C128 PSU Tester - Commodore 128 Power Supply Tester, Measures Voltages, Currents, Ripple, OLED Digital Display

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.

Features

• 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.

C128 PSU Tester - Quick Start

C128 PSU Tester - Declaration of Conformity