How to build Power Supply 0-15V / 1A

August 4, 2010 - category: DC power supply


This circuit of power supply, are very simple in the manufacture, the finding of his materials , is very easy and cost, small. The output voltage is stabilised and is regulated in the region from 0V until + 15V dc, with biggest provided current 1 A. The regulation becomes with the R2. The Q1 of is classic power transistor and it needs it is placed in heatsink, one and heating when it works continuously in the region of biggest current. The type of transformer is standard in the market.

Circuit diagram

Circuit diagram

Parts list

  • R1= 56ohm 2W
  • R2= 330ohm Lin. pot
  • C1= 2200uF 35V
  • C2= 100uF 35V
  • C3= 10uF 25V
  • C4= 220uF 25V
  • C5= 100nF 100V
  • GR1= 4 X 1N4007
  • Q1= 2N3055
  • T1=220V@18V 1.5A
  • D1= 18V 1.5W zener

circuit from http://users.otenet.gr/~athsam/power_supply_0_15v_1a.htm

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