When you hear about a switching power supply, you think of a system that uses an inductor and a switch to redistribute energy from the input to the output. But the original switching power supply was the vibrator supply, which was common in automotive applications back in the middle part of the last century. [Mr. Carlson] has a 1950s-era example of one of these, and he invites us to watch him repair it in the video below.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/04/08/1950s-switching-power-supply-does-it-mechanically/