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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: The phase response is the key feature here... posted by Steve O on March 25, 2007 at 12:18:24:
Correct. It's not intended as a tone control, its purpose is to nullify the phase shift of the coupling cap at low frequencies inside a feedback loop, and it can be as stable as direct coupling.This technique is used where direct coupling would be desirable but impractical. The resistor potential divider provides a workable DC level for the grid of the next stage, while the shunt capacitor prevents any resultant drop in signal level. You get a drop in DC but no attenuation of AC, like having your cake and eating it!
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- Re: The phase response is the key feature here... - Ray Moth 14:36:31 03/25/07 (0)
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