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Electrolyt as DC blocking
Electrolyt as DC blocking
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Old 2nd December 2012, 04:18 PM   #11
DF96 is offline DF96  England
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To answer the OP's original question, electrolytics can block up to around 450V DC - the voltage rating will be marked on them but it is wise not to push them to the limit. However, they all leak a bit so need to be used with care. When used inappropriately they can generate distortion.
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Old 2nd December 2012, 04:42 PM   #12
yagoolar is offline yagoolar  Poland
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Only Steve knows
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Old 11th December 2012, 07:52 AM   #13
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
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Electrolyt as DC blocking
Well I have been working with diy in 40 years and tried almost everything . Still think the electrolyts ( Silmic II ) do a great job. Still think everything starting with M is **** . Also I can;t see anything on your scoop. Is it paper on the sceen or ???

Also I have experienced the electrolyts is starting to leak dc from 12 V and up depending off impedance.
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Old 11th December 2012, 07:59 AM   #14
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
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Electrolyt as DC blocking
Quote:
Originally Posted by yagoolar View Post
Yes, I have tried and compared film to electrolitycs. Replaced elcaps or bipolars with styroflex or polycarbon in a couple of CDs, amps (SS & VT). The difference is huge across the whole spectrum of music.
See here also: The "Sound" of Capacitors
Yes the difference is huge but electrolyts are best for music reproduction. And I have heard arguments like yours and followed them too many years.

Now after 40 years I love my sound. Have only 4 filmcaps (KP 100 nf.) in my setup from CD media to loudspeaker units.

The 4 is after my Music Raills for my Holton Amps.
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Old 12th December 2012, 01:30 PM   #15
yagoolar is offline yagoolar  Poland
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Send a message via ICQ to yagoolar Electrolyt as DC blocking
Quote:
Originally Posted by Erlend Sæterdal View Post
Yes the difference is huge but electrolyts are best for music reproduction. And I have heard arguments like yours and followed them too many years.

Now after 40 years I love my sound. Have only 4 filmcaps (KP 100 nf.) in my setup from CD media to loudspeaker units.

The 4 is after my Music Raills for my Holton Amps.
Good for you then. I would be grateful to get familiar with arguments and numbers which are pro eletrolytic caps in the signal path. It is possible that I err.
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Old 12th December 2012, 02:19 PM   #16
AndrewT is offline AndrewT  Scotland
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Bateman is recommending back to back bi-polar for lowest distortion when you must use electrolytics.
But if the distortion is that low then maybe the reason for preferring electroytics might disappear along with the distortion.

Bateman also says high voltage does not give improved performance. He suggest around 50V if my first very quick scan has remembered correctly.

His papers were linked very recently in another Thread.
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Old 12th December 2012, 02:45 PM   #17
lcsaszar is offline lcsaszar  Hungary
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My rules of thumb: use electrolytics only when there is no other alternative
Usually in the power supply beyond a certain voltage/capacitance. Try avoiding it in input/interstage/output coupling wherever possible. Except if you like coloured sound Bypass it with a proper value film cap if you have to use it anyway.
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Old 12th December 2012, 03:29 PM   #18
DF96 is offline DF96  England
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Yes, use electrolytics when they are appropriate. This means when you need high capacitance values, can cope with the leakage current, and not where the capacitor sets the LF rolloff. Everywhere else don't use them.

Don't be frightened of them, as some people seem to be, but don't choose them deliberately unless you like a bit of distortion with your music.

Bypassing with a film cap can be a mixed blessing. Depends on application and electrolytic ESR.
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Old 12th December 2012, 04:49 PM   #19
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
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Electrolyt as DC blocking
Quote:
Originally Posted by DF96 View Post
Yes, use electrolytics when they are appropriate. This means when you need high capacitance values, can cope with the leakage current, and not where the capacitor sets the LF rolloff. Everywhere else don't use them.

Don't be frightened of them, as some people seem to be, but don't choose them deliberately unless you like a bit of distortion with your music.

Bypassing with a film cap can be a mixed blessing. Depends on application and electrolytic ESR.

Bad electrolyts ARE for sure bad Discover sound of MODERN types. We have 2012 and not 1970.
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Old 12th December 2012, 05:23 PM   #20
DF96 is offline DF96  England
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OK, suddenly the OP is now an expert.
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