This power supply was found in a RCA publication from the 1970s. The circuit uses transistors from that time. Modern equivalent transistors can be used.
This circuit was found in a 2005 Linear Technology manual. The circuit monitors 12 V batteries in...
This circuit of a few tens of milliwatts of power requires a single source. We found it in a Radio...
The circuit in the figure is a current regulator with adjustment in the range of 0 to 3 amps. The...