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What is the best Reverse Voltage Protection Circuit? || Repairing a Lab Bench Power Supply

2018-09-16

[public] 821K views, 23.4K likes, dislikes audio only

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Websites which were shown in the video (useful):

http://blog.deconinck.info/post/2017/12/22/18650-Battery-charger-reverse-polarity-protection

https://www.infineon.com/dgdl/Reverse-Batery-Protection-Rev2.pdf?fileId=db3a304412b407950112b41887722615

In this video I will show you how I repaired my lab bench power supply which got damaged through a battery which I connected the wrong way around. Along the way I will show you different reverse voltage protection techniques and show you their advantages and disadvantages. This way you will hopefully never damage your lab bench power supply like I did.

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Music:

2011 Lookalike by Bartlebeats


Intro
/youtube/video/7Tk5ghH_U2s?t=0
Opening the Power Supply
/youtube/video/7Tk5ghH_U2s?t=85
The Surprise
/youtube/video/7Tk5ghH_U2s?t=171
Fuse in series
/youtube/video/7Tk5ghH_U2s?t=181
Stop flowthrough
/youtube/video/7Tk5ghH_U2s?t=216
Reverse current
/youtube/video/7Tk5ghH_U2s?t=236
Pchannel MOSFETs
/youtube/video/7Tk5ghH_U2s?t=293
Output characteristics
/youtube/video/7Tk5ghH_U2s?t=343
MOSFETs
/youtube/video/7Tk5ghH_U2s?t=358
Battery
/youtube/video/7Tk5ghH_U2s?t=404
Conclusion
/youtube/video/7Tk5ghH_U2s?t=487
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