Joachim Gerhard Filter Buffer for ES9022

[Jolojl]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE

Great!

 

[EUVL]

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.


Patrick

 

[syklab]

Hi Patrick,
What is the value of the required inductors? Do we need to have a matched pair for L&R channel?

 

[EUVL]

As indicated in the schematics in post #1, the inductor is 18mH.

The source was already posted at that same thread, namely :
http://www.diyaudio.com/forums/digi...ng-new-ess-vout-dac-es9022-6.html#post2862262

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

 

[syklab]

As indicated in the schematics in post #1, the inductor is 18mH.

The source was already posted at that same thread, namely :
http://www.diyaudio.com/forums/digi...ng-new-ess-vout-dac-es9022-6.html#post2862262

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

 

[jonners]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU

 

[Joachim Gerhard]

I count 19 now. Thank you that you trust in us.

 

[guglielmope]

Hello,
434-02-183J RF CHOKE 18mH 5%

is the right code from Mouser?
Thanks
Guglielmo

 

[EUVL]

Yes, 434-02-183J

07MFG-183J-50 Fastron | Mouser


Patrick

 

[ccliu]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW

 

[EUVL]

4 more to reach minimum of 25.




Patrick

 

[jj506]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW

 

[Joachim Gerhard]

Now we have 25 !
I am really surprised how much interest this little circuit catches.

 

[necplusultra]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada

 

[leejh]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR

 

[steve jones]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA

 

[Greg Stewart]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA

 

[hochopeper]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA
hochopeper 1x Australia

 

[palmito]

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA
hochopeper 1x Australia
palmito 1x USA

 

[samoloko]

would anyone familiar with offered buffer tell us what are benefits of using It compared to no buffer at all - In case of ES9023 and generally