>
>> Rich said:
>>
>> "To avoid choke fires, keep all resonances at least 6% from amateur bands.
>> Choke resonances should be checked with the hv rf choke wired into the
>> circuit and not shorted."
>
>Colin said:
>> This is an example of bad information. The question was about series and
>> parallel resonances. As has been pointed out in other posts, parallel
>> resonaces are not bad at all. In fact, it is desired. A parallel
>> resonance will not result in a choke fire.
>
>Series resonances can only be found by shorting the choke from
>end to end and using a dip meter, or measuring the impedance
>with the choke open but only the bottom connected.
>
Adding a humungous shorting strap appears to shift resonances.
>In all cases the choke should be in the final location.
>
good advice
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|