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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: How do you intend to maintain identical currents posted by ChasLieb on March 23, 2007 at 12:54:51:
Such series reg tubes drift like crazy and I would STRONGLY recommend you have a 1% one ohm R between each cathode and the CCS and monitor this created cathode to cathode voltage with a sensitive front panel center zero meter- and adjust the drift out on a (almost) daily basis with a front panel accessable pot that varies the respective grid voltages.Putting CCS's in the anodes will NOT control the cathode current very well, if at all, and as others have said - can lead to unworkable situations where one tube goes to max current and the other to zero current and stays locked there until you unbalance the setup enough that it flops the other way!
Regards, Allen
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- To be blunt - good luck! - Allen Wright 05:54:52 03/24/07 (0)
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