6AC7 Amplifier (T450E)

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

Pulse Triggered Monostable (CB25672E)
This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine....
Ultra low active cycle (CB9078E)
This astable multivibrator has an active cycle of 30,000: 1. We found it in a 1970 EEE. The...
1 MHz XTAL Oscillator (CB226E)
This configuration using a CMOS IC produces a 1 MHz signal. The circuit can be used as clock in...