This 1980s circuit was found in Motorola documentation. The circuit uses period components that admit of equivalents. Light feedback in a modern version can be done by optical fiber.
In the figure we show how to use a varicap to modulate a signal in frequency. The circuit can be...
Found in Datel's documentation from the 1980s, this circuit makes use of the company's operational...
This circuit can function as a simple shield converter from BCD to analog outputs. The circuit...