This power source was found in a 1968 Electronics World. The transistors are from that time. The current of each output is limited by the transformer.
s. In it, a set of batteries or battery provides the reference voltage for the output. The...
This circuit converts BCD inputs to analog voltages. The operational amplifier must be powered...
This circuit is from a 1992 documentation, but the components used can still be easily assembled. The...