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

G6Tanuki · 31st Aug 2017, 3:38 pm

My most-recent upcockage was when wiring the voltage-selector switch to the primary of a mains transformer.

One of the type that has 0 230 250V tappings.

Of course I managed to wire it 'backwards' so on the "230V" setting instead of the mains being applied between 0 and 230V it was applied between the 230V and 250V taps.

Bang!

The transformer survived, but the secondary-side rectifier-diodes and fuse didn't.

31st Aug 2017, 3:38 pm	#8
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,996	Re: The perils of homebrewing equipment My most-recent upcockage was when wiring the voltage-selector switch to the primary of a mains transformer. One of the type that has 0 230 250V tappings. Of course I managed to wire it 'backwards' so on the "230V" setting instead of the mains being applied between 0 and 230V it was applied between the 230V and 250V taps. Bang! The transformer survived, but the secondary-side rectifier-diodes and fuse didn't.