Talk:Microwave oven

Latest comment: 25 days ago by Metroplint in topic Efficiency

TROLL Science: Mobile phone battery charging edit

Possibly a new fad to dupe ignorant people. Placing a flat battery (of any sort, but typically mobilephone Lithium Polymer types) does not charge the battery when the oven is operating.. It may produce an explosion and may cuase damage to the device or personal injury. Placing an electrical/electronic device in the microwave containing a discharged (flat) battery of any sort does not recharge the battey within the unit. Not only is it utterly stupid, but will destroy the internal electronics of the device. Source: www.4chan.org/b/ (expired thread), www.omeagle.com (various chatrooms being trolled) --unsigned by 115.70.80.179 at 13:54, 1 June 2013

power edit

Most now, at least regular sized, are 1100W power output. Many recipes assume 1100W for their instructions. Most for a NEMA 5 plug is 15A or 1800W, input power. Some smaller (in physical size) are only 400W or so output power. Industrial models might use a different plug and run higher power. Gah4 (talk) 03:57, 29 November 2021 (UTC)Reply

I agree with what you're saying, but this was under the "Residential" section, and they'd be plugged into a 15A circuit in the US. MainePatriot (talk) 05:13, 29 November 2021 (UTC)Reply
Yes. It seems that you can get 1100W from a 15A circuit. Gah4 (talk) 08:01, 29 November 2021 (UTC)Reply
This seems to contradict the later "Energy consumption" section pertaining to their efficiency. 1100W @ 50% efficiency would draw 2200W, which is far too much for a 15A circuit. That said, I haven't read all the sources yet, and you've argued that "There used to be a rule that RF sources were at most 50% efficient, but they seem to be better now." If so we could add that to the article's "Energy consumption" section to explain the apparent contradiction. I don't have time to find sources right now though. Maybe someone else will add it in, or I can get to it later. MainePatriot (talk) 16:07, 30 November 2021 (UTC)Reply
There seems to be plenty of discussion for 70% or 80%, and maybe 90% efficient magnetrons. I haven't looked hard enough to find an actual WP:RS though. The 50% is a rule-of-thumb, close enough many times, but not quite enough here. It is also the efficiency of a class-B amplifier just before clipping. Gah4 (talk) 07:52, 1 December 2021 (UTC)Reply
@MainePatriot Sample size of 2 here, but my 1100W residential microwave oven has a faceplate rating of 13amps, or about 1560W @ 120V, so that would imply an efficiency of 70%. I checked another 1200W microwave that I have access to and it had an actual IEC60705 rated output of 1150W and a rated power consumption of 1,550W, so about 75% efficient. EDIT: I just tested my microwave by heating a fixed volume of water (as the IEC60705 test does) and confirmed it puts out 1100W, but despite the faceplate saying 13amps and the manual specifying an input of 1500W, a Kill-A-Watt meter clocked it at 16A and 1900W (good thing it doesn't blow the circuit breaker!), which would place it at under 60% efficiency. --Ahecht (TALK
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Addition of the Solo Microwave or the Standard microwave para... edit

in the variation part we can add this as solo microwaves are the most common in normal households, etc

A solo microwave is the most basic type of microwave oven. It reheats, cooks and defrosts food evenly but cannot grill or bake. If you only need a microwave for your most basic needs, then a solo model will work just fine. However, keep in mind that it doesn't come with any special features and you can only use microwave-safe glass or plastic dishes with it . Dyrokg (talk) 17:57, 5 November 2022 (UTC)Reply

Wikipedia is not an appropriate place for product promotion. Mr. Swordfish (talk) 18:26, 5 November 2022 (UTC)Reply

1946. 1947. edit

Article says, in the lede,

Named the "Radarange", it was first sold in 1946.

Says 1947 later.

MBG02 (talk) 09:25, 9 November 2022 (UTC)Reply

wavelength edit

There are two frequencies used for microwave ovens. For home use, 2.45GHz. For larger industrial sized, 915MHz. The wavelength has to be smaller than the size of the box, which allows 915MHz for larger units. And yes, it doesn't have much to do with the size or otherwise of water molecules. Gah4 (talk) 12:49, 30 January 2024 (UTC)Reply

Efficiency edit

the article says efficiency as low as 50%. I measured my microwave and found 40% i.e. it consumes 1500W for the 600W programme Metroplint (talk) 09:58, 2 April 2024 (UTC)Reply