hi everyone..is there anybody who has an idea on radio frequency heating>??>>.. need to develop a circuit for it that will be used for the preservation of fruits.....thanks a lot...


you can contact me..im from philippines


Ryan rivera
+639279738035

 

I've been studying radio frequency heating informally for a few years now. My interest is in differentially heating cutlery. I'm not sure how much I've learned would apply to making preserves, though.

You might start here: http://www.asminternational.org/Tem...te=Ecommerce/FileDisplay.cfm&file=ACF5038.pdf

or here: http://www.fairchildsemi.com/an/AN/AN-9012.pdf

One factor which makes a big difference is matching the impedance of the power supply to the work coil tank circuit. Another is work coil design.

Can you describe the cooking vessel you wish to heat?

 

I think the OP is talking about using microwaves to kill bacteria in the fruit so that it will not decompose.

There are several food processing plants in the US that do this. I don't have a clue as to what frequencies they're using, but I'm sure the power levels are at least several kilowatts. This would be extremely dangerous for a novice to fiddle around with, as high power microwave radiation could quickly kill someone.

 

It's not that dangerous.
http://www.freepatentsonline.com/5595775.html

Heat it to 81 degrees F and stick it in a freezer.

You could use a lab oven. The thermotron is good stuff. Char it to chill it!
http://www.lre.com/test/landing/thermotron/thermotron.htm?gclid=CNuX3Jz1gJECFRE_OAodvzBYHw