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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: Neutralization of Miller capacitance posted by Tre' on March 12, 2017 at 16:53:42:
Indeed, grid resistors of the output stage may limit driver's Rp. Grid chokes might help though.
As to RF oscillation due to positive feedback, a good 2A3 design, with or without neutralization, should incorporate grid stoppers, or RF plate chokes, or a combination of both. These measures should prevent oscillation.
PFB is not necessarily evil in an audio amplifier, as has been discussed on this forum.
Here is a link to a practical high quality 2A3 amplifier utilizing neutralization in both driver and output stages:
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Follow Ups
- Grid resistors - sser2 18:04:54 03/12/17 (2)
- RE: Grid resistors - Tre' 19:06:59 03/12/17 (1)
- One more interesting thing - sser2 21:40:03 03/12/17 (0)
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