The simplistic Salas low voltage shunt regulator - Page 152 - diyAudio
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Old 17th November 2009, 11:13 AM   #1511
massimo is offline massimo  Italy
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Quanghao, how can you produce professional looking pcbs quicker than we can even think about?
Do you work in a pcb factory? Can we send you some drawings and have them produced as samples?
It goes without saying we pay for them and cover shipping costs

Last edited by massimo; 17th November 2009 at 11:17 AM.
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Old 17th November 2009, 11:52 AM   #1512
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[QUOTE=massimo;1983637]Quanghao, how can you produce professional looking pcbs quicker than we can even think about?
Do you work in a pcb factory?
No! Im design, I'm just a diy, I do Board for me and for my friend use.

Can we send you some drawings and have them produced as samples?
Ok! I can help you!

if you sent me you file, I think, It is standard after a week production is completed.
You can sent for me by e-mail: mythuat818 @ gmail . com Or
quanghao168 @ yahoo . com . vn
Thank
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Old 17th November 2009, 02:54 PM   #1513
iko is offline iko  Canada
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Quote:
Originally Posted by quanghao View Post
I gift to you one board, You can sent for mee your Adress, and information!
thank!
You're very generous, thank you, but I have no need for a board in this configuration.
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Old 17th November 2009, 10:30 PM   #1514
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by quanghao View Post
The Salas low shunt is very wonderful. I use for DAC , It is ver good!
you can see in board
! thank Salas!
Nice board !

Would you please post a schematic that goes with the board so we can all follow your work ?

Ricardo
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Old 17th November 2009, 10:36 PM   #1515
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator

He uses it for digital. 3 on one board. +/- +
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Old 17th November 2009, 11:00 PM   #1516
RCruz is offline RCruz  Switzerland
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Thank you Salas !
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Old 17th November 2009, 11:02 PM   #1517
RCruz is offline RCruz  Switzerland
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It is the same design i am using right now.

I am wondering if I should lower R1 to 9r5 as to get 250 mA current instead of 200mA in my riaa ?

Ricardo
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Old 17th November 2009, 11:26 PM   #1518
Salas is offline Salas  Greece
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If you got the sinking, the stronger you run it tends to become lower output impedance. If you have applied the force/sense wires already it may be even an audible bit in your low PSRR SE phono application.
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Old 18th November 2009, 09:21 PM   #1519
RCruz is offline RCruz  Switzerland
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Salas

Instead of searching for (unobtainablum) parts like 9,4 or 9,5 2w resistors, I was wondering if I could change the leds.

Can I use low current leds like : ROHM|SLR-342YC3F|LED, 3.1MM, YELLOW | Farnell Portugal

Does the current spec matter ?

Can I determine Vdrop from the led spec ?

Regards

Ricardo
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Old 18th November 2009, 10:32 PM   #1520
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Quote:
Originally Posted by RCruz View Post
Salas

Instead of searching for (unobtainablum) parts like 9,4 or 9,5 2w resistors, I was wondering if I could change the leds.

Can I use low current leds like : ROHM|SLR-342YC3F|LED, 3.1MM, YELLOW | Farnell Portugal

Does the current spec matter ?

Can I determine Vdrop from the led spec ?

Regards

Ricardo
I think the model numbers in the schematic are there simply because those are the only models available... There is no need for exotic LEDs.

Here are some models. I don't know how good they are.

.MODEL LED_RED D (IS=93.2P RS=42M N=3.73 BV=4 IBV=10U CJO=2.97P VJ=.75 M=.333 TT=4.32U type=LED)
.MODEL LED D (IS=93.1P RS=42M N=4.61 BV=4 IBV=10U CJO=2.97P VJ=.75 M=.333 TT=4.32U type=LED)
.MODEL LED_Blue D (IS=93.1P RS=42M N=7.47 BV=5 IBV=30U CJO=2.97P VJ=.75 M=.333 TT=4.32U type=LED)

- keantoken
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