This is a 40V Regulated Power Supply, built using IC LM317 as regulator and TIP42A as electric current amplifier.
| R1 = 3R9 1 or 2W R2 = 22R R3 = 6K8 R4 = 220R R5 = 4K7 C1 = 3300µF/50V or 4700µF/50V C2,C5 = 100nF C3 = 10µF/63V C4 = 220µF/50V |
D1 = Diode bridge 100V 4A D2 = 1N4002 D3 = LED IC1 = LM317T Q1 = TIP42A SW2 = SPST Mains switch T1 = 230V Primary, 32-36V Secondary |
This power supply is perfect to supply audio power amplifier circuit which amplifying range of 20 to 40 watts and require single power supply. The transformer type is usually center-tapped (CT) transformer, but you may use non CT transformer (if any). The current output of transformer depending on the load, for example if the amplifier is 30W amplifier, then you have to use at least 2A transformer.
Source: redcircuits.com
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