Joachim Gerhard Filter Buffer for ES9022 - Page 3 - diyAudio
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Old 24th July 2012, 09:11 AM   #21
Jolojl is offline Jolojl  Sweden
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Old 24th July 2012, 09:56 AM   #22
EUVL is offline EUVL  Europe
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We shall most like offer the passive SMD components as a service.
But shipping inductors and caps will increase the postage quite a bit.

Also ideally the inductors want to be matched.
So I suggest you organise among yourselves to buy those from Mouser in bulk, and then match and distribute.


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Old 24th July 2012, 10:14 AM   #23
syklab is online now syklab  Hong Kong
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Hi Patrick,
What is the value of the required inductors? Do we need to have a matched pair for L&R channel?
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Old 24th July 2012, 11:36 AM   #24
EUVL is offline EUVL  Europe
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As indicated in the schematics in post #1, the inductor is 18mH.

The source was already posted at that same thread, namely :
Anybody using the new ESS Vout DAC (ES9022)?

Use the "search this thread" function at that thread with the keyword "inductor" will give you all the information you might need.
As the inductor is part of a low pass filter, they should ideally be matched to say 1%.
Manufacturer specification is 5%.

We matched in our prototype, using a hand-held LCR meter.
They are not expensive, and accurate enough for matching (as opposed to measuring absolute value).


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Old 24th July 2012, 12:01 PM   #25
syklab is online now syklab  Hong Kong
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Quote:
Originally Posted by EUVL View Post
As indicated in the schematics in post #1, the inductor is 18mH.

The source was already posted at that same thread, namely :
Anybody using the new ESS Vout DAC (ES9022)?

Use the "search this thread" function at that thread with the keyword "inductor" will give you all the information you might need.
As the inductor is part of a low pass filter, they should ideally be matched to say 1%.
Manufacturer specification is 5%.

We matched in our prototype, using a hand-held LCR meter.
They are not expensive, and accurate enough for matching (as opposed to measuring absolute value).


Patrick
Clear.

Thanks
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Old 24th July 2012, 12:02 PM   #26
jonners is offline jonners  United Kingdom
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Last edited by jonners; 24th July 2012 at 12:06 PM.
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Old 24th July 2012, 12:20 PM   #27
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I count 19 now. Thank you that you trust in us.
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Old 24th July 2012, 01:59 PM   #28
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Hello,
434-02-183J RF CHOKE 18mH 5%

is the right code from Mouser?
Thanks
Guglielmo
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Old 24th July 2012, 02:08 PM   #29
EUVL is offline EUVL  Europe
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Yes, 434-02-183J

07MFG-183J-50 Fastron | Mouser


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Old 24th July 2012, 02:57 PM   #30
ccliu is offline ccliu  Taiwan
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