This circuit was found in a 90s Electronic Design. The circuit directly controls a triac that is loaded with a heating element. The triac depends on the power on the load.
Suggested by Harris in documentation from the 80s, this circuit uses components from that time. It...
This circuit produces low power flashes in a LED. Frequency is adjusted by P1 and depends also on...
This configuration is from a 1964 US documentation valid for any FET. The range of power voltages...