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Old 24th June 2013, 01:24 PM   #21
rsavas is offline rsavas  Canada
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Default Synthetic Load schematic

Quote:
... and probably you would not show us the details, like the schematic?
Not I, since it is copyright info from Elektor and Doug Self. You can purchase the article from Elektor, it was in May 2012.
Rick
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Old 24th June 2013, 01:37 PM   #22
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Quote:
Originally Posted by padamiecki View Post
... and probably you would not show us the details, like the schematic?
Bob's post just above yours gives it all away...

jan
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Old 25th June 2013, 03:19 AM   #23
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Originally Posted by padamiecki View Post
... and probably you would not show us the details, like the schematic?
Hi Pawel,

Are you referring to the phono circuit from the early 1980's that I mentioned above?

Cheers,
Bob
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Old 25th June 2013, 06:42 AM   #24
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Hi Bob
I do not want to be intrusive
I just wanted to know your practical circuit of synthetic mm cartridge loading
but of course I understood that it was not a part of your great article in LAv4
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Old 25th June 2013, 08:48 AM   #25
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Quote:
Originally Posted by rsavas View Post
Doug Self implemented the synthetic cartridge load ckt in the new 2012 pre-amp that was published in Elektor, have a look at that!!
Rick
It has been used since 1980-ties, AFAIK.

Click the image to open in full size.
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Old 25th June 2013, 09:27 AM   #26
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Thank you Pavel for this
I have not soldered yet pcbs for Actidamp mk IV
but Bob preffered to damp the load in the way: http://www.cordellaudio.com/preamplifiers/fig9.jpg fig b) and for me it is hard to understand real circuit (looks like opamp +10 and -1 are shorted)
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Old 25th June 2013, 10:07 AM   #27
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Hi Pawel,

The circuit "b" should work as well, though it is oversimplified.
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Old 25th June 2013, 10:10 AM   #28
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... it is oversimplified.
yes indeed
this is the reason I asked Bob about the details...
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Old 25th June 2013, 10:34 AM   #29
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Pawel, as our languages are similar, you might like to read the following link, you will easily understand it:

hifi.slovanet.sk :: Zobraziť tému - Předzesilovač pro MM přenosku - open project
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Old 25th June 2013, 10:56 AM   #30
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Thank you very much Pavel
It was easy for me to understand,
I have too unsoldered pcbs for ADIII
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