![RetroPower PSU - C64 Power Supply, C128 Power Supply, Commodore Plus/4 Power Supply, Amiga Power Supply, ZX Spectrum Power Supply, Atari Power Supply, Sinclair QL Power Supply, TI-99/4A Power Supply, ColecoVision Power RetroPower PSU - C64 Power Supply, C128 Power Supply, Commodore Plus/4 Power Supply, Amiga Power Supply, ZX Spectrum Power Supply, Atari Power Supply, Sinclair QL Power Supply, TI-99/4A Power Supply, ColecoVision Power](http://retropowerpsu.com/imageset/ti-99_4a_power_supply_digital_00mbleu/ti-99_4a_power_supply_digital_00mbleu_12.jpg)
RetroPower PSU - C64 Power Supply, C128 Power Supply, Commodore Plus/4 Power Supply, Amiga Power Supply, ZX Spectrum Power Supply, Atari Power Supply, Sinclair QL Power Supply, TI-99/4A Power Supply, ColecoVision Power
![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
![C64 FDD Dual PSU OLED Digital Gray AU - Replacement Commodore 64 + FDD 1541-II Power Supply, AU Plug C64 FDD Dual PSU OLED Digital Gray AU - Replacement Commodore 64 + FDD 1541-II Power Supply, AU Plug](https://www.keelog.com/imageset/c64_fdd1541_power_supply_sticker1/c64_fdd1541_power_supply_sticker1_16.jpg)