New power MOSFET makes solid state microwave oven possible

Wow, when was the last time you used an acetylene cycle lamp?

business.

Most efficient way is probably to attach a cupholder to the exhaust manifold.

miso schrieb:

Hello,

you need about 4,2 Ws to heat 1 g of water by 1 °C. For 1 kg of water heated from 10 to 100 °C, 378 kWs are needed. Using 180 W it will last for 2100 s or 35 minutes.

Bye

boonies.

handle that.

In the early 1960s. It gave a much brighter light than the electric bicycle lamps available at the time; it is only recently that I have seen anything approaching that level of illumination on a bicycle.

So 10 minutes for a cup-full?

Probably a small vacuum pump.

Cheers

You don't have a Mr. Fusion in your car?

Jamie

much of

before

Plus there is the tiny issue that every output transistor you use needs =

Plus at those currents you likely need 4 oz copper for workable PWB geometries.

?-)

Nah, self excited class C. Stick a probe into the cavity to get a sample of the output; the real challenge will be splitting and recombining the power, so it all arrives, in phase, with no parasitic oscillations between amps.

Heavier copper helps to carry heat further (increases the lateral heat diffusion distance, reduces thermal resistance), but remember it does absolutely nothing for the current flow at this frequency.

Tim

-- Deep Friar: a very philosophical monk. Website:

Plus at those currents you likely need 4 oz copper for workable PWB geometries.

?-)

Raise hood {Bonnet to you other side of the pond types.} Carefully place metallic container on exhaust manifold. Remove when hot.

David Lesher wrote in news:jse3eg$7cj$ snipped-for-privacy@reader1.panix.com:

you could get fancy and wind some copper tubing around the manifold or the exhaust pipe and circulate your water through it. for a cup or two,it shouldn't take long to boil it.

Magnetron-1624974.html

Mechanical magnetron? Where are the moving parts? It's just a toob with attitude;-)

And way obsolescent. (apart from things like 2N3866)

-- "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)

I've seen steak, wrapped in aluminum foil, cooked that way.

Since when has the weight of a microwave oven ever been an issue? Never seen one that one ordinary person couldn't lift into position and leave there for 20 years. (actually, I think I might have moved ours a half-dozen times in that duration, but still... we have no reason to replace it even after >20 years).

Most of the weight is shielding.

Dunno, I think my arms would give out long before fifteen years. ;-)

Full of expensive metals like copper, and big magnets, and such. All carefully machined.

sample of=20

power,=20

amps.

I suppose so. Then again there might be some DC components that would be helped. Most of the waste heat goes out the bolted metal block to a heat sink i expect.

?-)