[Amps] IM distortion and such

[Will Matney]

Rich,

I caught that too as class B should be cut off or like you said, ZSAC = 0. I think Tony said that sheet was from 1968. My manual sheets are from 1973, or at least the one on the 3-500Z. Tony e-mailed me another which is newer from around 1980 which has the drive power and impedance listed which mine did not. It was all the same except that. Mine though, or the one from Tony did not have anything about class B in it.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 6/27/06 at 6:35 PM R L Measures wrote:

>On Jun 27, 2006, at 1:37 PM, Will Matney wrote:
>
>> It's in the PDF file that was posted by someone earlier. There was  
>> nothing in it though about class AB RF amp operation.
>
>Will -- The stated ZSAC is 65mA.  With Class B, ZSAC is zero mA.   
>With Class AB there's some ZSAC, and with AB2 it means there's ZSAC  
>as well as grid-current during signal conditions.  Whoever wrote this  
>sheet did know his subject.
>>
>> http://www.mif.pg.gda.pl/homepages/frank/sheets/088/3/3-500Z.pdf
>>
>> Best,
>>
>> Will
>>
>> *********** REPLY SEPARATOR  ***********
>>
>> On 6/27/06 at 1:31 PM R L Measures wrote:
>>
>>> On Jun 27, 2006, at 6:51 AM, Will Matney wrote:
>>>
>>>> Rich,
>>>>
>>>> It was the same thing as they printed it I was refering, or to me
>>>> it was as I wrote it. It was Eimacs maximum rating at 1 KW input, G-
>>>> G, class B RF amp showing it's minimum distortion, or the way they
>>>> have it listed.
>>>
>>> I have seen no info from Eimac on Class B for the 3-500Z.
>>>>
>>>> Best,
>>>>
>>>> Will
>>>>
>>>> *********** REPLY SEPARATOR  ***********
>>>>
>>>> On 6/27/06 at 6:19 AM R L Measures wrote:
>>>>
>>>>> On Jun 27, 2006, at 2:46 AM, Tom W8JI wrote:
>>>>>
>>>>>>> They can be used on up in current, say for pulse circuits
>>>>>>> and RF heating. The 400 mA is the maximum plate current at
>>>>>>> single tone for minimum distortion. That's for 600 watts
>>>>>>> PEP useful power each. That's listed in the tables on page
>>>>>>> 2 or 3 under a class B RF amp.
>>>>>>
>>>>>> Will,
>>>>>>
>>>>>> Where did you get the idea 400mA is a "minimum distortion"
>>>>>> condition?
>>>>>
>>>>> Good point, Tom.  Will should have said something like:  for  
>>>>> minimal
>>>>> distortion, the max rated anode-I is 400mA.
>>>>>>
>>>>>> 73 Tom
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
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>>>>>> Amps at contesting.com
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>>>>>>
>>>>>
>>>>> R L MEASURES, AG6K. 805-386-3734
>>>>> r at somis.org
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Amps mailing list
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>>>>
>>>
>>> R L MEASURES, AG6K. 805-386-3734
>>> r at somis.org
>>
>>
>>
>>
>
>R L MEASURES, AG6K. 805-386-3734
>r at somis.org