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

MrBungle · 30th Nov 2018, 9:51 am

I wouldn’t bother building a mains filter. Aside from the danger if you do it wrong or someone else comes across your creation, you can buy perfectly good ones integrated into IEC sockets or standalone for series wiring for £5-10 on RS. A decent set of X-Y capacitors and a common mode transformer is going to cost at least the same.

The main thing with the IEC ones is they are integrated into the chassis which means there is no opportunity for the noise to get in (or out!) before it gets into the device. The trailing lead variety isn’t quite as good.

Look for RS part number 2192785 for example.

Also don’t forget to replace your X class capacitors every decade or so. They are consumables and like to catch fire (I had a non RIFA one go the other day)

30th Nov 2018, 9:51 am	#22
MrBungle Dekatron Join Date: Jun 2016 Location: London, UK. Posts: 3,687	Re: Long Wave interference problem solved. I wouldn’t bother building a mains filter. Aside from the danger if you do it wrong or someone else comes across your creation, you can buy perfectly good ones integrated into IEC sockets or standalone for series wiring for £5-10 on RS. A decent set of X-Y capacitors and a common mode transformer is going to cost at least the same. The main thing with the IEC ones is they are integrated into the chassis which means there is no opportunity for the noise to get in (or out!) before it gets into the device. The trailing lead variety isn’t quite as good. Look for RS part number 2192785 for example. Also don’t forget to replace your X class capacitors every decade or so. They are consumables and like to catch fire (I had a non RIFA one go the other day)