This small switched regulator was found in an 60’s Optical Electronics. The circuit uses an integrated from the time, which is difficult to obtain today.
This audio amplifier circuit was found in Radio Electronics magazine from June 1966. The circuit is a...
The sensor for this alarm is an LDR and it consists of an oscillator that goes into action when...
The TTL circuit we present is for recreational purposes, but that does not mean that it cannot serve...