Variable Power Supply

Ongoing

STD Variable Power Supply

License: Public Domain

Mode:

Editors' pick

Update time： 2020-08-24 00:33:20

Creation time： 2020-07-28 16:49:15

Description

1.25Vdc-28Vdc - Variable current power supplyup to 5 amps 5Vdc Fixed variable current power supply up to 3 amps Function Generator Option for either linear power supply or switch mode supply.

Design Drawing

schematic diagram

（ 1 / ）

Outputs
Open in Editor
Power
Open in Editor
Function Generator
Open in Editor

PCB

（ 1 / ）

PCB_2020-08-17_10-03-03
Open in Editor

The preview image was not generated, please save it again in the editor.

BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	LM338T	U2,U4,U5	TO-220-3_L10.0-W4.5-P2.54-L	3
2	10uF	C5,C2,C7,C10,C38	CAP-SMD_BD6.3-L6.6-W6.6-FD	5
3	Green CV	LED2_PM,LED2	HDR-F-2.54_1X2	2
4	Red CC	LED1_PM,LED1	HDR-F-2.54_1X2	2
5	Voltmeter	H6,H3	HDR-F-2.54_1X2	2
6	Ammeter	H5,H1	HDR-F-2.54_1X2	2
7	Adj_1_Out	H4	HDR-F-2.54_1X2	1
8	USB	H9	HDR-F-2.54_1X2	1
9	5V_Out	H2	HDR-F-2.54_1X2	1
10	100uH	L1,L2	IND-SMD_L12.5-W12.5	2
11	0.1	R12,R11	R2512	2
12	K2-3.6×6.1_SMD	SW1_PM,SW2_PM	POWER CONNECTOR	2
13	0.25	R1,R6,R3	RES-SMD_L6.4-W3.2	3
14	LM2576R-5.0	U1,U8	TO-263-5_L10.6-W9.6-P1.70-LS15.9-TL	2
15	TLC-USMD200	F1	F1210	1
16	0ohm	R13,R4	R0805	2
17	5ohm	R14	R0805	1
18	330	R15	R0805	1
19	1N5822	D2,D4	DO-201AD_BD5.3-L8.4-P12.50-D1.4-FD	2
20	1000uF	C1	CAP-SMD_BD8.0-L8.3-W8.3-FD	1
21	4.7K	R24,R21,R9,R8	R0805	4
22	5	R5	R1206	1
23	20K	R19	R0805	1
24	100uF	C4,C13,C15,C16	CAP-SMD_BD10.0-L10.3-W10.3-FD	4
25	1N4007G	D3,D8	DO-41_BD2.4-L4.7-P8.70-D0.9-RD	2
26	1N4007G_C402211	D1,D9,D7,D6	DO-41_BD2.4-L4.7-P8.70-D0.9-RD	4
27	10K	R20,R7,R29,R38,R36,R37,R34,R35	R0805	8
28	1K	R16,R17,R22,R30	R0805	4
29	5ohm	R3_PM,R2	RES-ADJ-TH_3296W	2
30	10k	R18	RES-ADJ-TH_3296W	1
31	50	R1_PM,R2_PM	RES-ADJ-TH_3296W	2
32	1K	R23	RES-ADJ-TH_3296W	1
33	22K	R10,R25	R0805	2
34	TL082IDT	U6,U3	SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL	2
35	100nF	C8,C3,C6,C11,C22,C19,C18,C23,C34,C32,C33,C39,C37,C42,C40,C41	C0805	16
36	10uF	C31,C28	C1210	2
37	1SMA4739A	D5	SMA_L4.4-W2.8-LS5.4-R-RD	1
38	KA7805ERTF	U11	TO-252-2_L6.6-W6.1-P4.57-LS9.9-BR-CW	1
39	HDR-F-2.54_1x2	H7	HDR-F-2.54_1X2	1
40	SOLDERJUMPER-OLDNC	SJ3	SJ_2S	1
41	47uF	C12	C1206	1
42	10000uF	C29,C26	CAP-TH_BD30.0-P10.00-D2.3-FD	2
43	GND	TP2	TEST-TH_BD3.18-P1.93	1
44	V_GND	TP4	TEST-TH_BD3.18-P1.93	1
45	-12V	TP6	TEST-TH_BD3.18-P1.93	1
46	+5V	TP7	TEST-TH_BD3.18-P1.93	1
47	VCC	TP1	TEST-TH_BD3.18-P1.93	1
48	+12V	TP5	TEST-TH_BD3.18-P1.93	1
49	+24V	TP3	TEST-TH_BD3.18-P1.93	1
50	LM7824	U7	TO-252-2_L6.6-W6.1-P4.58-BR	1
51	LM7812	U10	TO-252-2_L6.6-W6.1-P4.58-BR	1
52	22uF	C20,C21	CAP-SMD_BD6.3-L6.6-W6.6-FD	2
53	33K	R27,R28	R0805	2
54	33uF	C24	CAP-SMD_BD8.0-L8.3-W8.3-FD	1
55	Transformer	H10	TRANSFORMER INPUT	1
56	1uF	C25	CAP-SMD_BD4.0-L4.3-W4.3-FD	1
57	VD6-24D12E3	U9	PWRM-TH_VD6-XXDXXE3	1
58	100K	R26	R2512	1
59	1000uF	C14	CAP-SMD_BD16.0-L17.0-W17.0-FD	1
60	30V 10A Resetable	F2	FUSE-TH_L14.0-W3.1-P10.50-D0.8-S2.00	1
61	LM7912	U12	TO-252-2_L6.6-W6.1-P4.58-BR	1
62	1000uF	C30,C27	CAP-SMD_BD16.0-L17.0-W17.0-RD	2
63	330nF	C9	C0805	1
64	IRF9Z14SPBF	Q1	TO-263-2_L10.0-W9.1-P5.08-LS15.2-BR	1
65	SOLDERJUMPER_2WAYW	SJ4	SJ_2W	1
66	SK-12D02-VG5	SW1	HDR-F-2.54_1X3	1
67	LM318MX/NOPB	U17	SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL	1
68	Binding Post	H8	HDR-F-2.54_1X2	1
69	LED-0805_R	LED3	LED0805-FD	1
70	Extra IO	J2	HDR-M-2.54_2X3	1
71	24MHz	TP8	TEST-TH_BD3.18-P1.93	1
72	9833_Out	TP9	TEST-TH_BD3.18-P1.93	1
73	Cry Osc	X2	OSC-SMD_4P-L5.0-W3.2-BL_SG5032	1
74	AD9833BRMZ	U15	MSOP-10_L3.0-W3.0-P0.50-LS5.0-BL	1
75	128X32_OLED	U16	OLED_128X32	1
76	ATMEGA328P-PU	U18	DIP-28_L34.6-W7.3-P2.54-LS10.2-BL	1
77	5 Way Switch	U19	5 WAY ROTORY SWITCH	1
78	16MHz	X1	HC-49S_L11.4-W4.8	1
79	ICSP	U13	ICSP	1
80	1K	RP2	POTENTIOMETER_TRIMMER_ACP_CA6H_VERTICAL	1
81	50K	RP1	POTENTIOMETER_TRIMMER_ACP_CA6H_VERTICAL	1
82	1.3K	R32,R33,R31	R0805	3
83	EC11_Rotary_Encoder	EN1	ROTORY ENCODER	1
84	22pF	C36,C35	C0805	2
85	BNC	J1	2PIN-HEADER	1
86	ATMEGA328P-AU	U14	TQFP-32_L7.0-W7.0-P0.80-LS9.0-BL	1