Found in a 90s Silicon Chip documentation this circuit is intended to protect a speaker system in case of amplifier failures.
Equivalents of the same series as the LM239 and LM339 can be used in this application. The pulse...
This is the circuit of a commercial flash from the 60’s. We found it in a march 1961 Radio...
The purpose of this project is to monitor remote loads. The windings are made in a burnt...