This circuit was obtained from an old American documentation, and practically any general-purpose transistor and sensitive relay can be used according to the supply voltage.
This switching regulator circuit with less than 100 mV ripple was found in a 1980s documentation. The...
The UM3562 integrated circuit is a dedicated circuit found in many toys because it generates three types...
The circuit has the traditional configuration that can be found elsewhere on this site. This is...