>Rich Measures wrote:
>
>>>Hmmmm... I measure 12.7 ohms across the primary. A true center tap
>>>should be 9 ohms. Maybe something is wrong with mine.
>
>>Due to the current requirement difference, the two windings probably have
>>unequal resistances.
>
>Although a dual primary has the same number of turns on each winding,
>you can expect slightly different resistances (maybe up to about 10%)
>because the winding on the outside needs a longer length of wire for
>each turn.
>
This is not your average dual voltage transformer, Ian. The primary has
3 wires instead of of the typical 4 wires.
Rich...
R. L. Measures, 805-386-3734, AG6K
--
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
|