Buck converter vs. linear voltage regulator - practical comparison

author ElectronFun.com   4 год. назад
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DIY Buck Converter || How to step down DC voltage efficiently

Previous video: https://youtu.be/AD772QQZ0Gc Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h Parts list (for the LM2576 IC): Amazon.com: 1x LM2576: http://amzn.to/1WzKrMV 1x 100µH Inductor: http://amzn.to/1VG32bf 1x 1000µF Capacitor: http://amzn.to/23gQZ3i 1x 100µF Capacitor: http://amzn.to/23gQZjR 1x 1N5822 Schottky Diode: http://amzn.to/23gQZAn Ebay: 1x LM2576: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=271435589946&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 100µH Inductor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=131689117589&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 1000µF Capacitor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=201546672797&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 100µF Capacitor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=291497780128&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 1N5822 Schottky Diode: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=221890516022&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg Amazon.de: 1x LM2576: http://amzn.to/1W0M7kq 1x 100µH Inductor: http://amzn.to/1W0MhYZ 1x 1000µF Capacitor: http://amzn.to/1pVxEHN 1x 100µF Capacitor: http://amzn.to/1W0Mj35 1x 1N5822 Schottky Diode: http://amzn.to/1W0Monp In this video I will show you an efficient and common way how to step down DC voltages. At the end of the video I will also demonstrate how easy it can be to build a buck converter with the help of the LM2576 IC. Music: 2011 Lookalike by Bartlebeats You want to support my videos? You can browse and buy tools&materials from my Amazon Store. This way I get a small commission: Amazon.de: http://astore.amazon.de/great043-21 Amazon.com:http://astore.amazon.com/gre09a-20 Amazon.co.uk: http://astore.amazon.co.uk/gre0b-21 Or you feel super generous and want to use this Amazon link as your Amazon home page. And do not worry, your purchases are all anonym and the prices are all the same: Amazon.de:http://www.amazon.de/?_encoding=UTF8&camp=1638&creative=19454&linkCode=ur2&site-redirect=de&tag=great043-21&linkId=ORZEQZEOVJAFURCZ Amazon.com:http://www.amazon.com/?_encoding=UTF8&camp=1789&creative=390957&linkCode=ur2&tag=gre09a-20&linkId=I5NDCEAVCD2OWM4S

Expensive Batteries vs Cheap Batteries!

Today I compare two teams of batteries: Expensive vs Cheap, tested over four rounds to see which is the longest lasting and which is the most cost-efficient. Here are my raw results (hours:minutes) for all four rounds: Duracell Quantum ($6.99) 1. 6:16 2. 7:21 3. 7:15 4. 6:41 Energizer Ultimate Lithium ($6.29) 1. 8:03 2. 6:31 3. 7:23 4. 6:44 Duracell ($3.99) 1. 5:58 2. 6:05 3. 5:07 4. 5:32 CVS Brand ($4.99) 1. 4:13 2. 4:45 3. 4:45 4. 3:57 Sunbeam High Drain ($1.00) 1. 4:01 2. 3:56 3. 4:19 4. 4:35 Panasonic ($1.00) 1. 2:59 2. 2:27 3. 2:22 4. 2:25 ------------------------------------------------------------------ Check out my new Patreon: https://www.patreon.com/freakinreviews ------------------------------------------------------------------ SHOP My Camera: http://amzn.to/2kzxH9P Audio Recorder: https://amzn.to/2T8CKRb Buy some of the popular products I've reviewed in my As Seen on TV store: http://amzn.to/2DJCTFW ------------------------------------------------------------------ SOCIAL MEDIA Follow my other social accounts, or contact me @freakinreviews on Patreon, Twitter, Instagram, and Facebook. My personal IG/SnapChat: baldvegas ------------------------------------------------------------------ MUSIC Music by Epidemic Sound "Action Sports Events 1" by Magnus Ringblom #duracell #energizer #freakinreviews

MOSFETs and How to Use Them | AddOhms #11

MOSFETs are the most common transistors used today. Support on Patreon: https://patreon.com/baldengineer They are switches that can be used an Arduino, BeagleBone, or Raspberry Pi. This is part 2 of a 2 part series, which covers MOSFETs. (Part 1 Covered BJTs). When it comes down to it, MOSFETs are pretty complicated devices. This video will cover the basics of what you need to use them in your circuit, including calculating if you need a heat sink or not. Learn what they are and how to use them. Part 1 (BJTs): https://www.youtube.com/watch?v=sRVvUkK0U80 Show Notes: http://www.addohms.com/ep11 Follow us on twitter: @addohms #mosfet #transistor #

Make 100% free energy generator with battery using the help of bearings at home invention

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Awesome flesh-burning death lamp. (Germicidal UV)

Another sensational eBay delight that you should probably not buy unless you really know what it is and does. It bathes a whole room in the icy glow of UVC narrow band ultraviolet, which can cause eye and skin damage to anyone in its vicinity. It appears that the "acarien" reference may be to do with killing dust mites. I'm not sure how effective that is, but it definitely puts out a lot of UV and makes the room smell strongly of ozone in the process. UVC tubes are often used in industrial food processing equipment to sterilise it in a cleaning cycle where the machinery runs while the lamp is lit inside. You also get water sterilisation systems where the water is pumped through a tube in close vicinity of a UV tube. If you really do want to buy one of these on eBay then the magic keywords are E27 and germicidal. The only ones I could find were 220V so they are probably really only intended for sale in China. I did see 110V blacklight lamps falsely advertised as germicidal. If you do buy one of these you MUST make anyone who might come across it aware that it is dangerous to look at or even be in a room with when lit. If you like weird and dangerous electrical stuff or have a genuine need for a convenient UVC lamp with integrated ballast, then this may be a worthy addition to your collection. If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- http://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.

In this video I'm comparing in practice a buck converter with LM7805 linear voltage regulator. Two driver boards from old hard drives are used as a dummy load to check efficiency and temperature of the buck converter and linear voltage regulator. I'm presenting pros and cons of both devices.
There are 2 mistakes in my calculations:
1. 5:02 - 5:08 - correct calculations should be: (12V - 5V) x 0.42A = 2.94W
2. 5:17 - 5:23 - correct calculations should be: (12V - 5V) x 0.22A = 1.54W
I double checked everything, but I should have triple checked. I'm sorry for my mistake.

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Video, edit, voice by Chris Lorkowski

Music composed and performed by Bensound - The Lounge
http://www.bensound.com

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