This circuit is from a 1975 Miniwatts magazine, therefore using Philips components from that time, now difficult to find. The circuit directly controls a heating element via a Triac.
Found in an Electronics World of 1966 this circuit is intended for use with a microphone as an...
This is a very simple configuration of NAND or NO-AND function with two general-purpose...
We found this simple operating tester 741 in a European publication in 1991. The circuit...