Transformers

[pwdrive]

A not to complicated primer on transformer basics, for me it's well written:

http://www.navymars.org/national/trainin...74_ch5.pdf

Lawrence.

[SurreyNick]

Just the sort of document useful for new students of radio.
Thanks Lawrence.
Nick

[Ed_Dinning]

There should also be a primer on transformers written by Colin (retired) and myself some time ago.
This gives details of rewinding an unknown transformer for specific purposes.

Ed

[SurreyNick]

I'd be interested in that Ed. Any chance you could track it down?
Thanks
Nick

[pwdrive]

More stuff on constructing RF/IF coils, RF/LF chokes, interstage and output transformers etc etc in this classic little book:

http://golbornevintageradio.co.uk/forum/...p?aid=7637

Lawrence.

[Yorkie]

I'd be interested in that Ed. Any chance you could track it down?
Thanks
Nick

It's entitled 'Transformer Winding for Novices' Nick.

I'm using an i-pad away from home so can't post the link to the thread, but if you use the forum search facility with the above search string, and the forum  name 'Retired' (no longer a member), you'll find it. It's well worth a read.
 

[Mark Hennessy]

Here it is: http://golbornevintageradio.co.uk/forum/...p?tid=2028

[SurreyNick]

Excellent thanks
Nick

[Radio Fixer]

I had a brief look at that excellent Thread when it was posted and have just done the same again but this time I spotted the bit on pitch encapsulation.

Putting a pitched potted Xformer in the oven would be terrible trouble with SWMBO for me, and I bet for others. Even if I did it when she was out for the day she would know. I tried it once and her sense of smell picked it up as she came in the front door even though I had ventilated all day. Then she spotted a tiny speck of pitch that I had missed on her gleaming white oven ...

But there is another and better way. Drop the item in White Spirit and leave a couple of days. Then using gloves brush off the worst and repeat with fresh Spirit until clean.

Gary

[Refugee]

You can buy a slow cooker for £10.
The other half would wonder why I suddenly replaced the slow cooker when there was nothing wrong with it but they are just so cheap that there is no reason to do it in the main oven.