UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

M0FYA Andy · 11th Feb 2018, 10:47 am

In my view the transformer in the doghouse PSU was probably designed to operate at 60Hz, with no 'meat on the bone'. As a result they at best run hot and often frizzle.
I recall reading somewhere that at Bletchley Park the operators would put the PSU on the floor and warm their feet on it!
Andy

11th Feb 2018, 10:47 am	#5
M0FYA Andy Nonode Join Date: May 2007 Location: Preston, Lancashire, UK. Posts: 2,511	Re: National HRO PSU. Capacitor values. In my view the transformer in the doghouse PSU was probably designed to operate at 60Hz, with no 'meat on the bone'. As a result they at best run hot and often frizzle. I recall reading somewhere that at Bletchley Park the operators would put the PSU on the floor and warm their feet on it! Andy