Second part
About the Second part PCB
Second part is an open source PCB design by bchethan24, published on GitHub under the MIT license. It is a 2-layer board measuring 98 × 91.1 mm, with 11 components from 8 distinct parts.
Other key parts include the 4047. By type, the board carries 3 connectors, 3 resistors, 2 transistors, 1 IC and 1 capacitor.
It belongs with the power & battery designs in this gallery.
From the project
A fully custom-built Solar Powered Electric Fence Circuit designed by ECE project team. The system uses a solar panel to charge a 12V battery via an LM317L regulator and generates controlled high-voltage pulses using a CD4047 astable multivibrator (f = 46–58 Hz). IRF3205 MOSFETs drive a step-up transformer to deliver electric pulses along the fence
A high-voltage, renewable energy-based perimeter security system using CD4047 pulse generation and MOSFET power switching.
This project features a fully custom-built Solar Powered Electric Fence, designed to deliver controlled, safe high-voltage pulses for agricultural and perimeter protection. It integrates a solar charging system with a battery backup to ensure 24/7 off-grid operation without reliance on the power grid.
Main components on the Second part
Second part bill of materials (BOM)
11 components, 8 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4047 | DIP-14_W7.62mm_Socket_LongPads | U2 |
| 2 | IRF3205 | TO-220-3_Vertical | Q1, Q2 |
| 2 | Conn_01x02 | PhoenixContact_GMSTBA_2,5_2-G-7,62_1x02_P7.62mm_Horizontal | J1, J2 |
| 1 | to gnd | PhoenixContact_MSTBA_2,5_2-G-5,08_1x02_P5.08mm_Horizontal | J3 |
| 1 | 100k | Potentiometer_Bourns_3386W_Horizontal | RV1 |
| 1 | 10n | C_Axial_L3.8mm_D2.6mm_P7.50mm_Horizontal | C6 |
| 1 | 390k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 2 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11, R12 |
Second part design files
The KiCad project lives in the bchethan24/Solar-Power-Electric-Fence-Circuit-Design repository on GitHub; these links point at the commit this page was built from.
Second part: common questions
How big is the Second part PCB?
The Second part measures 98 × 91.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Second part?
11 components, from 8 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Second part design files?
From the bchethan24/Solar-Power-Electric-Fence-Circuit-Design repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Second part design in my own project?
Yes, under the terms of its MIT license, which bchethan24 chose for the repository.
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