[time-nuts] 4 KV Power Supply Recommendations

Chuck Harris cfharris at erols.com
Mon Jan 18 06:21:28 UTC 2010


Ever see the spectrum of a typical microwave oven that is powered by a switching
power supply?  It is so broad and messed up that it will wipe out the wireless
routers that share the same band.  At least the old style ovens had a fairly narrow
60Hz spur somewhere around 2450MHz.

-Chuck

Didier Juges wrote:
> Keep in mind that the typical microwave oven power supply will be able to
> deliver about 100 times more power than sufficient to blow the ion pump to
> bits, in addition to the operator if he is not careful.
> 
> I would advise against even trying, even though operating the transformer
> with a 40W incandescent bulb in series with the primary would probably get
> you close, as long as you can still find an incandescent bulb, that is...
> 
> On a side note, I recently had a Panasonic microwave oven which had a
> switching supply (it was very light, but still rated 1200W). That would
> probably open up all sorts of hacking possibilities. The oven was much less
> than $100 at SAM's club. Unfortunately, the oven went with the rest of my
> stuff in the divorce settlement before I had a chance to open it...
> 
> Didier
>  
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Chris Stake
> Sent: Sunday, January 17, 2010 5:05 PM
> To: 'Discussion of precise time and frequency measurement'
> Subject: Re: [time-nuts] 4 KV Power Supply Recommendations
> 
> What is the operating voltage of the magnetron in a domestic microwave oven?
> Although VERY HAZARDOUS, it might be possible to adapt the PSU from an old
> one?
> Chris Stake
> 
> 
> 
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