This circuit was found in a Ferranti documentation from 1969. The transistors are common types of the company at the time. Smaller equivalents may be used. The output power is of the order of 150 mW.
This small locator transmitter was found in old Radio Shack documentation. The transistor could be a...
This circuit changes the actuation curve of a 47k or 50k linear potentiometer so that it becomes...
This circuit is based on documentation from the operational's own manufacturer, from the 80's. The same...