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Old 21st October 2010, 03:34 PM   #241
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Tube-I-zator Pre-Orders:
------------------------

Cris H. - 1x (please change to your nickname yourself!)
Jacques Merde - 2x
northcool - 1x
acccruz - 1x
hawall841 1x
morpheous 1x
neoinc 1x


HV-Shunt Module Pre-Order for 2nd Batch:
-----------------------------------------

Jean-Charles - 2x
kamaths - 3x
bequerel - 2x
morpheous 2x
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Old 21st October 2010, 03:58 PM   #242
joemana is offline joemana  United States
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[QUOTE=dvb-projekt;2339317]
It must be stable ~170VDC if you come from a 150VAC tap of your transformer.


Oliver,

Is it okay if I have 220VDC or do I have to reduce it first to 170VDV ? Also, may I know the resistor value of your RK and I/V on your Tube-I-Zator.

Thanks,

Joe

Last edited by joemana; 21st October 2010 at 04:10 PM.
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Old 21st October 2010, 05:01 PM   #243
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[QUOTE=joemana;2339612]
Quote:
Originally Posted by dvb-projekt View Post
It must be stable ~170VDC if you come from a 150VAC tap of your transformer.


Oliver,

Is it okay if I have 220VDC or do I have to reduce it first to 170VDV ? Also, may I know the resistor value of your RK and I/V on your Tube-I-Zator.

Thanks,

Joe
Hi Joe,

you must measure the input voltage with the reg. (~35mA load).
If you have with the load 220VDC input voltage, i think you must use a bigger sink!

The resistor values for a 6N2P/12AX7 is Rk=200R.
The R I/V depends on the DAC Chip you would like to use. If it is the TDA1541A i would recommend 56R with one DAC Chip.
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Old 21st October 2010, 05:30 PM   #244
joemana is offline joemana  United States
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[QUOTE=dvb-projekt;2339683]
Quote:
Originally Posted by joemana View Post
The R I/V depends on the DAC Chip you would like to use. If it is the TDA1541A i would recommend 56R with one DAC Chip.
Oliver, thank you much for your help.
I'll just reduce the B1 voltage with resistor as I don't want to change the heat sink size. What is the minimum input voltage for the HV shunt?
I have the Buffalo II DAC. I'll check the older thread, maybe a couple of Buf II owner/posters mentioned what R I/V value they are using.

Thanks,

Joe

Last edited by joemana; 21st October 2010 at 05:45 PM.
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Old 21st October 2010, 06:51 PM   #245
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[QUOTE=joemana;2339703]
Quote:
Originally Posted by dvb-projekt View Post

Oliver, thank you much for your help.
I'll just reduce the B1 voltage with resistor as I don't want to change the heat sink size. What is the minimum input voltage for the HV shunt?
I have the Buffalo II DAC. I'll check the older thread, maybe a couple of Buf II owner/posters mentioned what R I/V value they are using.

Thanks,

Joe
Salas recommend a Vin/Vout diff. of minimum 15-20V.
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Old 22nd October 2010, 10:28 AM   #246
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Quote:
Originally Posted by dvb-projekt View Post
As it stood in the post before:

Tube-I-zator: $30
HV-Shunt Module: $14
Europe shipping: $5
paypal fee 3.9%: $1,91

Total: $50,91

That 50US$ dosent include the shipping cost?

Please inform me
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Old 22nd October 2010, 10:29 AM   #247
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Quote:
Originally Posted by dvb-projekt View Post
As it stood in the post before:

Tube-I-zator: $30
HV-Shunt Module: $14
Europe shipping: $5
paypal fee 3.9%: $1,91

Total: $50,91
Sorry, Shipping to Irland
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Old 23rd October 2010, 09:48 AM   #248
diyAudio Member
 
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Join Date: Feb 2009
Location: Willich, Germany
Blog Entries: 37
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Tube-I-zator Pre-Orders:
------------------------

Cris H. - 1x (please change to your nickname yourself!)
Jacques Merde - 2x
northcool - 1x
acccruz - 1x
hawall841 1x
morpheous 1x
neoinc 1x
Crusty 1x

HV-Shunt Module Pre-Order for 2nd Batch:
-----------------------------------------

Jean-Charles - 2x
kamaths - 3x
bequerel - 2x
morpheous 2x
__________________
Reference TDA1541A DAC project PCBs / Tube-I-zator PCB / SSHV-Shunt PCB
Stock status in my Blog
  Reply With Quote
Old 23rd October 2010, 03:03 PM   #249
diyAudio Member
 
Join Date: Dec 2009
Tube-I-zator Pre-Orders:
------------------------

Cris H. - 1x (please change to your nickname yourself!)
Jacques Merde - 2x
northcool - 1x
acccruz - 1x
hawall841 - 1x
morpheous - 1x
neoinc - 1x
Crusty - 1x

HV-Shunt Module Pre-Order for 2nd Batch:
-----------------------------------------

Jean-Charles - 2x
kamaths - 3x
bequerel - 2x
morpheous - 2x
ksnider1 - 1x
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Old 23rd October 2010, 05:54 PM   #250
joemana is offline joemana  United States
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Anybody have a clue on why I'm getting (s/b 170Vdc) 220Vdc at B+ while my secondary is only (rated 150V and measured 150V at the terminal before the bridge rectifier) 150Vac?
All components on the board are the suggested parts.
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