Search found 42 matches

by BilliumB
Thu Jun 14, 2018 8:13 pm
Forum: General Audio
Topic: Transformer Hum
Replies: 41
Views: 2099
Great Britain

Re: Transformer Hum

Nick I sold you something last summer that I thought might make be great improvement, but it was too big and heavy for me and I had no room for it. It seems it is still at MCRU. That would be worth experimenting with. Hello Doc Was that the large isolation transformer that you posted about some tim...
by BilliumB
Tue Feb 06, 2018 4:14 am
Forum: General Audio
Topic: BS546 unswitched sockets - recommendations?
Replies: 15
Views: 1034
Great Britain

Re: BS546 unswitched sockets - recommendations?

Thanks for the feedback. I was not aware that connecting a Faraday Cage to earth stopped it acting as a Faraday Cage (I do understand that it does not need to be connected to earth to act as a Faraday Cage), however I did ask the question to be sure that you meant it to be left floating as I guessed...
by BilliumB
Mon Feb 05, 2018 12:18 am
Forum: General Audio
Topic: BS546 unswitched sockets - recommendations?
Replies: 15
Views: 1034
Great Britain

Re: BS546 unswitched sockets - recommendations?

Would you connect the armour or leave it floating, with just the 'earth' core connected at the Consumer Unit and the BS546 socket?

Thanks. Bill
by BilliumB
Sun Feb 04, 2018 12:00 am
Forum: General Audio
Topic: BS546 unswitched sockets - recommendations?
Replies: 15
Views: 1034
Great Britain

Re: BS546 unswitched sockets - now moving on to Radial Cable recommendations

I've managed to get hold of a couple of fairly old (1970's or earlier) unused MK unswitched BS546 sockets (they look to be better quality than modern ones made at lower cost) - they even have shuttered Live and Neutral so should also be legal! I'm now thinking about the most suitable type of cable t...
by BilliumB
Thu Jan 25, 2018 1:10 pm
Forum: General Audio
Topic: BS546 unswitched sockets - recommendations?
Replies: 15
Views: 1034
Great Britain

Re: BS546 unswitched sockets - recommendations?

Thanks - I'll get hold of one and check the quality.

Cheers. Bill
by BilliumB
Thu Jan 25, 2018 12:01 am
Forum: General Audio
Topic: BS546 unswitched sockets - recommendations?
Replies: 15
Views: 1034
Great Britain

BS546 unswitched sockets - recommendations?

I'm finally making changes in the house and will be fitting a couple of radial circuits back to the incoming electrical supply Henley Blocks (with relevant safety bits and pieces). Planning on using unswitched BS546 sockets at the equipment ends - any recommendations on the best quality sockets to u...
by BilliumB
Fri Jun 30, 2017 4:53 pm
Forum: General Audio
Topic: Isolation transformer
Replies: 11
Views: 738
Great Britain

Re: Isolation transformer

I understand that recording studios often use an isolation transformer for the main feed, and also make use of balanced transformer(s) in some situations. Are Faraday shields normally included in balanced transformer designs?

Cheers. Bill
by BilliumB
Thu Jun 29, 2017 8:20 pm
Forum: General Audio
Topic: Isolation transformer
Replies: 11
Views: 738
Great Britain

Re: Isolation transformer

Use it in circuit before the BMU?
by BilliumB
Sun May 14, 2017 2:43 pm
Forum: Elsewhere on the Web
Topic: AoS
Replies: 17229
Views: 926507
Great Britain

Re: AoS

Do you think a dc blocker has any value in reducing the impact of the bad mains on the primary winding?

Cheers. Bill
by BilliumB
Wed Jan 18, 2017 12:47 am
Forum: DIY
Topic: Transformers
Replies: 19
Views: 2389
Great Britain

Re: Transformers

Thanks Geoff - interesting papers well worth a read. I certainly understand that Toroids offer lower impedance, and this must be good (and possibly paramount), whereas EI transformers offer better dc offset 'performance' and possibly a lower bandwidth (with potential noise blocking benefits). Intere...