4 layers62.8 × 172 mm
Intensity pi
JQIamo/PI_wt_hold_for_laser_intensity_lock
PI controller with integrator hold control for laser intensity lock.
127 parts1
2 layers140 × 40 mm
Pcb ucurrent
kuon/pcb-ucurrentMy PCB for µcurrent board https://www.eevblog.com/projects/ucurrent/
- Size
- 140 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 21
- Pads
- 99
- Tracks, vias
- 84, 2
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 11 Feb 2019
- Updated
- 5 Nov 2021
Overview
Pcb ucurrent is an open-source printed circuit board by kuon, from the kuon/pcb-ucurrent repository on GitHub. It is a 2-layer board of 140 × 40 mm with 32 parts on 21 nets, routed with 84 tracks and 2 vias.
It is built around the OPA189ID and 71BDF30-02-1-AJN. Its parts include 16 resistors, 5 connectors, 3 capacitors, 1 IC and 1 switch.
Main components
2
OPA189ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 1 1.7mA 140pA 14MHz 168dB 20V/us 3uV 4.5V~36V 5.2nV/√Hz@1kHz 5nV/℃ 65mA 70pA EMI filtering/RF suppression、Zero drift / auto-zero、ESD protection、Reverse-phase input protection Rail-to-rail output SOP-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op Amps71BDF30-02-1-AJN
-Rotary SwitchesGrayhill
README
README.mdµcurrent board
This is my own PCB for the µcurrent board.
It is based on https://www.eevblog.com/projects/ucurrent/.
While the base idea is the same, a few things have been modified:
- There is a rotary switch which can support many different shunt resistor, 12 in the current design.
- The power supply has been modified to use ±15V to give a greater range.
- The amplifier has been modified to match the power supply.
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R10, R12 |
| 1 | 100R | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R14 |
| 1 | 10R | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 150p | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1R | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 200R | Resistor_SMD:R_0805_2012Metric | R16 |
| 1 | 20R | Resistor_SMD:R_0805_2012Metric | R15 |
| 1 | 330R | Resistor_SMD:R_0805_2012Metric | R13 |
| 1 | 500R | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 500m | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 50R | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 5R | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 5k | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | 680R | Resistor_SMD:R_0805_2012Metric | R11 |
| 1 | 71BDF30-02-1 | goyman:71BDF30-02-1 | SW1 |
| 1 | Conn_01x03_Male | Connector_Molex:Molex_Nano-Fit_105313-xx03_1x03_P2.50mm_Horizontal | J5 |
| 1 | IN+ | Connector:CalTest_CT3151 | J1 |
| 1 | IN- | Connector:CalTest_CT3151 | J2 |
| 1 | OPA189ID | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | OUT+ | Connector:CalTest_CT3151 | J3 |
| 1 | OUT- | Connector:CalTest_CT3151 | J4 |
The 26 most common of 32 parts.
Questions
How big is the Pcb ucurrent PCB?
It measures 140 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pcb ucurrent use?
32 parts, built around the OPA189ID and 71BDF30-02-1-AJN. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pcb ucurrent KiCad files?
From the kuon/pcb-ucurrent repository on GitHub, at the commit this page was made from: the board is pcb-ucurrent.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcb ucurrent design in my own project?
Its repository states no licence, so its author keeps all rights: ask kuon before reusing the design.
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