Re: Transformer from a microwave oven
- From: "Phil Allison" <philallison@xxxxxxxxxx>
- Date: Sun, 23 Oct 2005 09:29:23 +1000
"Engineer"
>
> Can anyone think of something useful to do with this this transformer.
> All I can come up with is:
>
> 1. Use two of them back to back as a bench isolation transformer (but
> watch the 2 KV floating around!)
** = will get very hot and have *terrible* voltage regulation.
> 2. Use as the OPT for a weird single-ended tube amplifier with 3.8
> Kohm plate impedance (rather low) to a 15 ohm speaker (forget about 8
> ohm speakers - too low; also need to isolate the secondary from the
> frame (easy enough to do).)
** = no high frequency or low frequency response.
Microwave oven trannys have very high leakage reactance and cannot stand DC
in the secondary.
> 3. Use it with a voltage doubler or tripler for an electrostatic
> filter (would not fit inside most units so serious safety engineering
> required.) Much too big, though.
** You said it.
> 4. Run it off a suitable battery and interrupter (NOT AC mains!) to
> power an electric fence.
** Every home needs one of them to keep the neighbour's kids out.
> 5. Use it as a choke in a tube power supply. I'm not sure of the
> secondary winding inductance or current rating. Again, isolate the
> secondary.
** No air gap so unsuitable for DC operation.
> 6. Use to replace another failed one <g> Do they ever fail?
** Use it for bloody door stopper.
............ Phil
.
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