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

kalee20 · 12th Oct 2021, 8:35 pm

It's a good and simple method.

Though, you really need to measure the two voltages at the same time - your '1V' may sag a bit when loaded with a transformer - and also the mains may vary up and down a bit. When faced with something like this, I usually use two meters, take a photo, and then take the readings in the photo.

12th Oct 2021, 8:35 pm	#2
kalee20 Dekatron Join Date: Feb 2007 Location: Lynton, N. Devon, UK. Posts: 7,088	Re: Determining the ratio of transformers It's a good and simple method. Though, you really need to measure the two voltages at the same time - your '1V' may sag a bit when loaded with a transformer - and also the mains may vary up and down a bit. When faced with something like this, I usually use two meters, take a photo, and then take the readings in the photo.