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Old 15th January 2005, 07:07 PM   #91
Electrons are yellow and more is better!
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Quote:
Originally posted by Upupa Epops
Very elegant solution have Dieter Burmester, but it is patented ( I forgot number of this patent ).
At the Arken exhibition 2004 I have seen his gigantic box but it was empty because it was so heavy

http://hififorum.nu/forum/topic.asp?TOPIC_ID=34612
http://hififorum.nu/forum/topic.asp?TOPIC_ID=32464
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Old 15th January 2005, 07:48 PM   #92
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To P-A : His " Mains washing machine " isn't so heavy , but is able to make DC unbalance of mains below +/- 1 mV .
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Old 29th January 2005, 06:46 PM   #93
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Default Re: Simple circuit

Quote:
Originally posted by Elso Kwak
Hi,
Attached a very simple circuit that is working since 29 years with a 1k5 Watt transformer.....(NOT a toroid BTW!) Of course this is a AC relay.
How is the delay determined with this circuit? Is the timing affected by all the components?
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Old 30th January 2005, 05:37 AM   #94
Electrons are yellow and more is better!
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1 The voltage drop of the R (caused by the resistance and the inrush current).

2 The pull-in voltage of the relay.
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Old 30th January 2005, 10:18 AM   #95
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Thanks, but what influence does the cap have? Surely that is what causes the delay.
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Old 30th January 2005, 08:03 PM   #96
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Quote:
Originally posted by richie00boy

MAPLIN - my vote for the most incompetently managed company in the UK.
ha ha - bit harsh but I know what you mean. Their website is a mine of misinformation and the catalogue is hilarious '...a very proffesional pair of headphones frequency response 5Hz to 35KHz £9.99...'
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Old 30th January 2005, 08:07 PM   #97
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That as well, but my comment is more directed by the fact that I have an understanding of what goes on inside the company. Joined-up thinking is something that company have yet to stumble across.
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Old 7th February 2005, 12:57 AM   #98
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Sorry to intrude.
The noisiest transformer in my (and I presume in everyone's) house is the refrigerator's one. Although I have dedicated power main for my system I still suspect this fellow for contaminating my music. Could a DC blocking filter be useful there?

Thanx
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Old 20th April 2005, 07:25 PM   #99
GregD is offline GregD  United States
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What about using an AC rated metalized polypropylene capacitor for DC blocking. Specifically, I'm looking at the Cornell Dublier SF series.
http://www.cornell-dubilier.com/catalogs/SF.pdf

It seems that this should do the job, handle lots of current, be relatively compact, and not require any bypass diodes for protection. Unless I'm missing something.
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Old 20th April 2005, 07:49 PM   #100
Electrons are yellow and more is better!
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Quote:
Originally posted by maxlorenz
The noisiest transformer in my (and I presume in everyone's) house is the refrigerator's one.
.... you mean compressor....
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