Gain 10 Voltage Amplifier (T456E)

This 4-stage circuit has a voltage gain of 10 and negative feedback. The circuit was found in an old MIT publication.

Triggered CMOS Astable 4001 or 4011 (CB10730E)
Although it is a common configuration today, these circuits were taken from an old publication. The...
Wireless Spy (CB5014E)
I found this circuit on a December 1976 Radio Elettronica. The Italian magazine no longer exists, but...
Wien Bridge Oscillator (CB4922E)
This circuit uses an operational that is not currently common. We found it in an old American...