Muting Circuit (CB25267E)

This circuit mutes a system when a phone call is received. The circuit is from a Radio Electronics from December 1990.

| Clique na imagem para ampliar |

Instrumentation Amplifier (CB14090E)
This amplifier with differential input uses two old op amps but can be implemented with modern op amps....
2.5 A Regulated Power Supply (CB24099E)
This power supply was found in the December 1970 issue of Radio Electronics magazine. The...
Temperature transmitter (CB9392E)
This circuit is a wireless temperature transmitter for RF signals in the range of 0.2 to 2 MHz...