This static switch or triac contactor was obtained from Philips 1969 documentation. The SCR is from the era, but modern equivalents depending on the load can be used.
Found on an 80's Radio Electronics, this two-section circuit is designed to pass the frequency...
We found this circuit in an article in Electronics Now magazine from March 1996. The frequency is limited...
This circuit was found in a French publication in 1981, but it can still be assembled with only...