[Test-Equipment] Rewind a transformer!

David davidwhess at gmail.com
Thu Feb 14 01:42:01 EST 2013


For a given core you will but in my experience more cores are wound to
handle 50 Hz to start with or have enough leeway that it does not
matter.

On Thu, 14 Feb 2013 14:18:57 +1100, brianclarke01 at optusnet.com.au
wrote:

>
>
>	Isn't this the wrong way round? You need more iron for 50 Hz than for
>60 Hz. 
>
>	73 de Brian, VK2GCE 
>
>----- Original Message -----
> From:"Discussion of Electronic Test Equipment" 
>To:"Discussion of Electronic Test Equipment" 
>Cc:
>Sent:Wed, 13 Feb 2013 17:13:28 -0800
>Subject:Re: [Test-Equipment] Rewind a transformer!
>
>On 2/13/2013 1:08 PM, David wrote:
>> On Wed, 13 Feb 2013 10:14:40 -0800, "Randy D. Hunt"
>>  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.
>>
>Oh, yes, 50Hz. I forgot about the lower line frequency. . .


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