This is the typical circuit of a local oscillator for a superheterodyne FM receiver. The circuit was found in a 1980s documentation and is typical of early and early receivers.
This 100 kHz crystal controlled oscillator was found in an American 1980s documentation. The...
Only two transistors are used in this preamp for low-sensitive transducers, such as guitar and...
Found in Popular Electronics this circuit uses current components to control a pump in order to...