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Re: Oil Burner Ignition Transformers
Subject: Re: Oil Burner Ignition Transformers
Date: Tue, 13 May 1997 19:41:25 -0400 (EDT)
From: "Daryl P. Dacko" <mycrump-at-cris-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
At 12:43 AM 5/13/97 -0500, you wrote:
>Daryl,
>It has also been my experience that ignition transformers were
>current limited the same as neons. I have ALWAYS found magnetic
>shunts in use whenever I repotted an ignition transformer.
>
>I did load curve testing on ten ignition transformers from several
>different manufacturers, and they all had the same current-limited
>load curve. In every case the current is max limited to 23 ma (this
>can vary a few ma).
<big snip>
>Alfred also remarked to me that every microwave transformer he has
>encountered has NOT had any magnetic shunts. This also goes counter
>to my own experience. I have ALWAYS found the magnetic shunts to be
>located between the primary and secondary, consisting of a bundle of
>iron strips wound with one or two turns of insulation and placed
>between the "O" and the "I" part of the core. Has any one else out
>there found anything different?
I did once find a microwave transformer that had no shunts, so I
must somewhat agree with Alfred. It was out of a larger
industrial/commercial microwave and had no sign of any type of shunt
for current limiting.
>This post is not designed to be nit-picky. I just don't want
>erroneous information being circulated. That kind of stuff has a way
>of taking on a life of its own. Repeat something enough times and it
>becomes "fact" in the minds of many.
Very, very true !
Thats one of the things I like about this list, there is a certain
dedication to truth...
<another big snip>
>Fr. Tom McGahee