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Old 20th February 2013, 11:33 AM   #5751
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Quote:
Originally Posted by regal View Post
What are the voltage limits for the negative and positive, low current for biasig tubes.
Regal you have to look for in other thread this is for low voltage.

Salas High voltage thread Simplistic Mosfet HV Shunt Regs

Salas SSHV2 GB GB for Salas SSHV2 regulator

VIn 120-400VDC
Vout 100-380VDC
Current 20-100mA (self consumption 20mA)

Last edited by merlin el mago; 20th February 2013 at 11:35 AM.
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Old 20th February 2013, 11:36 AM   #5752
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@regal
Attached SSHV2 guide in PDF format.
Attached Files
File Type: pdf GuideSSHV2.pdf (326.7 KB, 122 views)
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Old 22nd February 2013, 03:46 AM   #5753
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I have a BIB kit from Tea-bag's group buy (PCB + 2 pos & 1 neg kits) and I would like to use it to power my Audio Alchemy DAC. I've measured both rails in operation and get the following:

+12V 230ma
-12V 8ma

After reading the BIB guide rev 2 a couple of times, the positive side seems fairly straightforward but I'm a little confused on the negative side. Is the 8ma current draw a problem? Should I be using a mosfet or BJT for this rail?

Thanks
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Old 22nd February 2013, 09:39 AM   #5754
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BJT only for voltages below of 5Vout.
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Old 22nd February 2013, 10:57 AM   #5755
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Default Mosfet gate stoppers resistor value

why there are various values of resistors used as a gate stoppers
I see 100 - 470 R Is used
what Is benefit of using lower / higher value
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Old 22nd February 2013, 11:53 AM   #5756
atupi is offline atupi  Romania
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Question: if i use a Salas shunt to power a DAC and between shunt and DAC chip or Receiver chip i have some other regs like lm1117-3.3 or lm1117-5 do i still benefit of advantages of using a Salas shunt ?
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Old 22nd February 2013, 12:48 PM   #5757
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Hello Salas,
i've build some of your regulators and now I'm working on a 3,3V using the old Quanghao PCB board.
I'd like to know if there is a maximum output capacity that I can put on the load.
Also I'd like to use this circuits as AVCC of my ES9018.
Normally many people use preregulation like "Placid" on Buffalo DAC and after an integrated regulator like LT1963 or "trident".
What do you think if I connect directely your simplistic Salas low voltage shunt regulator from the dedicate transformer winding to the ES9018 analog voltage pin?
I don't use Buffalo dac but a diy board.
Ciao
Guglielmo
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Old 22nd February 2013, 01:21 PM   #5758
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Quote:
Originally Posted by atupi View Post
Question: if i use a Salas shunt to power a DAC and between shunt and DAC chip or Receiver chip i have some other regs like lm1117-3.3 or lm1117-5 do i still benefit of advantages of using a Salas shunt ?
It would be better that you were removing the other regulators to keep all Salas perfomance.
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Old 22nd February 2013, 01:39 PM   #5759
regal is offline regal  United States
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Quote:
Originally Posted by merlin el mago View Post
Regal you have to look for in other thread this is for low voltage.

Salas High voltage thread Simplistic Mosfet HV Shunt Regs

Salas SSHV2 GB GB for Salas SSHV2 regulator

VIn 120-400VDC
Vout 100-380VDC
Current 20-100mA (self consumption 20mA)
For negative bias the range is typically 25-50V.
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Old 22nd February 2013, 01:39 PM   #5760
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Quote:
Originally Posted by merlin el mago View Post
BJT only for voltages below of 5Vout.

My voltages are both 12V out......

It's the 8ma on the -12V rail that I'm questioning.
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