OpAmpPassXsistorBenchSupply

cellularmitosis·OpAmpPassXsistorBenchSupply

OpAmpPassXsistorBenchSupply PCB layout, top view — open source board by cellularmitosis

About the OpAmpPassXsistorBenchSupply PCB

OpAmpPassXsistorBenchSupply is an open source PCB design by cellularmitosis, published on GitHub under the MIT license. It is a 2-layer board measuring 99.7 × 99.7 mm, with 87 components from 32 distinct parts.

Other key parts include the TL431, 7805, LM358 and INA193. By type, the board carries 38 resistors, 16 capacitors, 6 inductors, 5 transistors, 4 ICs and 4 connectors.

It belongs with the power & battery designs in this gallery.

From the project

An adjustable voltage and current limited lab power supply, implemented with a traditional op amp and pass transistor architecture.

An adjustable voltage and current limited lab power supply, implemented with a traditional op amp and pass transistor architecture.

This design is currently broken (it oscillates). I haven't had time to revisit it yet.

Main components on the OpAmpPassXsistorBenchSupply

TL431 7805 LM358 INA193

OpAmpPassXsistorBenchSupply bill of materials (BOM)

87 components, 32 distinct parts.

Qty	Part	Footprint	Refs
1	TL431	TO-92_U_059Bo	U1
1	7805	TO-220_V_069B	U2
1	LM358	DIP8_059A	U3
1	INA193	SOT23-5	U4
4	2N3904	TO-92_Q_EBC	Q1, Q2, Q4, Q5
1	TIP120	TO-220_V_069B	Q3
1	2.5x5.5mm	BARREL_JACK_25x55	CON1
1	2.1x5.5mm	BARREL_JACK_21x55	CON2
2	CONN_1	Banana_A	P1, P2
1	AMMETER_V	EBAY_AMMETER	DS1
1	VOLTMETER	DVM036A	DS2
4	HOLE	hole_M3_NPTH	H1, H2, H3, H4
2	1k	3296W	RV1, RV4
2	47k	WXD3-13-2W_A	RV2, RV3
2	SPDT	M2012SS1W01	SW1, SW2
2	LED	LED_3MM_069A	D1, D2
4	FERRITE_BEAD	FERRITE_AXIAL_06_069A	FB1, FB2, FB3, FB4
1	100uH, 100mA	R_AXIAL_0W25_059Bi	L1
1	100uH, 2A	Toroid_V_06_03_069Bi	L2
2	100uF	MedCap	C1, C3

Show 12 more

Qty	Part	Footprint	Refs
4	1uF	BOXCAP_02_03_02_059C	C2, C4, C7, C9
1	10uF	ELCAP_10_20_V_059Bo	C5
2	1000uF	BigCap	C6, C8
7	0.1uF	CERCAP_2_059A	C10, C11, C12, C13, C14, C15, C16
19	1	R_AXIAL_0W25_059Bi	R1, R7, R8, R9, R10, R11, R12, R19 +11
1	4.7k	R_AXIAL_0W25_059Bi	R2
3	47k	R_AXIAL_0W25_059Bi	R3, R31, R32
2	10k	R_AXIAL_0W25_059Bi	R4, R30
2	0	R_AXIAL_0W25_059Bi	R5, R6
8	1k	R_AXIAL_0W25_059Bi	R13, R14, R15, R16, R17, R18, R37, R38
1	68k	R_AXIAL_0W25_059Bi	R29
2	220	R_AXIAL_0W25_059Bi	R35, R36

OpAmpPassXsistorBenchSupply design files

The KiCad project lives in the cellularmitosis/OpAmpPassXsistorBenchSupply repository on GitHub; these links point at the commit this page was built from.

LayoutOpAmpPassXsistorBenchSupply.kicad_pcb

OpAmpPassXsistorBenchSupply: common questions

How big is the OpAmpPassXsistorBenchSupply PCB?

The OpAmpPassXsistorBenchSupply measures 99.7 × 99.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpAmpPassXsistorBenchSupply?

87 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the OpAmpPassXsistorBenchSupply design files?

From the cellularmitosis/OpAmpPassXsistorBenchSupply repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OpAmpPassXsistorBenchSupply design in my own project?

Yes, under the terms of its MIT license, which cellularmitosis chose for the repository.

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