MIKET said:Has anyone out there used the 6C45PI with a contant current source?
Some test results here.
http://www.pmillett.addr.com/pentodes.htm
This would seem an ideal way to use this tube.
Depends what you're trying to accomplish I s'pose.
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
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
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
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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