Direct Output Coupling Amplifier (CB6202E)

This power step drains just 3.5 mA from the battery and can provide good playback on a 4-ohm speaker. The circuit is from an 80's documentation.

| Clique na imagem para ampliar |

Telephone Call Indicator (CB17398E)
This circuit, found in 2002 documentation, triggers LEDs when a phone call is received. The LEDs...
XR2206 Function Generator (CB24506E)
This simple version of a function generator with the XR2206 was found in the May 1977 issue of...
Shield Timed Horn (CB18976E)
A pulse triggers this 800 Hz horn for a time determined by capacitor C1. Powered by 5 V the...