An Arduino drives the switch-mode power supply, offering dimming thanks to PWM, and the ability to automatically switch the light on and off using an RTC chip with a battery backup. The sketch ...

[Guido Socher] built himself a great little bench power supply that’s able to put out 30 Volts at 2 Amps. Instead of taking the easy way out by putting a few taps on an ATX power supply, this ...