Simple Transformer Ratio Analyser

[Yorkie]

Thanks for reading and for your encouraging comments Alan and Ed - I'll add some pics when it's finished (assuming that it works!). As to indicating the starts and finishes of the windings are connected will differ depending on the ratio of the transformer (less/greater than 10:1) or whether tapped, the terminals to which the starts of the windings will differ, which is why I added 'Refer to Data' on the front panel. (See fig 3 on page 3 of the article).

I found a small 6V transformer to press into service - the only thing I didn't have was a 1K wire-wound pot, so I splashed out on ebay for that!:

http://www.ebay.co.uk/itm/121723449171

This little project is running in parallel with the transistor curve tracer which I made the PCB for in 1982!

As to Alan's remark "One day when we're all dead...", to drift off into irrelevancies,  last week I attended the funeral of a fellow woodturning club member who was very fit and active until two months ago. He was a bachelor in his late 70s and had entered every monthly competition since joining the club fifteen years ago. I'd thought to myself 'I wonder what will happen to all of Ivor's turned items?' That question was answered at his wake - there were about 100 people, and every table had a dozen  items on it.  His brother announced: 'please take any of the items that you like, as a memento of Ivor's life'.

Rather a nice touch I thought. All of the items were nicely turned as they were competition pieces. I chose a little turned box about 3 inches high and two inches diameter. Cleverly done - the ring around the lower part isn't a layer of contrasting wood, which would have been easy to do. It's an accurately cut ring of veneer let into a groove. The ring in the top is just that  an accurately turned ring let into a groove.

As an aside, as he lived close by, I used to give him a lift to and from the club in a nearby village where parking is diffcult. He was Chief Examiner and President of the local branch of the IAM, so each time he sat alongside me it felt like I was sitting my driving test again!  He never turned down a lift, so I assume that he must have considered me up to scratch, but sadly, now I'll never know.