Ultra sensitive RF relay (CB22291E)

This circuit is an improvement of the previous circuit. An input resistor must be included depending on the strength of the signals.

Binary Divider (CB6609E)
This circuit was obtained from a 1967 General Electric documentation. The circuit makes use of...
TTL Astable 7401 (CB19417E)
This configuration uses the 4 gates of a 7401 integrated circuit. The capacitors determine the...
60 Hz Rejector Filter (CB13588E)
This filter can be used to eliminate hum in sound equipment. Operational amplifiers can be 741 and...