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HV-Shunt Module Pre-Order for 2nd Batch:
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------------------------
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morpheous 1x
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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:
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.
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:
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.
Shippin
That 50US$ dosent include the shipping cost?
Please inform me
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
Shippin
Sorry, Shipping to Irland
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
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
------------------------
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
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
------------------------
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
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
ipolyakov - 2x
------------------------
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
ipolyakov - 2x
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.
What is the load (mA) for your 220VDC measurement?
Oliver,
The measured 220V is without the load. I also tried just after the rectifier, it's also 220V.
Thanks,
Joe
Hi Joe,
your values are absolute normal and correct.
As you see on the following snapshot from the PSU Designer, there are the same values.
An externally hosted image should be here but it was not working when we last tested it.
If i add the ~35mA load from the shunt, the voltage drops to the recommended 170VDC input voltage.
An externally hosted image should be here but it was not working when we last tested it.
Best regards,
Oliver
Hello Oliver, there is a preferred point to get the ground line on the tubeizator to be connected to the star ground of the chassis? how do you ground yours?
thanks
Just connect one of the GND contacts to the star ground.
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
ipolyakov - 2x
savvas - 2x
------------------------
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
ipolyakov - 2x
savvas - 2x
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