This circuit of power supply, is very
simple and easy to built, it can be assembled on a general-purpose PCB,
finding its materials is very easy and cost-small. The output voltage
is stabilized and is regulated in the region from 0V until + 15V dc,
with biggest provided current 1 A. The regulation becomes with the P1.
The Q1 is classic power transistor and it needs to be placed on a cool
rib (Heatsink), when it works continuously in the region of biggest
current it gets hot. The type of transformer is standard in the market.
Stabilized Regulated Power Supply Circuit Diagram
Parts:
P1 = 330R-Potentiometer
R1 = 560R-2W
C1 = 2200uF-35V
C2 = 100uF-35V
C3 = 10uF-25V
C4 = 220uF-25V
C5 = 100nF-63V
D1 = 18V-1.5W Zener
Q1 = 2N3055 NPN Transistor
T1 = 220VAC – 18V@ 1.5A
BR1 = 4x1N4007 Diode Bridge
SW1 = Mains On-Off Switch
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