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Old 13th August 2003, 05:44 AM   #1
MIKET is offline MIKET  United States
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Default 6C45PI contant current source

Has anyone out there used the 6C45PI with a contant current source? This would seem an ideal way to use this tube.
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Old 13th August 2003, 05:59 AM   #2
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Default Re: 6C45PI contant current source

Quote:
Originally posted by MIKET
Has anyone out there used the 6C45PI with a contant current source?
Some test results here.
http://www.pmillett.addr.com/pentodes.htm

Quote:
This would seem an ideal way to use this tube.
Depends what you're trying to accomplish I s'pose.
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Old 16th August 2003, 09:09 PM   #3
MIKET is offline MIKET  United States
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Default Depletion Mode MOSFET current source

The current souce I had in mind was on this site
Cascade connected Depletion Mode MOSFET's Rev 4.d

http://home.zonnet.nl/horneman/mosfet.htm
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Old 16th August 2003, 09:30 PM   #4
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Default RE:Depletion Mode MOSFET current source

Hi,

The CCS your link is pointing at is one from fellow member Bas Horneman.

I think it's inspired by yet another members' pioneering work namely, Gary Pimm.

Small world, ain'it?

Cheers,
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Frank
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Old 1st September 2003, 08:44 AM   #5
kenev is offline kenev  Greece
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Hi MIKET,

In fact, I have used a constant current source on a 6C45Pi tube. This is used as an output amplifying stage in common cathode configuration after a passive I/V conversion of a TDA1541 DAC. The ccs I used is Gary Pimm' s BBMCCCS.
Previously, the output stage was used with a resistor as an anode load. Changing to the ccs, the difference I heard was HUGE. What I was reading about the benefits of the ccs was in front of me. This is not an expensive (like an anode choke) or dificult upgrade and I think you should try it.
Soon, I will post in the Digital forum my experience with the TDA1541 DAC.

Regards,
Evangelos
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