This high current regulator with low voltage drop was found in the datasheet of the used integrated circuit itself. The transistor accepts an equivalent and must be provided with a heat sink.
This circuit was found in a 90s Wels' Think Tank. The frequency depends on C2 and R3. The handset...
The circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor. The...
This zero-crossing switch circuit triggers an SCR when the input voltage goes through zero. The...