2 layers150 × 135 mm
Smart Parking System
chdsolinap/ece-projects
ECE hardware and electronics projects — PCB design, circuit prototypes, and embedded systems built at PLM.
54 parts
2 layers52.2 × 60 mm
Preamplifier
chdsolinap/ece-projectsECE hardware and electronics projects — PCB design, circuit prototypes, and embedded systems built at PLM.
- Size
- 52.2 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 11
- Pads
- 38
- Tracks, vias
- 874, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 May 2026
- Updated
- 13 Jun 2026
Overview
Preamplifier is an open-source printed circuit board by chdsolinap, from the chdsolinap/ece-projects repository on GitHub. It is a 2-layer board of 52.2 × 60 mm with 18 parts on 11 nets, routed with 874 tracks and 0 vias.
It is built around the BC547. Its parts include 7 resistors, 6 capacitors, 3 connectors and 2 transistors.
Main components
1README
README.mdHardware and electronics projects from my ECE coursework at PLM.
Covers PCB fabrication, analog circuit design, combinational logic,
and embedded systems — built and tested as functional prototypes.
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 220k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R5 |
| 2 | 4.7uF | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C2, C4 |
| 2 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 100pF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C3 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C5 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 12V | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J3 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C1 |
| 1 | 2.2uF | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C6 |
| 1 | 390k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 680 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | Audio Output | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J2 |
| 1 | Mic Input | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J1 |
Questions
How big is the Preamplifier PCB?
It measures 52.2 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Preamplifier use?
18 parts, built around the BC547. 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 Preamplifier KiCad files?
From the chdsolinap/ece-projects repository on GitHub, at the commit this page was made from: the board is Public Address System (Audio Amplifier)/Preamplifier/Preamplifier.kicad_pcb and its schematic 4-bit Full Adder/4_bit_full_adder_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Preamplifier design in my own project?
Its repository states no licence, so its author keeps all rights: ask chdsolinap before reusing the design.
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