Using the integrated circuit 723 we found this power supply in an article in the magazine Radio Electronics from August 1971. The transistor may be a BD136 equipped with a heat sink.
This memory flip-flop must be powered by 5V voltage. The circuit stores 1 bit. ...
Originally designed for use in an FM receiver, this 1990 circuit can be adapted for other types of...
This circuit, found in ancient US documentation, allows you to switch the antenna from the...