This circuit is from a 1965 General Electric manual. It uses components from the time that admit equivalents. The SCR can be the TIC106 and the LDR of any type.
A small voltage-boosting transformer is used in this pulse generator circuit found in...
This circuit was found in a 1964 magazine, which no longer exists. It is a small wireless...
This circuit was found in a 1980 documentation. The triac used is of the TIC226D type which in the...