This power supply for model railroad was found in a February 1961 Radio Electronics Magazine. The transistor must be mounted on a heatsink and the transformer is a 1,5A secondary winding.
This simple circuit, obtained from a Radio Shack documentation, tests transistors and diodes. The...
This simple circuit is intended to test integrated circuits 555 and 741 in 8-pin DIL enclosures. In both...
This is a circuit for receiving signals from the previous transmitter. The circuit uses a common...