The schematic below shows how the +25V DC and -25V DC are obtained. In order to provide power supply for 2 stereo amplifiers, a power transformer rating of 80VA with 240V/36V centre tapped secondary winding is used. The secondary output of the transformer is rectified by using four 1N5401 diodes together with 4 electrolytic capacitors to smoothen the ripple voltage. A fuse and a varistor are connected at the primary input to protect the circuit against power surge.
Read More Source:http://www.electronics-project-design.com/poweramplifier.html
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This entry was posted on Wednesday, March 5th, 2008 at 10:35 pm and is filed under Power supply.
