6AC7 Amplifier (T450E)

Obtained in MIT documentation, this 4-stage circuit has high gain for small signals. The power supply sources 150 V.

Optical Telephony Receiver (CB14698E)
We found this circuit in the Texas Instruments optoelectronics manual. Field effect transistors can be...
Electronic organ CA3130 (CB22002E)
Found in an English publication from 1977 about the CA3130, this circuit uses a probe to play a...
LT1190 Fast Pulse Detector (CB14615E)
This circuit is from 1997 Linear Technology Applications. The circuit uses common components at...