Posted: Mon Apr 25, 2011 4:52 pmWhat happens if you eliminate the gNFB and use only the plate to plate?
mike
mike
That's always worth a try
Cheers!
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Posted: Mon Apr 25, 2011 4:52 pmPosted: Mon Apr 25, 2011 8:27 pmAnode follower type dealie?
That's always worth a try
Cheers!
That's always worth a try
Cheers!
Posted: Tue Apr 26, 2011 2:55 amPlate to Plate NFB increases the second harmonic produced by the driver because its plate load is reduced (more vertical load line).
Posted: Tue Apr 26, 2011 4:25 amMerci for that Yves.... I thought it was because of harmonic addition/subtraction.
Cheers!
Cheers!
Posted: Tue Apr 26, 2011 5:57 pmSay, Since you are set up to do some measurements what do you say you try it with about 20k of resistance from the driver plate to C1 and bring the FB resistor to that junction instead of directly to the plate and see what it does?
mike
mike
Posted: Fri Nov 18, 2011 5:31 pmmashaffer wrote:Say, Since you are set up to do some measurements what do you say you try it with about 20k of resistance from the driver plate to C1 and bring the FB resistor to that junction instead of directly to the plate and see what it does?
mike
Hi Mike,
It would be equivalent to increasing the numerical value of the P2PFB resistor by 20K ohms and inserting a voltage dividing network to reduce the signal voltage swing at C1 somewhat.
I would love to try what you suggest, but, ever since I installed Windows 7 to the computer that I use as an audio workstation, the FFT software/audio card stopped working probably due to the driver mismatch. It may take me a while to get it back to working order.
(sick) 