2 layers132.1 × 45.7 mm
IPoS
peterheinrich/InternetOverSpaghetti
Transmitting IP packages over a pair of spaghetti thus demonstrating how media independent IP really is.
42 parts342
2 layers82.3 × 42.7 mm
Opamp follower test
Erhannis/TestOpampFollowerTest circuit, opamp with an emitter follower
- Size
- 82.3 × 42.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 11
- Pads
- 39
- Tracks, vias
- 84, 3
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.99 (file 20250513)
- Created
- 7 Jun 2025
- Updated
- 7 Jun 2025
Overview
Opamp follower test is an open-source printed circuit board by Erhannis, from the Erhannis/TestOpampFollower repository on GitHub. It is a 2-layer board of 82.3 × 42.7 mm with 14 parts on 11 nets, routed with 84 tracks and 3 vias.
It is built around the LM358. Its parts include 6 resistors, 3 connectors, 2 capacitors, 2 transistors and 1 IC.
Main components
1Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R4, R5, R6 |
| 3 | Conn_01x03_Pin | Connector_JST:JST_NV_B03P-NV_1x03_P5.00mm_Vertical | J1, J2, J3 |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 1 | 30k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 40k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | LM358 | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | TIP142T_C480191 | easyeda2kicad:TO-220-3_L10.1-W4.4-P2.54_IRF640NPBF | Q1 |
| 1 | TIP147T_C480193 | easyeda2kicad:TO-220-3_L10.0-W4.5-P2.54-L | Q2 |
Questions
How big is the Opamp follower test PCB?
It measures 82.3 × 42.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Opamp follower test use?
14 parts, built around the LM358. 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 Opamp follower test KiCad files?
From the Erhannis/TestOpampFollower repository on GitHub, at the commit this page was made from: the board is opamp_follower_test.kicad_pcb and its schematic opamp_follower_test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Opamp follower test design in my own project?
Its repository states no licence, so its author keeps all rights: ask Erhannis before reusing the design.
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