CCS loading first stage of DC coupled driver - diyAudio
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Old 20th April 2004, 01:09 PM   #1
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Default CCS loading first stage of DC coupled driver

Hi,

I was wondering whether it's possible to CCS load the first stage of a dc coupled triode? The second stage is driving an interstage trafo.

Seems to me it should work, if I keep the load resistor to ensure correct voltage for the next stage?
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Old 20th April 2004, 01:32 PM   #2
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You need to be careful of the second stage's input capacitance, both direct and Miller, since this will negatively impact bandwidth. Sometimes it's necessary to interpose a follower between first and second stages just for that reason.
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