This old configuration of an audio amplifier has a push-pull two-transistor output stage. Output power is low and the critical components are the transformers. The circuit was found in an 1958’s publication.
Often, unauthorized people use the phone to make improper calls. A control for this is achieved with...
This circuit was obtained in an Electronque Loisirs magazine from France, in a July 1991 edition. It...
This circuit sensor is an NTC with a resistance of the order of 2k. The SCR can be from the TIC...