This circuit is from an old American amateur radio manual. The circuit shows how to use a Varicap on a high power frequency doubler circuit.
This two-transistor output stage source currents up to 100 mA to a load using the 2N3906, but can...
This simple standing waveform (ROE or SWR) meter is used to adjust antenna matching with...
This circuit is based on the Linear Technology LT1495 and was found in a 2005 manual. The circuit...