_3db=500e3 @ u_Hz):
"""
f_3db -- Frequencies of interest are passed by the highpass filter
C_in -- Blocking capacitor is chosen so that all frequencies of interest are passed by the highpass filter `C_(i\\n) >= 1 / (2 pi f_(3db) (R_s∥R_g))`
"""
self.V_split = self.V / 6
self.load(self.V)
self.I_b = self.I_load
self.R_out = (u(self.V_split) / u(self.I_b) * 100) @ u_Ohm
def willMount(self, R_in = 0 @ u_Ohm, R_out = 0 @ u_Ohm):
"""
R_in -- The input voltage and upper resistance might represent the output of an amplifier
R_out -- The lower resistance might represent the input of the following stage
"""
self.load(self.V)
# Find right values
A = np.array([[u(self.V_out), u(self.V_out - self.V) ], [1, 1]])
B = np.array([[0], [u(self.V / self.I_load)]]) # + (1 * params_tolerance)))]])
X = np.linalg.inv(A) @ B
self.R_in = X[0][0] @ u_Ohm - self.R_in
self.R_out = X[1][0] @ u_Ohm - self.R_out
def set_channel(self,
channel,
waveform='sine',
amplitude=5 @ u_V,
frequency=100 @ u_Hz,
offset=0 @ u_V,
duty_cycle=50):
print(channel, waveform, frequency, amplitude, offset, duty_cycle)
channel = int(channel)
self.device.setfrequency(channel, u(frequency))
self.device.setwaveform(channel, waveform)
self.device.setamplitude(channel, u(amplitude))
self.device.setoffset(channel, u(offset))
self.device.setdutycycle(channel, duty_cycle)
def EXPV(self,
channel,
initial_value=0 @ u_V,
pulsed_value=5 @ u_V,
rise_delay_time=0 @ u_s,
rise_time_constant=0.1 @ u_s,
fall_delay_time=0.1 @ u_s,
fall_time_constant=0.1 @ u_s):
period = u(rise_time_constant) + u(fall_time_constant)
frequency = (1 / period) @ u_Hz
offset = initial_value
amplitude = pulsed_value
duty_cycle = (u(rise_time_constant) / period) * 100
self.set_channel(channel, 'exp-rize', amplitude, frequency, offset,
duty_cycle)
def set_channel(self,
channel,
waveform='V',
value=0 @ u_V,
current=0 @ u_A):
""" 200 ms time for channel setting """
channel = self.device.channels[0]
channel.voltage = u(value)
self.device.output.on()
def circuit(self):
period = 1 / self.Frequency
quant = period / 4
rate = self.V / quant
self.tau = u(self.V / rate)
current_sensing = Resistor()(self.R_load * 2)
differetiator = Capacitor()((self.tau / current_sensing.value) @ u_F)
self.input & self.v_ref & differetiator & self.output & current_sensing & self.gnd
def circuit(self):
period = 1 / self.Frequency
quant = period / 4
rate = self.V / quant
self.tau = u(self.V / rate)
discharger = Resistor()(self.R_load / 10)
integrator = Capacitor()((self.tau / discharger.value) @ u_F)
self.input & self.v_ref & discharger & self.output & integrator & self.gnd
def circuit(self):
c = speed_of_light * (1 @ u_m) / (1 @ u_s)
frequency = self.frequency #self.input.signal.frequency
self.wave_length = c / frequency
self.normalized_length = u(self.length / self.wave_length)
self.element = self.part(impedance=self.Z, frequency=frequency, normalized_length=self.normalized_length)
# ip, op -- positive line in Spice Transmmittion element
self.input & (self.element['ip'] or self.element[1])
self.output & (self.element['op'] or self.element[2])
# in, on -- negative line, used for ground
if self.element['in']:
self.gnd += self.element['in', 'on']
def circuit(self):
R = Resistor()
self.R_c = self.V / 2 / self.I_quiescent
self.R_e = self.R_load
self.R_out = (0 @ u_V - self.V_inv) / (self.I_quiescent * 2)
self.r_e = 0.026 @ u_V / self.I_quiescent
self.G_diff = u(self.R_c / (2 * (self.r_e + self.R_e)))
self.G_cm = u(-1 * self.R_c / (2 * self.R_out + self.R_e + self.r_e))
self.CMMR = u(self.R_out / (self.R_e + self.r_e))
amplifier = Bipolar(type='npn', common='emitter', follow='collector')
# First amplifier INVERTING
left = amplifier(
collector=R(self.R_c),
emitter=R(self.R_e) # Emitter resistore conected to bipolar
)
right = amplifier(collector=R(self.R_c), emitter=R(self.R_e))
power = self.v_ref & left.v_ref & right.v_ref
left_input = self.input & left & self.output_n
right_input = self.input_n & right & self.output
sink = left.gnd & right.gnd & R(self.R_out) & self.v_inv
def circuit(self, **kwargs):
generator = Bipolar(type='npn', follow='emitter')()
self.V_e = generator.V_je + randint(1, int(u(self.V) / 2)) @ u_V
self.V_b = self.V_e + generator.V_je
self.R_e = self.V_e / self.I_load
generator.collector += self.output_n
controller = Divider(type='resistive')(V=self.V,
V_out=self.V_b,
Load=self.I_load)
controller.input += self.v_ref
controller.gnd += self.gnd
source = controller.output & generator & Resistor()(
self.R_e) & self.gnd
def willMount(self):
"""
I_load -- That current puts the collector at `V_(ref)`
V_je -- Base-emitter built-in potential
V_e -- `V_e = 1V` selected for temperature stability and maximum voltage swing
V_c -- `V_c = V_(ref) / 2`
R_c -- `R_c = (V_(ref) - V_c) / I_(load)`
R_in -- `1/R_(i\\n) = 1/R_s + 1/R_g + 1 / R_(i\\n(base))`
R_e -- `R_e = V_e / I_(load)`
R_in_base_dc -- `R_(i\\n(base),dc) = beta * R_e`
R_in_base_ac -- `R_(i\\n(base),ac) = beta * (r_e + R_(load))`
G_v -- Amplifier gain `G_v = v_(out) / v_(i\\n) = - g_m * R_c = -R_c/R_e`
g_m -- The inverse of resistance is called conductance. An amplifier whose gain has units of conductance is called a transconductance amplifier. `g_m = i_(out)/v_(i\\n) = - G_v / R_c `
r_e -- Transresistance `r_e = V_T / I_e = ((kT) / q) / I_e = (0.0253 V) / I_e`
"""
self.props['follow'] = 'collector'
self.props['common'] = 'emitter'
self.V_c = self.V / 2
self.R_c = (self.V - self.V_c) / self.I_load
self.V_e = 1.0 @ u_V # For temperature stability
self.R_e = self.V_e / self.I_load
# TODO: Make it temperature dependent
self.r_e = 0.026 @ u_V / self.I_load
self.G_v = -1 * u(self.R_c / (self.R_e + self.r_e))
self.R_3 = (-1 * self.R_c - self.r_e * self.G_v) / self.G_v
self.g_m = self.G_v / self.R_c * -1
self.R_in_base_dc = self.Beta * self.R_e
self.R_in_base_ac = self.Beta * (self.r_e + self.R_3)
self.Power = (self.V_c - self.V_e) * self.I_load
self.consumption(self.V_c)
def LoadLineQPoint(self, args, temperature=[25] @ u_Degree):
"""
The Q-point can be found by plotting the graph of the load line on the i-v characteristic for the diode. The intersection of the two curves represents the quiescent operating point, or Q-point, for the diode.
"""
voltage_sweep = slice(0, self.block.V, .1)
data = self.characteristics(args, temperature, voltage_sweep)
data[0]['Load_Line'] = u(self.block.I_load)
data[len(data) - 1]['Load_Line'] = 0
return {
'x': {
'field': 'V_input',
'label': 'Volt',
'unit': 'V'
},
'y': {
'label': 'Current',
'unit': 'A',
'scale': 'sqrt',
'domain': [-1e-3, 1e-3]
},
'data': data
}