ZX Spectrum PSU Tester
Sinclair ZX Spectrum +2A, +2B, +3 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. Round DIN6 plug matching the original Sinclair ZX Spectrum PSU pinout.
Power supply tester for Sinclair ZX Spectrum +2A, +2B, +3
Forces a constant current from the 5V, 12V, and -12V DC 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
Round DIN6 plug with 5V DC, 12V DC, and -12V DC
Check it before it's too late
Power supply failures are among the most common problems among retro Sinclair ZX Spectrum +2A, +2B, +3 systems. An Sinclair ZX Spectrum PSU failure can lead to expensive repairs, or even render the entire system useless. This is specifically why we have designed the Sinclair ZX Spectrum power supply tester. It runs a thorough test, minimizing the risk of damage due to an ageing factory power supply.
Voltage, current, ripple
The Sinclair ZX Spectrum tester measures the primary +5V DC output voltage and ripple at a constant current of roughly 400mA...500mA. Secondary voltages (+12V DC, -12V DC) 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.
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