Isolating Transformer
- pre65
- Amstrad Tower of Power
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#46 Re: Isolating Transformer
Do you have any DC on your mains ?
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
#47 Re: Isolating Transformer
I use a basic Airlinks 2Kv isolation transformer. All my audio kit is fed through it. I found at certain times of day, particularly between 4 and 8pm, I frequently found the Airlinks was buzzing. I added on of Nick’s DC blocker boards and the Airlinks has not, to my knowledge, buzzed since.
- pre65
- Amstrad Tower of Power
- Posts: 21399
- Joined: Wed Aug 22, 2007 11:13 pm
- Location: North Essex/Suffolk border.
#48 Re: Isolating Transformer
Got my transformer wired up as Steve's now.
Just tested it, and I notice there is 8 volts more on the output over the input.
Not tried it in the system yet.
Just tested it, and I notice there is 8 volts more on the output over the input.
Not tried it in the system yet.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
#49 Re: Isolating Transformer
Hey that sounds fun!Nick wrote: ↑Sat Aug 04, 2018 8:48 pmWell, assuming the casework was not earthed, then with a single device (and ignoring leakage current) there is no way the case could go "live" as there is no current path from the secondary live or neutral to ground. Its why a site isolation transformer is used. You should be able to jump into a swimming pool holding a power tool and the transformer will keep you safe.it seems the casework would have to be connected to normal mains earth otherwise there'd always be a possibility the case could go live
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- Shed dweller
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#50 Re: Isolating Transformer
Funny you should say that Phil, I checked my BMU this morning after reading this thread and it’s 7volts over the mains input but that’s with no load.
Only the Sith deal in absolutes.
#51 Re: Isolating Transformer
Its a transformer, so it will have a regulation figure, so the off load voltage and full load voltage will not be the same. Pri and secondary winding resistance and core losses etc.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
#52 Re: Isolating Transformer
Where can I get one of these DC blocker boards from Greg/Nick? I ,like you Greg, have an AirLink that buzzes from time to time when certain household appliances are on in our house or somewhere in the street. Would like to stamp this buzzing out too...Greg wrote: ↑Sun Aug 05, 2018 9:01 pm I use a basic Airlinks 2Kv isolation transformer. All my audio kit is fed through it. I found at certain times of day, particularly between 4 and 8pm, I frequently found the Airlinks was buzzing. I added on of Nick’s DC blocker boards and the Airlinks has not, to my knowledge, buzzed since.
Cheers...
©2020 Lee
#53 Re: Isolating Transformer
I haven't got any made up ATM, but if you want a board PM me.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
#54 Re: Isolating Transformer
Nick, how different in terms of 'heavy duty-ness' and layout is this board as used by YNWOAN and linked to on Audioflat?
http://sjostromaudio.com/pages/index.ph ... heavy-duty
http://sjostromaudio.net/shop/mains-cir ... rsion.html
Currently just over £27for the board (is that expensive?)
Is it total overkill?
http://sjostromaudio.com/pages/index.ph ... heavy-duty
http://sjostromaudio.net/shop/mains-cir ... rsion.html
Currently just over £27for the board (is that expensive?)
Is it total overkill?
#55 Re: Isolating Transformer
Hard to know, that one looks like it designed (like most) to send all the current through the caps. I tested mine at 13A.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
#56 Re: Isolating Transformer
I think I have bought a Victron 3600VA, model.
I hope it arrives, just took a punt on it.
I hope it arrives, just took a punt on it.