Varible Frequency Microwave Oven

[duordi134]

I have a need for a microwave oven which uses a specific wave length to heat a specific part of a composite sample more than another part of the sample.

Normal microwave ovens have a random frequency and amplitude and the frequency is not adjustable.

A radio like a short wave radio would work but it does not have an adjustable carrier wave.
I would have to have an adjustable carrier wave.

The frequency and the amplitude could remain constant while the signal was intermittent or the amplitude could be varied while the signal remained constant.

My hope is that something like this is exists already which can be purchased.

If not I will have to build one which brings up some safety concerns.

Any thoughts?

Thanks

Duordi

 

[jim hardy]

Normal microwave ovens have a random frequency ...

i don't think that is so.

I think they operate at 2.45ghz.

 

[davenn]

Normal microwave ovens have a random frequency ...

i don't think that is so.

I think they operate at 2.45ghz.

agreed ... their freq is well defined and any freq drift is likely to be reasonably low
from what I have read, in days gone bye, around a couple of MHz

cheers
Dave

 

[Baluncore]

You can still expect an initial chirp of about 100MHz while a magnetron approaches operating temperature.

I have a need for a microwave oven which uses a specific wave length to heat a specific part of a composite sample more than another part of the sample.

Do you want to select which material is heated based on microwave absorption spectrum?

If so what materials are you trying to differentiate and what are their absorption spectra.

 

[alphy]

I can understand your need for a microwave oven that uses a specific wavelength to heat different parts of a composite sample. This is a common requirement in many scientific experiments and processes. However, it is important to note that normal microwave ovens are designed for general household use and are not optimized for specific scientific purposes.

To achieve your desired result, you would need a variable frequency microwave oven. These types of ovens are designed for industrial and scientific applications and offer the flexibility to adjust the frequency and amplitude of the microwaves. This allows for precise heating of different parts of a sample.

It is possible that such ovens already exist and can be purchased. I would recommend researching industrial microwave oven manufacturers and their product specifications to find one that meets your needs. However, if you are unable to find a suitable option, building one yourself is a viable option. Just make sure to follow proper safety protocols and consult with experts in the field to ensure the design and construction of your oven meets all safety standards.

In conclusion, a variable frequency microwave oven is a necessary tool for your specific application. I suggest exploring the market for existing options or consulting with experts to build one that meets your needs and safety requirements.