Inductor,
Label,
Source,
Wire,
midpoint,
shift,
shift_y,
)
from inform import Error, error, os_error
try:
with Schematic(filename="oscillator.svg", background='none', line_width=2):
# resonator
vdd = Label(loc='n', nudge=10, name=r'$V_{\rm dd}$')
Wire([vdd.C, shift_y(vdd.C, 25)])
ll = Inductor(p=shift(vdd.C, -125, 25),
orient='v',
name=r'$\frac{1}{2} L$')
lr = Inductor(p=shift(vdd.C, 125, 25),
orient='v|',
name=r'$\frac{1}{2} L$')
c = Capacitor(C=midpoint(ll.n, lr.n), orient='h', name='$C$')
Wire([ll.p, lr.p])
Wire([ll.n, c.p])
Wire([lr.n, c.n])
# gain stage
ml = MOS(d=ll.n, yoff=75, orient='|')
mr = MOS(d=lr.n, yoff=75, orient='')
Wire([ll.n, ml.d])
from svg_schematic import (
Schematic, Capacitor, Ground, Inductor, Resistor, Pin, Source, Wire
)
from inform import Error, error, os_error
try:
with Schematic(
filename = 'mfed.svg',
background = 'none',
):
vin = Source(name='Vin', value='1 V', kind='sine')
Ground(C=vin.n)
rs = Resistor(name='Rs', value='50 Ω', n=vin.p, xoff=25)
Wire([vin.p, rs.n])
c1 = Capacitor(name='C1', value='864 pF', p=rs.p, xoff=25)
Ground(C=c1.n)
l2 = Inductor(name='L2', value='5.12 μH', n=c1.p, xoff=25)
Wire([rs.p, l2.n])
c3 = Capacitor(name='C3', value='2.83 nF', p=l2.p, xoff=25)
Ground(C=c3.n)
l4 = Inductor(name='L4', value='8.78 μH', n=c3.p, xoff=25)
Wire([l2.p, l4.n])
c5 = Capacitor(name='C5', value='7.28 nF', p=l4.p, xoff=25)
Ground(C=c5.n)
rl = Resistor(name='Rl', value='50 Ω', p=c5.p, xoff=100, orient='v')
Ground(C=rl.n)
out = Pin(name='out', C=rl.p, xoff=50, w=2)
Wire([l4.p, out.t])
except Error as e:
e.report()
except OSError as e:
# transistor version
mp = MOS(kind='p')
mn = MOS(N=mp.S, kind='n')
vin = Pin(C=midpoint(mp.g, mn.g),
xoff=-50,
kind='in',
name=r'$V_{\rm in}$',
w=2)
vout = Pin(C=midpoint(mp.d, mn.d),
xoff=50,
kind='out',
name=r'$V_{\rm out}$',
w=2)
Label(C=mp.s, loc='n', name=r'$V_{\rm dd}$')
Ground(C=mn.s)
Wire([vin.t, mp.g], kind='-|')
Wire([vin.t, mn.g], kind='-|')
Wire([vout.t, mp.d], kind='-|')
Wire([vout.t, mn.d], kind='-|')
# gate version
inv = Gate(N=mn.S, yoff=25, kind='inv')
vin = Pin(t=inv.i, xoff=-25, kind='in', name=r'$V_{\rm in}$', w=2)
vout = Pin(t=inv.o, xoff=25, kind='out', name=r'$V_{\rm out}$', w=2)
Wire([inv.o, vout.t])
Wire([inv.i, vin.t])
except Error as e:
e.report()
except OSError as e:
error(os_error(e))
#!/usr/bin/env python3
from svg_schematic import Schematic, Amp, Box, Label, Pin, Source, Wire, shift_x
from inform import Error, error, os_error
try:
with Schematic(
filename = "feedback.svg",
font_size=16,
font_family='serif'
):
summer = Source(kind='sum')
amp = Amp(W=summer.E, xoff=25, name='$a$', kind='se')
fb = Box(C=amp.C, yoff=100, name='$f$', h=1, orient='|')
Label(C=summer.W, name='$+$', loc='nw')
Label(C=summer.S, name='$-$', loc='sw')
i = Pin(C=summer.W, xoff=-50, name='in', kind='in')
o = Pin(C=amp.E, xoff=50, name='out', kind='out')
Wire([i.C, summer.W])
Wire([summer.E, amp.i])
Wire([amp.E, o.C])
Wire([shift_x(amp.E, 25), fb.i], kind='|-')
Wire([summer.S, fb.W], kind='|-')
except Error as e:
e.report()
except OSError as e:
error(os_error(e))
