This is the power supply for the amplifier in the previous circuit. The voltage regulators must be equipped with a heat sink and the transformer is high current.
This circuit for conventional lines was obtained in a 1996 documentation. The circuit uses common...
This power supply may have 5, 6, 9 or 12 V outputs depending on the 78XX and 79XX series...
This TTL circuit was found in an American documentation from the 80s. The components are common in the...