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Why no CCS in PP output stage?
Why no CCS in PP output stage?
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Old 8th April 2005, 07:10 AM   #11
reinhard is offline reinhard
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Bill Beard is using one current source for each tube, bridged by a big capacitor, that is a completely other thing, more a bias regulation, nothing differential.
Reinhard
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Old 8th April 2005, 07:16 AM   #12
planet10 is offline planet10  Canada
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Why no CCS in PP output stage?
Quote:
Originally posted by SY
In the linked John Swenson schematic, the input stage is not a phase splitter, it's a plain vanilla single-ended voltage amp.
The V1 version of swenson's amp used a trafo phase splitter. Tony's "preamp" is already a differential stage with balanced output -- the idea was to use the output of that to directly drive the grids of the EL84s.

dave
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