Previous in Forum: A Building Suspended From An Asteroid..?   Next in Forum: What Is It?
Close
Close
Close
8 comments
Power-User

Join Date: Jun 2011
Posts: 140
Good Answers: 3

Panasonic Microwave

03/29/2017 8:52 AM

I have 2 questions:

I've torn down several broken micro's but I have no idea how They actually work.

What is an inverter in a panasonic microwave?

How does it work differently than any other microwave?

I've read what Panasonic says. They call it a turbo inverter whatever that means.

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
4
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9608
Good Answers: 1095
#1

Re: Panasonic Microwave

03/29/2017 9:10 AM

An inverter is a circuit that converts DC to AC. In this case 60 Hz AC is converted to DC and then an inverter converts it to 25KHz to 60KHz where it is converted to high voltage using transformers. High frequency transformers are smaller and lighter than low frequency transformers.

This explains it:

http://educypedia.karadimov.info/library/Inverter.pdf

Register to Reply Good Answer (Score 4)
Guru
Hobbies - DIY Welding - Wannabeabettawelda

Join Date: May 2007
Location: Annapolis, Maryland
Posts: 7782
Good Answers: 447
#2
In reply to #1

Re: Panasonic Microwave

03/29/2017 9:35 AM

What you save in weight is now replaced by lower reliability due to the extra complexity of an inverter instead of a dead-reliable iron core transformer to create the 3.5kV for the magnetron. I could see doing this on an airplane or maybe an RV, but quite frankly, I don't care how much the microwave sitting on my counter at home weighs.

Register to Reply Score 1 for Good Answer
Guru
United Kingdom - Member - Not a New Member Hobbies - Musician - New Member Hobbies - Fishing - New Member

Join Date: May 2006
Location: Reading, Berkshire, UK. Going under cover.
Posts: 9684
Good Answers: 467
#3
In reply to #2

Re: Panasonic Microwave

03/29/2017 9:50 AM

Suspect the reason for the inverter is magnetron power modulation. According to a comment in another thread, Panasonic microwave ovens control the microwave power, rather than just the duty cycle.

__________________
"Love justice, you who rule the world" - Dante Alighieri
Register to Reply
Guru
Hobbies - DIY Welding - Wannabeabettawelda

Join Date: May 2007
Location: Annapolis, Maryland
Posts: 7782
Good Answers: 447
#4
In reply to #3

Re: Panasonic Microwave

03/29/2017 12:07 PM

If that is true, that would be a welcome change to the current way of reducing the energy transfer to the food by very crudely turning the magnetron on and off with very large time periods. If they could steal a few cycles from a 25kHz inverter, then the instantaneous heating would be effectively reduced versus the current method of smoking the item, then letting it cool for ten seconds, then smoking it again, and letting it cool, . . . .

Register to Reply
2
Power-User

Join Date: Jun 2011
Posts: 140
Good Answers: 3
#6
In reply to #1

Re: Panasonic Microwave

03/29/2017 3:31 PM

Thank you all for your answers.

I Thank Rixter especially for figuring out exactly what I wanted to know but couldn't find it on the internet.

Many thanks to all.

Mike

Register to Reply Good Answer (Score 2)
Guru

Join Date: Sep 2016
Posts: 946
Good Answers: 9
#8
In reply to #1

Re: Panasonic Microwave

03/30/2017 6:35 AM

Do they have for nanowaves also?

Register to Reply Score 1 for Off Topic
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 32849
Good Answers: 1794
#5

Re: Panasonic Microwave

03/29/2017 1:30 PM

"Newer models have inverter power supplies that use pulse-width modulation to provide effectively continuous heating at reduced power, so that foods are heated more evenly at a given power level and can be heated more quickly without being damaged by uneven heating."

https://en.wikipedia.org/wiki/Microwave_oven

__________________
All living things seek to control their own destiny....this is the purpose of life
Register to Reply
Guru

Join Date: Sep 2012
Location: Iowa, USA
Posts: 577
Good Answers: 50
#7

Re: Panasonic Microwave

03/29/2017 9:26 PM

I have one of these Panasonic microwave ovens. It is the best one I've ever owned. Indeed instead of duty cycle of seconds on, seconds off, it modulates the power from 100% down to 10%. It has a reheat mode that works supper well. Near as I figure, it times how long it takes to boil the water in the food at full power, then based on this the machine reduces power to 50% for the remainder of heat cycle, with this timing based on how long it took to boil the water initially. Seldom is there cold spots. And it never fries the plastics from overheated oil. I believe it's a 1250 watt unit. It does have a turn table spinner to even the beam power radiation.

__________________
ignator -
Register to Reply
Register to Reply 8 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

Brave Sir Robin (2); gutmonarch (1); ignator (1); JohnDG (1); mikenelson6 (1); Rixter (1); SolarEagle (1)

Previous in Forum: A Building Suspended From An Asteroid..?   Next in Forum: What Is It?

Advertisement