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.
This circuit mutes a system when a phone call is received. The circuit is from a Radio Electronics from...
The circuit shown is from the National Semiconductor's Linear Applications Handbook. The CI is not...
This circuit was found in a Texas Instruments optoelectronics manual and can work with any...