Dual Power Supply with Soft Power Switch

Dual Power Supply with Soft Power Switch
This power supply circuit brings together a dual polarity power supply and soft power to a power transformer (to supply a large amplifier for example) on the same board. The regulator circuit is performed by a pair of 79xx and 78XX (XX = 12 to 24), if the current requirement does not exceed 200 mA, the heatsink is not needed here (but available in the printed circuit board). Tthis circuit part provides power to devices such as amplifiers (preamplifier,