>
>> ? For c. five years, the ARRL Handbook had the wrong Pi-L tank values -
>> - despite being repeatedly told about the problem. .
>
>Is it easy to explain what is wrong about the values?
>
? The error was in C2, Eventually it was fixed.
> > since 1995, the Handbook has had an inaccurate method of calculating RF
>> current in a DC blocking cap. My guess is that it will remain there until
>> sometime around 2040. .
>
>What is the correct method?
? Calculate the difference between instantaneous anode potential at max.
conduction and anode supply potential. Divide by 2^0.5 to convert peak v
to RMS v. . Disconnect the C1 side of the blocking cap. Measure
anode-C. with tube in socket Calculate capacitive-reactance in ohms.
Current=volts/ohms.
? later, Tom
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|