[AMPS] Stupid transformer question

[Steve Thompson]

-----Original Message-----
From: Jim Strohm <jstrohm@texas.net>
To: amps@contesting.com <amps@contesting.com>
Date: 16 December 2001 02:28
Subject: [AMPS] Stupid transformer question


>
>I have this old but intact HV transformer from a microwave oven that
>(wonder of wonders) doesn't require knocking out the shunt to use.
>Predictably, it has one end of the HV winding tied to the frame of the
>transformer.  Hoerver, the insulation between the HV windings and the
>laminations doesn't look good to withstand 2.5 KV.
>
>Am I better off to:
>
>1)  Lift the winding to ground and attach it to my rectifier bridge, while
>grounding the transformer frame, and take my chances on the insulation.
>
>2)  "Float" the transformer frame by placing it on suitable insulated
>standoffs, and attach the bridge to the frame and to the other end of the
>HV winding?  I would provide a reasonable guard cage around the
transformer.
3) Find another similar one (probably doesn't have to be identical) and
connect them so as to work in bi-phase half wave. That appears to be a tried
and tested method.

Steve


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