This circuit was found in an old Hewlett Packard publication. Its purpose is to activate neon indicator lamps with signals from a switching circuit.
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...