We found this 4.5 MHz amplifier for video signals from old analog TVs in the June 1992 issue of Radio Electronics magazine. It uses a 592 integrated circuit.
A high level on the input of this circuit causes the trim voltage adjusted output voltage to drop to 1.2...
We found this alarm in a 1992 documentation. The circuit has several timings and the relay can...
This windshield wiper interval switch was found in the April 1990 issue of Radio Electronics...