Thane Heins Perepiteia.

[AbbaRue]

Very interesting!
I wonder how those new ovens can put out 1000 watts of microwaves without the big transformer in them.
This may be worth studying further.

[LarryC]

BLAH, BLAH, BLAH... 

I MEANT YOUR "BEER STAYS COLDER IN THE BOTTOM OF THE FRIDGE THEORY" DUDE! (and I'm not going anywhere near Larry's sexist slit comments)

T

One thing that I have noted in your many setups of the unaware, is that you must be a very experienced Canadian Trapper. I'm sure you know the following similar Beaver trap.

Regards, Larry

[i_ron]

One thing that I have noted in your many setups of the unaware, is that you must be a very experienced Canadian Trapper. I'm sure you know the following similar Beaver trap.

Regards, Larry

The unwary Larry and Ron at the T-mon's beaver trap... (again)

[hydrocontrol]

A sad word of caution... the newer ovens DON"T have transformers in them anymore.

Grab them ol' ovens before they are extinct!!!

Sort of a switching (flyback?) type power supply in the newer MO's as see below, (in comparison with a regular MOT transformer)

If the oven is really light... put it back on the curb...lol

I ordered four from Ebay since I do not have time to drive around town checking out Microwaves on the curb. The local Goodwill store does not accept Microwaves anymore.. At least from Ebay you get a picture of what you are getting. I ordered ones that looked like the ones i_iron was showing without having a clue about the power ratings. Once I get them and grind off the weld what is the next step ?
Thanks for the pictures i_iron. Keep them coming. I am more of a picture guy. I also like Thanes beer fridge picture.

[CRANKYpants]

I ordered four from Ebay since I do not have time to drive around town checking out Microwaves on the curb. The local Goodwill store does not accept Microwaves anymore.. At least from Ebay you get a picture of what you are getting. I ordered ones that looked like the ones i_iron was showing without having a clue about the power ratings. Once I get them and grind off the weld what is the next step ?
Thanks for the pictures i_iron. Keep them coming. I am more of a picture guy. I also like Thanes beer fridge picture.

I WOULD SUGGEST THAT YOU FOCUS MORE SO ON THE INDUCTANCE OF THE COILS RATHER THAN THE POWER RATING (SEE BELOW)... YOU ARE LOOKING TO CREATE A SELF RESONANCE EFFECT IN THE HIGH VOLTAGE COIL. 

CHEERS
Thane

Electrical resonance
From Wikipedia, the free encyclopedia

Electrical resonance occurs in an electric circuit at a particular resonance frequency when the impedance between the input and output of the circuit is at a minimum (or when the transfer function is at a maximum). Often this happens when the impedance between the input and output of the circuit is zero and when the transfer function equals one.

Resonance with capacitors and inductors

Resonance of a circuit involving capacitors and inductors occurs because the collapsing magnetic field of the inductor generates an electric current in its windings that charges the capacitor, and then the discharging capacitor provides an electric current that builds the magnetic field in the inductor, and the process is repeated continually. An analogy is a mechanical pendulum. In some cases, resonance occurs when the inductive reactance and the capacitive reactance of the circuit are of equal magnitude, causing electrical energy to oscillate between the magnetic field of the inductor and the electric field of the capacitor.

At resonance, the series impedance of the two elements is at a minimum and the parallel impedance is at maximum. Resonance is used for tuning and filtering, because it occurs at a particular frequency for given values of inductance and capacitance. It can be detrimental to the operation of communications circuits by causing unwanted sustained and transient oscillations that may cause noise, signal distortion, and damage to circuit elements.

Parallel resonant or near-to-resonance circuits can be used to prevent the waste of electrical energy, which would otherwise occur while the inductor built its field or the capacitor charged and discharged. As an example, asynchronous motors waste inductive current while synchronous ones waste capacitive current. The use of the two types in parallel makes the inductor feed the capacitor, and vice versa, maintaining the same resonant current in the circuit, and converting all the current into useful work.

Since the inductive reactance and the capacitive reactance are of equal magnitude, ωL = 1/ωC, so:

MORE... AT: http://www.electronics-tutorials.com/basics/inductance.htm

Self Resonant Frequency of an Inductance
All coils also exhibit a degree of self-capacitance caused by minute capacitances building up around and between adjacent windings.

Depending upon the application this may be of considerable concern. This self-capacitance combined with the natural inductance will form a resonant circuit (self-resonant frequency) limiting the useful upper frequency of the coil. There are special winding techniques to to use on occassion to minimise this self capacitance.