[AMPS] Swinging Choke Theory

[measures]

>
>     A swinging choke is a cheap form of open loop voltage regulation.

Swinging chokes maintain constant-current, Not constant-volts.  
Resonant-chokes maintain constant DC voltage.  

>As the current increases the inductance decreases this increases
>the voltage on the following filter capacitor.  In essence the filter 
>configuration
>swings from inductive input when the current demand is low (large 
>inductance) to
>nearly a capacitive input filter when the current demand is high (small 
>inductance).
>
cheers, Bill
>
>
>At 04:21 AM 3/28/00 -0700, you wrote:
>
>> >  As to whether the best use of your swinging choke is for a book end, I
>> >cannot say.  However, it is better than leaving it on the floor where you
>> >walk into it from time to time and regret it, but postpone moving it until
>> >the next time you walk into it.
>> >There is another useful side effect on using a choke input PSU. This in in
>> >the smootinh og the input current to the supply. When operating from the
>> >mains, this is of little consequence to the user. When operating from a
>> >generator on filed day, it does help quite a bit with the regulation.
>> >
>>Swinging chokes seek to maintain constant current come hell or high
>>water.  .  Is this what you want for SSB?
>>
>>
>>-  Rich..., .

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


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