Line injector
About the Line injector PCB
Line injector is an open source PCB design by PatrickBaus, published on GitHub under the CERN-OHL-W-2.0 license. It is a 2-layer board measuring 120 × 100 mm, with 19 components from 11 distinct parts.
By type, the board carries 7 connectors, 6 capacitors, 4 resistors and 1 transistor.
It belongs with the power & battery and test & measurement designs in this gallery.
From the project
A line injector for PSRR measurements.
Key Features: Bandwidth (-3 dB): 6 Hz - 35 MHz (into 50 Ω) Passband transfer function is about 0.95 V/V (@ 5V) and 0.975 V/V (@ 15V) Maximum input voltage: 50 V Maximum current: 5 A * Remote sensing inputs to compensate for the voltage drop over the MOSFET
Additionally, a report from the Bode 100 VNA used to characterize the injector can be found here.
Photos of the finished design ------------------------------
Line injector bill of materials (BOM)
19 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AOT2618L AOT2618 | TO-220-3_Vertical | Q1 |
| 3 | SWEB 8094 AU / RT Conn_01x01_Female | Banana_Cliff_FCR7350R_S16N-PC_Horizontal | J1, J3, J4 |
| 3 | SWEB 8094 AU / SW Conn_01x01_Female | Banana_Cliff_FCR7350B_S16N-PC_Horizontal | J2, J5, J6 |
| 1 | 5227161-7 Conn_Coaxial | BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J7 |
| 1 | RA-T2X-38E Heatsink | Heatsink_42x25mm_2xFixation_Ohmite-R-series | HS1 |
| 2 | UPW2A102MHD 1m | CP_Radial_D18.0mm_P7.50mm | C1, C3 |
| 1 | CNA6P1X7R2A475K250AE 4.7u | C_1210_3225Metric | C2 |
| 2 | CGA5L2X7R2A105M160AE 1u | C_1206_3216Metric | C4, C6 |
| 1 | EGXF351ELL330MJ35S 33u | CP_Radial_D10.0mm_P5.00mm | C5 |
| 1 | AC0805FR-0710KL 10k | R_0805_2012Metric | R1 |
| 3 | AC1206FR-0749R9L 49.9R | R_1206_3216Metric | R2, R3, R4 |
Line injector design files
The KiCad project lives in the PatrickBaus/line_injector repository on GitHub; these links point at the commit this page was built from.
- Layoutline_injector.kicad_pcb
- Schematicline_injector.kicad_sch
Line injector: common questions
How big is the Line injector PCB?
The Line injector measures 120 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Line injector?
19 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Line injector design files?
From the PatrickBaus/line_injector repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Line injector design in my own project?
Yes, under the terms of its CERN-OHL-W-2.0 license, which PatrickBaus chose for the repository.
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