Micro-DMM
oihdesigns
A small, open hardware DMM
Components (22)
| Reference | Value | Description |
|---|---|---|
| Q1,Q2 | AO3400A MOSFET | 4.2A Id, 20V Vds, N-Channel MOSFET, SOT-23 |
| U1 | LM4060 - 1.25V | |
| U3 | TL431DBZ | Shunt Regulator, SOT-23 |
| BZ1 | Buzzer | Buzzer, polarized |
| C1 | 0.1uF | Unpolarized capacitor |
| D1,D2 | D_Schottky | Schottky diode |
| J1,J2,J5 | Conn_01x01 | Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3,J6 | Conn_01x07_Pin | Generic connector, single row, 01x07, script generated |
| J4 | Battery | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J8 | Conn_01x03_Pin | Generic connector, single row, 01x03, script generated |
| JP1 | Pin2_High | Jumper, 2-pole, small symbol, bridged |
| JP2 | Pin2_Gnd | Jumper, 2-pole, small symbol, open |
| R1,R2,R23 | 4.7K | Resistor, US symbol |
| R3 | 200K | Resistor, US symbol |
| R4 | 75K | Resistor, US symbol |
| R5,R17 | 56K | Resistor, US symbol |
| R6-R15 | 100K | Resistor, US symbol |
| R16 | 100 | Resistor, US symbol |
| R18 | 22 | Resistor, US symbol |
| R19-R21 | 499K | Resistor, US symbol |
| R22 | 1Meg | Resistor, US symbol |
| SW1 | SW_DIP_x04 | 4x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol |