We found this circuit in the June 1987 issue of Radio Electronics magazine. With it, it is possible to receive signals from the bands determined by the crystals in a common medium wave receiver.
We found this conventional flasher by activating a relay in a 1987 documentation. The circuit...
The circuit was suggested by Analog Devices (www.analog.com) in its Application Note AN-411 and...
This circuit works in the opposite form to the previous one and drives a relay as a load. The...