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STD uCurrent Clone EEVBlog
License: LGPL
Mode: Editors' pick
- 1
Update time：
2023-11-13 07:54:45
Creation time：
2022-03-27 12:25:10
Description
uCurrent clone orginaly designed by David L. Jones (EEVBlog) knowing under name uCurrent Gold.
I have to use two OPA189ID and one MCP6V51 opamps, so it can be easy powered from 9V battery. With mods (change two TVS) it can surive powering with 30V or more.
Like an orginal there is nearly nothig that can protect this circuit from overvoltage or overcurrent. You should use it with care.
Selected resistors may be a bit expensive, because i want precision and repetability so there is no place for compromise. Ofc you can use your own solutions.
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity | spiceSymbolName | Value | |
|---|---|---|---|---|---|---|---|
| 1 | 0.1uF | C1,C2,C3,C4,C5,C6,C7 | C1206 | 7 | LCEDA_Lib | C_1206_US | |
| 2 | 100pF | C8 | R0603 | 1 | numaxim | 33pf | |
| 3 | 33pF | C9,C10 | R1206 | 2 | numaxim | 33pf | |
| 4 | SMAJ15A-AT | D1,D2 | DO-214AC_L4.3-W2.7-LS5.3-RD | 2 | LCSC | SMAJ15A-AT | |
| 5 | 1812L150/24MR | F1 | F1812 | 1 | LCSC | 1812L150/24MR | |
| 6 | BANANA 4mm | J1,J2,J3,J4 | 4MM PANEL SOCKET S16N-PC BANANA | 4 | kalymnos77 | BANANA 4mm | |
| 7 | HDR-M-2.54_1x3 | J5 | HDR-M-2.54_1X3 | 1 | LCEDA_Lib | HDR-M-2.54_1x3 | |
| 8 | 5-1634503-1 | P1,P2 | 5-1634503-1 | 2 | Penzuk | 5-1634503-1 | https://www.digikey.com/product-detail/en/te-connectivity-amp-connectors/5-1634503-1/A97581-ND/1755969 |
| 9 | 100k 1% | R1,R2 | R1206 | 2 | LCEDA_Lib | R_1206_EU | |
| 10 | 270R | R3 | R1206 | 1 | LCEDA_Lib | R_1206_EU | |
| 11 | 10R | R4 | R0805 | 1 | LCEDA_Lib | R_1206_EU | |
| 12 | 10k | R5,R6 | R0805 | 2 | LCEDA_Lib | R_1206_EU | |
| 13 | 47R | R7,R9 | R1206 | 2 | LCEDA_Lib | R_1206_EU | |
| 14 | 100R | R8,R26 | R1206 | 2 | LCEDA_Lib | R_1206_EU | |
| 15 | 1k1 | R10,R12 | R0805 | 2 | LCEDA_Lib | R_0805_EU | |
| 16 | 11R | R11,R13 | R0805 | 2 | LCEDA_Lib | R_0805_EU | |
| 17 | 47R | R14 | R0603 | 1 | LCEDA_Lib | R_0805_EU | |
| 18 | 100R | R15,R17 | R0805 | 2 | LCEDA_Lib | R_0805_EU | |
| 19 | 1R | R16 | R0805 | 1 | LCEDA_Lib | R_0805_EU | |
| 20 | 10k | R20 | R0805 | 1 | LCEDA_Lib | R_1206_EU | |
| 21 | 0.01R | R22 | R2512 | 1 | LCEDA_Lib | R_1206_EU | |
| 22 | SRBM154002 | SW1,SW2 | SW-TH_SRBM154002 | 2 | LCSC | SRBM154002 | |
| 23 | OPA189ID | U1,U2 | SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL | 2 | LCSC | OPA189ID | |
| 24 | MCP6V51 | U4 | MSOP-8_L3.0-W3.0-P0.65-LS5.0-BL | 1 | Visionz | MCP6V51 |
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