This is a precision ±15V regulator on a single side PCB. The circuit is based on EB-802 with design by zerosoft on www.headphoneamp.co.kr . I have replaced some components that easy to find in the market and design a new PCB that look like symmetry layout. But, you can replace the components with high quality component if you can find.
Prototype the top layer of PCB I use as ground plane only and unnecessary becuase all importance PCB route is the bottom only.
Adjust VR1 and VR2 to achieve the desired voltage output (±15V at CON2).
Schematic
PCB
Components
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D1-D4
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1N5822
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C1-C4, C13, C14, C19, C20
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0.1uF/63V flim capacitor
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C11, C12
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220uF/16V
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C15, C16
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47uF/35V
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C5-C10
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2200uF/25V or 35V Electrolytic capacitor
(C7 and C10 may be 1000uF/25V) |
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L1 and L2
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100uH
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Q1
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IRF640 N-channel MOSFET
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Q2
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IRF9640 P-channel MOSFET
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IC1 and IC2
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NE5534 OP-Amp
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D9 and D10
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LM326-5.0 Voltage reference or LM329DZ/6.9V
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Ttransformer
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15-0-15 V, 2A
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All resistors are Vishey/Dale RN-55
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