The circuit shown is from the 1977 GE semiconductor manual. More modern equivalent SCRs can be used. R1 must be wire type.
This circuit consists of a 10 + 10 V symmetrical source that operates from a single 5V input. It is...
This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are...
In this project, from a Japanese magazine of 1973, only one channel of a stereo amplifier of 20 W...