C128 PSU Tester
Commodore 128 power supply unit (PSU) automated tester. Forces a constant current from the power supply and measures voltage levels and ripple. Results are displayed in real time on a digital OLED display. The tester features an aluminum heat sink to perform long-term tests. Square DIN5 plug matching the original C128 PSU pinout.
Power supply tester for Commodore 128
Forces a constant current from the 5V DC and 9V AC PSU outputs
Measures voltages, currents, and ripple
Results displayed in real-time on digital OLED display
Heat sink for dissipating power during long-term tests
Plug and play easy usage, no setup required
Square DIN5 plug with 5V DC and 9V AC
Check it before it's too late
Power supply failures are among the most common problems among retro Commodore 64/128 systems. A C128 PSU failure can lead to expensive repairs, or even render the entire system useless. This is specifically why we have designed the C128 power supply tester. It runs a thorough test, minimizing the risk of damage due to an ageing factory power supply.
Voltage, current, ripple
The C128 PSU tester measures the primary +5V DC output voltage and ripple at a constant current of roughly 400mA...500mA. Secondary voltages (9V AC) are measured at a lower current, typically 50...150mA. Measurement results are updated on a digital OLED display in real-time, allowing a live evaluation of the power quality.
Long-term testing
The power supply tester has an aluminum heat-sink allowing to dissipate excessive power and perform long-term testing. It's designed to work both as a quick diagnostic tool, and for long-term stability tests.
Documents
Images
