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Enhanced Voltage Blaster
Enhanced Voltage Blaster
A (slightly) enhanced version of the original Voltage Blaster by PhilsComputerLab and Necroware.
Enhancements:
- Diodes protect regulator from reverse polarity and reverse bias. Prevents soundcard-frying over voltage.
- Four LEDs show presence of the four main power rails on the ISA bus.
- Dual copper heatsink pads embedded into PCB design to keep regulator cool.
- Jumper to disable Voltage Blaster without removal. Can be used to verify lack of (-)5V on ISA bus.
The datasheet for the 79xx series negative regulators strongly recommend two protection diodes. PCs get shutdown suddenly and sound cards have lots of capacitance.
Enhanced Voltage Blaster
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
For more important ordering information, please refer to
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Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen(Without Speaker)
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John Hutchison
Dec 18,2025
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Commodore Bench
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