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Old 11th June 2013, 08:15 PM   #831
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Great, how are you going to stick all that into a case?

Does your reference PSU have multiple voltage outputs thru that connector?
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Old 12th June 2013, 03:34 AM   #832
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Quote:
Originally Posted by merlin2069er View Post
Great, how are you going to stick all that into a case?

Does your reference PSU have multiple voltage outputs thru that connector?
I will find a way to get all parts in a case

All needed voltages goes through the military connector HERE.

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Old 12th June 2013, 03:56 AM   #833
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Oliver,

Do you have that latest board that has fix for the bugs (47k resistor, heatsink mounting holes) you mentioned way back then?

Also, can we use 6h30 tubes here?
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Old 12th June 2013, 05:07 AM   #834
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Quote:
Originally Posted by Lil Knight View Post
Oliver,

Do you have that latest board that has fix for the bugs (47k resistor, heatsink mounting holes) you mentioned way back then?

Also, can we use 6h30 tubes here?
Hi Lil,

the next batch will correct the two small bugs, but its really no big thing.

In principal you could use also the 6H30, but i havent any recommended B+, Rk & R I/V values for this tube.

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Old 23rd July 2013, 10:36 AM   #835
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Quote:
Originally Posted by dvb projekt View Post
Bargain Sale


Here you could order my ready build Tube-I-zator test module
(excl. Tubes, Rk & R I/V)

Main Parts

- Nichicon KX Series caps (HV-PSU)
- Panasonic FM Series caps (Heater PSU)
- Mundorf MCap EVO aluminium/oil 2.2F output caps
- Fairchild ISL9R460PF2 Stealth rectifier diodes

for the special price of


$99

including
Worldwide shipping and paypal fee


Click the image to open in full size.




If you are interested, please send me a PM.



Sold!
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Old 24th August 2013, 10:28 AM   #836
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Q. I want to incorporate SSHV. My voltages are 290v rectified to C-R-C. R=6.6k. When I add heater supply to tubes I get 284v before 6.6k and 222v after on anode. C=120u 400v for both. when the heaters turn off the voltage goes 290v. Iam thinking I can add higher resistor for C maybe 12k or so to bring V down to 170ish. I see an initial spike of 264v on power up as the tubes warm up gradually dropping down to 222v after 4-5 seconds. How dose this sound. My concern is the initial V spike at power up. THX
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Old 21st October 2013, 08:51 AM   #837
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Question Bias current injection...

Hi Oliver,

Is it mandatory to install the resistors in the tubes to inject the bias current injection to the TDA1541A? I have not done it and it sounds ok for me, a little lower volume level than other DACs but fine. Any clues?

Regards,

Jorge
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Old 21st October 2013, 09:17 AM   #838
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Quote:
Originally Posted by jcastellano View Post
Hi Oliver,

Is it mandatory to install the resistors in the tubes to inject the bias current injection to the TDA1541A? I have not done it and it sounds ok for me, a little lower volume level than other DACs but fine. Any clues?

Regards,

Jorge
Hi Jorge,

if you use the SSHV for B+ i strongly recommend to inject the 2mA bias current (SSHV out 150V --> 75K0 --> R I/V), because we get a high quality CCS here!

It takes 5 min. and you will get the max. performance out of the TDA1541A.


Cheers,
Oliver
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Old 21st October 2013, 09:21 AM   #839
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Talking Thanks Oliver...

Quote:
Originally Posted by dvb projekt View Post
Hi Jorge,

if you use the SSHV for B+ i strongly recommend to inject the 2mA bias current (SSHV out 150V --> 75K0 --> R I/V), because we get a high quality CCS here!

It takes 5 min. and you will get the max. performance out of the TDA1541A.


Cheers,
Oliver
I will do it ASAP!!

Thanks!!

Jorge
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Old 30th October 2013, 09:34 PM   #840
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Quote:
Originally Posted by DQ828 View Post
DVD

Crom just made me aware of the Rohpoint GG102A resistors that you are recommending

Do you have any idea what value would be suitable for BIII as the I/V resistors?

Also in the attached photo's it shows little brass stand offs, do you know what they are called I'm having trouble finding them?
Where can I buy thoose resistors ?
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