[Amps] Ameritron Amps

[Steve Thompson]

R L Measures wrote:
> 
> On Jul 31, 2006, at 10:38 AM, Steve Thompson wrote:
> 
>>
>>
>> R L Measures wrote:
>>
>>>>
>>>> I can see an oscillation causing very high dissipation,
>>>
>>>
>>>
>>> Push-pull parasitics, yes, push-push parasitics no.  To explain:    With
>>> a push-pull parasite, the VHF energy from one tube alternately   pushes
>>> energy into the other tube,and vice-versa, so both tubes have  high
>>> dissipation until the operator stops transmitting.  However,  since
>>> there is a load on each half-cycle, there is no wild and crazy   arcing,
>>> and grid-I is not excessive. If you want to see a push-pull   parasitic,
>>> short out both parasitic suppressors in a SB-220,  transmit, and  with a
>>> litle bit of luck you will see both anodes turn  bright red,  The
>>> frequency is c. 50MHz.  .
>>>  However, Push-push parasitics tend to run amuck because they are   not
>>> loaded.
> 
> 
>> Sounds very complicated.
> 
> 
> Push-push is like a pogo-stick.  Push-pull is like a see-saw.  It's  
> elementary, Steve. cheerz
The topology is straightforward enough, not so the idea that one 
topology won't give high dissipation, the other won't give high voltage.

Steve