This circuit for frequencies up to a few tens of megahertz was found in the April 1978 issue of Radio Electronics magazine. The power supply must be symmetrical.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
Found in a Popular Electronics from the 9s, this circuit has output for RS-232 interfaces and current...
Photodiodes can be used to sense moving objects, such as optical switches and encoders. In the...