Voltage Doubler
About the Voltage Doubler PCB
Voltage Doubler is an open source PCB design by ibrahimjarallah, published on GitHub. It is a 2-layer board measuring 36 × 23 mm, with 11 components from 7 distinct parts.
Other key parts include the NE555D. By type, the board carries 4 capacitors, 2 connectors, 2 diodes, 2 resistors and 1 IC.
From the project
NE555-based voltage doubler PCB — designed in KiCad 9.0. Includes schematic, PCB layout, Gerbers, BOM, and 3D renders.
The NE555 is configured in astable (free-running) mode, generating a ~600 Hz square wave set by:
- R1 (10kΩ) and R2 (33kΩ) — timing resistors - C1/C2 (10nF) — timing capacitors
This switching signal drives a Villard cascade charge pump:
1. On the rising edge, C3 (22µF) charges through D1 (1N4007) 2. On the falling edge, C4 (22µF) charges to the sum of Vin + Vc3 through D2 (1N4007) 3. Result: output voltage ≈ 2 × Vin − 2 × Vf ≈ 8.6V (where Vf ≈ 0.7V per diode)
Main components on the Voltage Doubler
Voltage Doubler bill of materials (BOM)
11 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NE555D | SO-8_3.9x4.9mm_P1.27mm | U1 |
| 2 | Conn_1x2 | PinHeader_1x02_P1.00mm_Horizontal | J1, J2 |
| 2 | 1N4007 | D_5W_P10.16mm_Horizontal | D1, D2 |
| 2 | 0.01uF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2 |
| 2 | 22uF | C_Radial_D4.0mm_H5.0mm_P1.50mm | C3, C4 |
| 1 | 10k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 33k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2 |
Voltage Doubler design files
The KiCad project lives in the ibrahimjarallah/Voltage_Doubler repository on GitHub; these links point at the commit this page was built from.
- LayoutVoltage_Doubler.kicad_pcb
- SchematicVoltage_Doubler.kicad_sch
Voltage Doubler: common questions
How big is the Voltage Doubler PCB?
The Voltage Doubler measures 36 × 23 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Voltage Doubler?
11 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Voltage Doubler design files?
From the ibrahimjarallah/Voltage_Doubler repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Voltage Doubler design in my own project?
The repository has no license, so all rights stay with ibrahimjarallah. Use it as a reference, and ask the author before reusing the design.