|DIY Audio Projects Forum
|LM317 cathode bias
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|Author:||Gab [ 22 Jul 2019, 14:28 ]|
|Post subject:||LM317 cathode bias|
Do you guys have experimented with a LM317 used as a constant current "sink" to bias an output stage ? I have seen this used in the RH amplifiers
I was wondering what are the advantages of regulating the current through the valve instead of using the regular resistor ?
These regulators have a maximum voltage, wich might limit the possibilities, or force the use of an NPN to raise its volage rating...
|Author:||M. Gregg [ 22 Jul 2019, 16:41 ]|
|Post subject:||Re: LM317 cathode bias|
I used it on my EL34 SE,
But combined it with cathode feedback and a few other things.
All the best
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