Why does your Microwave waste half its Power?

Video Description

The circuit inside a microwave oven is a half-wave doubler, an incredibly inefficient design. How does it work? Why do we put them in microwaves?! Huge thanks to Mehdi Sadaghdar (ElectroBOOM) for the consult: https://www.youtube.com/@ElectroBOOM ________________________________ VIDEO ANNOTATIONS/CARDS Alternating Current: https://youtu.be/7weMCsff0xw Capacitors Explained: https://youtu.be/zYRx6Zub3cA ________________________________ RELATED YOUTUBE VIDEOS EEVblog on Scope Safety: https://youtu.be/xaELqAo4kkQ Eugene on Rectifiers: https://youtu.be/J8A6QUxfk8c Hawley Hobbies's 6000 Volt Power Supply: https://youtu.be/OBQTBgFjFsQ ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum YouTube Membership: https://www.youtube.com/channel/UCXgNowiGxwwnLeQ7DXTwXPg/join Advanced Theoretical Physics (Paperback): http://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: https://www.scienceasylum.com ________________________________ HUGE THANK YOU TO THESE SUPPORTERS Asylum Counselors: Bosphorus Asylum Orderlies: Dhruv Singhal, Medec Hurtz Einsteinium Crazies: Benjamin Sharef, Eoin O'Sullivan, Ilya Yashin, Jonathan Lima, Joseph Salomone, Kevin Flanagan, OnlineBookClub, Sean K Plutonium Crazies: Al Davis, Compuart, Ellis Hall, Fabio Manzini, Kevin MacLean, Rick Myers, Vid Icarus Platinum Crazies: Bart Barry, Clayton Bruckert, David Johnston, Jon Adams, Jonas Wepeel, Jonathan Reel, Joshua Gallagher, Marino Hernandez, Mikayla Eckel Cifrese, Mr. Orn Jonasar, Olga Cooperman, Thomas V Lohmeier, William Hutchison ________________________________ OTHER SOURCES https://www.circuitbread.com/tutorials/half-wave-rectifiers-practical-demonstration http://hyperphysics.phy-astr.gsu.edu/hbase/Electronic/rectifiers.html http://hyperphysics.phy-astr.gsu.edu/hbase/Electronic/rectct.html. https://electronics.stackexchange.com/questions/24208/how-does-the-villard-circuit-double-voltage https://doi.org/10.1051/jphystap:019010010002801 https://www.physics-and-radio-electronics.com/electronic-devices-and-circuits/rectifier/voltagemultipliers-voltagedoubler-tripler-quadrupler.html ________________________________ LINKS TO COMMENTS https://www.youtube.com/watch?v=nSJtzn2H3Do&lc=UgxbWstCHiy9tmCV6tl4AaABAg https://www.youtube.com/watch?v=nSJtzn2H3Do&lc=UgwCEGbgVE7iEswGLNB4AaABAg https://www.youtube.com/watch?v=nSJtzn2H3Do&lc=UgxcMAbFdf-bULsGDwx4AaABAg ________________________________ TIME CODES 00:00 Cold Open 00:45 Half-Wave Rectifiers 01:44 Giant Transformer 02:42 Giant Capacitor 04:12 ElectroBOOM Rant 05:35 Low-Voltage Analog 06:32 Diodes 07:36 The Capacitor's Purpose 09:17 Half-Wave Doublers 10:20 Summary 10:54 Outro 11:28 Featured Comment ________________________________ Corrections: 01:32 "Utilization" would have been a better word than "efficiency." Half-wave rectifiers have a 50% utilization, not a 50% efficiency. They only utilize 50% of the provided voltage. 01:57 Phone chargers from the 1990s and early 2000s were simple transformers. Modern phone chargers are a more complicated design called an "Switch Mode Power Supply" or SMPS.