Comment by djmips

I wouldn't put Holt's power supply on the same pedestal as the Woz drive controller which I feel was actually innovative but perhaps what the angle they are looking at is just the apparent dearth of switched mode power supplies in the market for home computers, games etc at that time. If I think back to that time, Atari, Commodore, Radio Shack, TI etc - they all used heavy transformer bricks and linear regulators. I think the BBC microcomputer went to an Astec switch mode supply after a brick on launch and that was in 1982. Maybe it was this rise of Astec that you can somehow attribute to Apple and Rod Holt after a fashion.