![C64 PSU, C64 Power Supply, Commodore 64 PSU, Commodore 64 Power Supply, Commodore 128, 1541, 1571, 1581, Amiga 500, Atari, ZX Spectrum C64 PSU, C64 Power Supply, Commodore 64 PSU, Commodore 64 Power Supply, Commodore 128, 1541, 1571, 1581, Amiga 500, Atari, ZX Spectrum](https://www.keelog.com/imageset/c64_power_supply_20mgr/c64_power_supply_20mgr_14.jpg)
C64 PSU, C64 Power Supply, Commodore 64 PSU, Commodore 64 Power Supply, Commodore 128, 1541, 1571, 1581, Amiga 500, Atari, ZX Spectrum
![voltage - Using a LED as indicator for 9VAC and "borrowing" a 5V-ground does not work. Why? - Electrical Engineering Stack Exchange voltage - Using a LED as indicator for 9VAC and "borrowing" a 5V-ground does not work. Why? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/9HdwA.png)
voltage - Using a LED as indicator for 9VAC and "borrowing" a 5V-ground does not work. Why? - Electrical Engineering Stack Exchange
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