is it possible? 1600W step-down transformer so tiny!

Have you tried asking the manufacturer if they have a 220v version?

CONSUMER SERVICE DEPARTMENT National Presto Industries, Inc.

3925 North Hastings Way Eau Claire, WI 54703-2209 Voice Phone: 1-800-877-0441 Fax Phone: 1-715-839-2242 Email: snipped-for-privacy@GoPresto.com

12,350W? That would draw more than 50A at 240V and produce over 42,000 BTU's, that's enough to heat a small house! 1,235W on the other hand is perfectly reasonable for a cooker.

That said, these converters are not transformers, they're essentially triac light dimmers and will only work for purely resistive loads, such as an electric cooker.

I've never seen any sort of portable cooker that had a ground connection anyway, mine has a standard 2 prong cord.

I wouldn't be so quick, the converters are simple and fairly robust. They should be fused and will be perfectly safe to use.

No it doesn't have a resistor in it, it doesn't dissipate the extra power, it effectively controls the duty cycle.

["Followup-To:" header set to sci.electronics.design.] On Thu, 30 Mar 2006 21:36:03 +0100, James Kelly wrote in Msg.

Ditch it, buy a real stove, and cook yourself some healthy food.

robert

On 30 Mar 2006 11:39:13 -0800, "Tim Shoppa" Gave us:

Good answer!

There is certainly no transformer in that device!

It would be a very bad thing for electronic circuits with brains.

Auto-transformers are smaller than transformers because they use the same windings for primary and secondary. Iron sheet volume follows. The reverse effect is that there's no isolation.

"Slurp" a écrit dans le message news:

442c3f2f$0$70319$ snipped-for-privacy@ptn-nntp-reader03.plus.net... 1000W

they

Just added up our (cheapo) cooker consumption:- 4 hobs 2000,1500,1500, 1000 grill 2850 oven 2400 if all on at once = 11,250 watts.

Geo

The converter has no ground connection. The oven has a large metal case that normally is grounded. Running a oven with a large metal case without ground connection isnt exactly what i think of being perfectly safe, especially not when the line/ground voltage is twice of what it was made for.

Also, the oven states it has a automatical timer, which will not like being run off such a converter and will likely fail.

It doesn't have the standard UK plug for a start...

--
*Could it be that "I do " is the longest sentence? *

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

Really? My cooker is rated at 12500W, it has a 60A feed at 240V, quite normal in the UK

I did not say it wasn't.

And either thermostat will turn them both off, and they definitely won't voltage-share properly, so it will blow up the control electronics in both.

IOW, a very very very bad idea.

Thanks, Rich

You of all people should have spotted I was pulling the OPs leg!

On double insulated appliances maybe, definitely *not* on a cooker which is no doubt meant to be earthed. The robustness of the unit is secondary.

Dave

Maybe so, but I'm willing to bet you are in North America, *not* the UK, which is where the OP is based. Earthed metal bodied kitchen appliances like bench top cookers are commonplace here.

Different country, continent for that matter- different regulations to conform to.

dave

Aren't we talking a small portable cooker? A fullsized kitchen range is normally 50A in the US, but I thought we were discussing a single burner hotplate type thing or toaster oven?

But isn't the cooker a NA model? Otherwise he wouldn't be needing a converter in the first place.

On Fri, 31 Mar 2006 13:28:54 +0200, "frischmoutt" Gave us:

The device he showed a pic of has NO transformer in it, you top posting, Usenet retard.