Memory Recorder (CB6786E)

This Harris circuit from the 90's is intended for recording old EPROM memories. The circuit uses components of the time.

Phono amplifier (CB23747E)
This audio amplifier circuit was found in Radio Electronics magazine from June 1966. The circuit is a...
Light Alarm with the 741 (CB12591E)
The sensor for this alarm is an LDR and it consists of an oscillator that goes into action when...
Two Tone TTL Siren (CB15627E)
The TTL circuit we present is for recreational purposes, but that does not mean that it cannot serve...