This is a circuit that allows remote activation of a power supply. The circuit was used with a timer of the time. It appeared in the November 1973 issue of Radio Electronics magazine.
The transmitter shown can reach around 100 meters depending on the location and sensitivity of the...
This circuit was obtained from a 1978 Practical Wireless. It generates a low frequency, low...
Using the LM170 integrated circuit, this circuit was found in the May 1970 Radio Electronics...