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Chad Ross

UNITED STATES OF AMERICA • + Follow Edit Project

Commodore Bench

UNITED STATES OF AMERICA
- 3
- 3
1

Components

	MC79M05CDTRKG onsemi	x 1
	SLR-56VRT32 Rohm Semiconductor	x 4
	ED1V100MP20511U Chinsan (Elite)	x 2
	LR1F330R TE Connectivity Passive Product	x 2
	ROX3SJ1K0 TE Connectivity Passive Product	x 2
	SB140 SMC Diode Solutions	x 2

Tools, APP Software Used etc.

KiCad 8.0

Description

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.

Download Gerbers

Apr 06,2025

353 views

Enhanced Voltage Blaster

A (slightly) enhanced version of the original Voltage Blaster by PhilsComputerLab and Necroware.

353

1

1

Published: Apr 06,2025

Standard PCB

Download Gerber file 3

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Copyright Info

Attribution-ShareAlike (CC BY-SA) License

Under the Attribution-ShareAlike (CC BY-SA) License.

PCB
Rigid-Flex
Assembly
SMD-Stencil
CNC
Sheet metal
3D Printing
Injection Molding

ESP32-S3 1.47inch LCD display Development Board Type B

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ESP32-S3 4.3inch Capacitive Touch Display Development Board, 800×480, 5-point Touch

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MHP50-B5 Mini Hot Plate Preheater

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Smart Soldering Iron TS101-BC2

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Commodore Bench Jun 13,2025

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