[Test-Equipment] Rewind a transformer!

[Randy D. Hunt]

On 2/13/2013 1:08 PM, David wrote:
> On Wed, 13 Feb 2013 10:14:40 -0800, "Randy D. Hunt"
> <randy_hunt960 at yahoo.com> wrote:
>
>> On 2/12/2013 11:12 PM, Dave C wrote:
>>> http://www.youtube.com/watch?v=ZVSbt5q0KF8
>>>
>>> Very creative...
>>>
>>> Dave
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>> I like the idea of the transformer kit.  Did anyone notice the
>> difference in the amount of iron in the core as compared to the stock
>> transformer.  I would say the kit has about 2/3rds of the iron.  This
>> could be making his transformer run hot thereby causing him to have to
>> rewind it. . .  Just a thought.
>>
>> Randy, KI6WAS
> Presumably he adjusted the number of primary and secondary turns while
> keeping their ratio constant to achieve the recommended magnetic flux
> density at 50 Hz if the cross sectional area was different.
>
> Only two of the windings were moved to the transformer.  He kept the
> old one with those two windings removed and placed the primaries of
> both transformers  in parallel.
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Oh, yes, 50Hz.  I forgot about the lower line frequency. . .