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previous: Joe Fuzz Tube Experts: Analysis Requested (R.G. et. al.) -- 12/11/1999 11:56 PM

Re: Tube Driver Analysis Requested

12/12/1999 7:24 PM
AMZ	Re: Tube Driver Analysis Requested >>I've been looking over the Tube Driver out at Jack's site and I'm stumped. In the patent, it states that the pull-up resistor increases the input impedance, provides comparable output Z and allows more headroom before clipping (1.2v rms vs. 0.7v for a convential bias). I haven't analyzed it beyond this but it must work to some degree since I have had mail from many people who built the circuit and it worked well for them. regards, Jack

12/12/1999 7:24 PM

AMZ

Re: Tube Driver Analysis Requested

>>I've been looking over the Tube Driver out at Jack's site and I'm stumped.

In the patent, it states that the pull-up resistor increases the input impedance, provides comparable output Z and allows more headroom before clipping (1.2v rms vs. 0.7v for a convential bias). I haven't analyzed it beyond this but it must work to some degree since I have had mail from many people who built the circuit and it worked well for them.

regards, Jack

Replies:

Joe Fuzz Hi, Jack. Nice to hear from you. ... -- 12/12/1999 9:46 PM