[AMPS] Re: New G2DAF amplifier information

[measures]

>Rich says:
>
>>The screen normally has a few nF of bypass C built into the socket
>
>Let's assume that the screen bypass is 5000pF, and the source resistance of
>the rectifiers is 1000ohms. This gives a time constant of 5 microseconds. So
>now assume that the phase delay on a 3kHz component is 3 time constants, and
>it represents 16 degrees. But the amplitude actually varies at syllabic rate
>which is much lower, so how much phase distortion is actually produced?

A complex problem .  Also, at say 14MHz, the grid is changing 
considerably faster than every 5uS.  .  
>
'tis a sticky wicket,  Peter

-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


--
FAQ on WWW:               http://www.contesting.com/ampsfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm