CE amplifier schematic: the input coupling cap CC_in was placed
horizontally (R90) at y=336 — the same y as the RB1-to-base bias
wire. Both cap pins sat on the wire, shorting the cap and allowing
Vin's 0V DC to override the bias divider, putting Q1 in cutoff.
Fix: move CC_in to vertical orientation (R0) above the base wire.
Now pinA=(400,256) and pinB=(400,320) are off the y=336 bias path.
The cap properly blocks DC while passing the 1kHz input signal.
Result: V(out) swings 2.2Vpp (gain ≈ 110) instead of stuck at Vcc.
Colpitts oscillator test: the schematic was actually working (V(out)
pp=2.05V) but the test's fallback variable selection picked V(n001)
(the Vcc rail, constant 12V) instead of V(out). Fix: look for V(out)
first since the schematic labels the collector with "out".
Integration tests: 4/4 pass, unit tests: 360/360 pass.
Ryan Malloy
b16c20c2ca