adjustable power supply

1 year ago

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Description

Using TL494 PWM controller

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ADJUSTABLE POWER SUPPLY PCB

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BOM

ID Name Designator Footprint Quantity
1 TL494CN U1 DIP-16 1
2 BD140 Q1 TO-126 1
3 BD139 Q2 TO-126 1
4 MBR30100CTP D1 TO-220AB 1
5 IRF4905PBF Q3,Q4 TO-220(TO-220-3) 2
6 10K R1 AXIAL-0.4 1
7 2.2nF C1 RAD-0.2 1
8 6K8 R2,R13 AXIAL-0.4 2
9 4K7 R3 AXIAL-0.4 1
10 220R R4,R6 AXIAL-0.4 2
11 1k R5,R8 AXIAL-0.4 2
12 0R025 R9 AXIAL-0.8 1
13 4R7 R10,R11 AXIAL-0.4 2
14 270R R12 AXIAL-0.4 1
15 680R R7 AXIAL-0.4 1
16 IN12-30V DC P1 HDR-1X1/2.54 1
17 GND P2 HDR-1X1/2.54 1
18 + OUTPUT P3 HDR-1X1/2.54 1
19 - OUTPUT P4 HDR-1X1/2.54 1
20 POT FOOTPRINT OF 3PIN HEADER U2,U3 POT 2.54 FOOTPRINT 2
21 inductor 4 wire L2 INDUCTOR FOR ADJUSTABLE 1
22 1u C2,C3,C4,C6 CAP-D10.0XF5.0 4
23 1u C5 CAP-D6.3XF2.5 1

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