Indicated for automotive use, this circuit was found in a Popular Electronics from the 90s. The circuit uses a power transistor that must be equipped with a heatsink.
This stabilized power supply was found in the 1974 Ferranti transistor manual. The power...
This circuit provides 2.5 W of power with 6 V supply and 4-ohm speaker. We found it in the Radio...
We found this circuit in a Radio Shack documentation from 1977. The circuit serves for a link of...