Their benefits are such that it’s become surprisingly rare to see a traditional linear power supply with a mains-frequency transformer and rectifier circuit, so [ElectroBoy]’s dual voltage PSU ...

It’s a small linear motor which [ligonapProduktion] built after seeing a very brief description of a commercially available version. The video after the break shows him testing the motor.

"This is our most refined linear switch to date, and it’s made for the people who helped inspire it," says Joakim Jansson, head of product management at Cherry in the company's press release.