This oscillator for frequencies up to a few tens of kilohertz was found in a 1970s documentation. The transistor can be of general use. For the component values used, the frequency is 250 Hz.
This circuit, obtained from a 1989 publication, can control motors up to 1.5 A. With the LM350 this...
This small audio amplifier can be used with microphones and other audio sources. The circuit can...
This circuit is used in communications receivers to silence noise that occurs in poor signal...