adjustable power supply

1 year ago

Using TL494 PWM controller

Sheet_1

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ADJUSTABLE POWER SUPPLY PCB

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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