🔴 Car USB Charger Teardown and Testing - No.1238
Ғылым және технология
12V to USB Charger Teardown and Testing
I teardown and then test a car USB adaptor which seemed to be giving trouble when in use, however the testing showed it was still working OK.
0:00 - Intro.
5:02 - DefCad Circuit Diagram of USB charger.
7:50 - Load testing output current of USB car charger.
9:36 - Testing output ripple and noise of USB car charger.
I really appreciate the donations and support I get from my Patreon Supporters and KZread Members, donations really do help me to make content for the channel and buy broken test gear, this hobby gets expensive !: defs.link/?u=fcb3a1
#TheDefpom
#ElectronicsCreators
#Repair
#Electronics
#Defpom
▶ Subscribe: defs.link/?u=ffa106
Click the Bell Icon to get notifications about my future videos!
Affiliate links: (Bookmark and buy using them)
▶ Aliexpress: defs.link/?u=551ec48
▶ Banggood: defs.link/?u=5d46ae
▶ Amazon Store: www.amazon.com/shop/thedefpom...
▶ 👕👚🎽☕ Merchandise: teespring.com/stores/TheDefpom
Donate so I can make more videos for you:
▶ Become a Patreon!: defs.link/?u=fcb3a1
▶ Become a KZread Member: / @thedefpom
▶ PayPal Donations: defs.link/?u=b099ee
▶ My Odysee channel: odysee.com/@TheDefpom:fa
▶ My Bitchute channel: www.bitchute.com/channel/TheD...
▶ My Utreon channel: utreon.com/c/TheDefpom
▶ Test Equipment Repair Videos: • Test Equipment Repair,...
▶ Electronics & Repair Videos: • Electronics & Repairs
▶ Review & Teardown Videos: • Teardown & Reviews
▶ Mailbag / Postbag Videos: • More Mailbag Videos
▶ Electronics Projects Videos: • Electronics Projects
▶ Apple Repair Videos: • Apple Repairs
▶ CB & HAM Radio Videos: • CB & HAM Radio Repair ...
▶ My website: www.TheDefpom.co.nz
▶ My Twitter: / thedefpom
▶ My Thingiverse for 3D printed replacement test equipment parts: defs.link/?u=0347b1
====================
My Electronics Tools (video and purchase links)
====================
Siglent
------
SDM3065X: defs.link/?u=1ed0fe defs.link/?u=12d498
SDS1104X-E.
SDS2102 (hacked to 340MHz): defs.link/?u=1ed0fe defs.link/?u=12d498
SDS2104 X Plus.
SPL-1008.
SDP1168X: defs.link/?u=1ed0fe defs.link/?u=12d498
SDL1020X-E: defs.link/?u=a0eccb
Other Equipment
------
UNI-T UTi260B Thermal Imager: defs.link/?u=f3283d7 (use discount code: BG45411)
KSGER T12 Soldering Iron: defs.link/?u=620ace defs.link/?u=5c112e
Quick 861DW: defs.link/?u=138c0f defs.link/?u=a3fc81
Pro'skit SS-331 Desoldering Station: • 🔴 ProsKit SS-331 Desol...
S-993A: defs.link/?u=079677 defs.link/?u=e855a0
EEVBlog BM235: defs.link/?u=12d498
YR1030 Battery ESR: defs.link/?u=c56527
Heathkit IT-12 Signal Tracer.
Racal Dana 1992: defs.link/?u=8eeeba
Bird 43: defs.link/?u=4b18f7
Sinadder 3: defs.link/?u=2bf1dd
Audio Control SA-3050A RTA: defs.link/?u=a04df2
Korad KA3305D: defs.link/?u=69090a
PDVS2mini: defs.link/?u=869ba4
Valhalla 2703: defs.link/?u=06bcfc
Feeltech FY6800: defs.link/?u=8b98cd defs.link/?u=34d101
Eakins Microscope: defs.link/?u=b0278b defs.link/?u=262327
Mustool G600: defs.link/?u=b8bc26 defs.link/?u=33f0aa
Uni-T UT210E: defs.link/?u=391ce3 defs.link/?u=ea4edc
DER DE-5000: defs.link/?u=0d9160 defs.link/?u=12d498
MK-328: defs.link/?u=0d9160 defs.link/?u=739ee7
MESR-100: defs.link/?u=0d9160 defs.link/?u=009419
ESR Meter: defs.link/?u=0d9160
HOPI: defs.link/?u=7fab55
PeakMeter PM6252: defs.link/?u=59ef66
HS1010: defs.link/?u=10c699
Пікірлер: 14
Interesting tear-down. Great stuff doing a spot of reverse engineering.
It always brings some joy when I hear it called an 'Accessory Socket' in a modern car :) My car is now officially 33yrs and 2 months old, and in mine, it is a cigarette lighter socket :) Also, if your socket is the issue, then modern cars have even bigger problems than I would have thought, in my car, you can literally pull the socket right out of the dashboard, because the connections broke a long long time ago, it even spins around inside the hole, yet it still works 100%, I have a 4 port splitter plugged into it which powers a GPS, dashcam, my Brass Monkey 30L fridge/freezer in the cargo area (It gets HOT here in Western Australia!), and a plug with 2 USB ports on it.
Those green caps are nasty. Had a little switcher go bad because the output smoothing cap had dried out, I replaced them all and it does the job perfectly.
Heat kills the dash cam, at least here in Florida. Thanks for the test video.
Always wondered which pins power the device. Probably Could have googled it but since your here...
Yeah well you should've swapped out that 100uF for the 470, the value the IC manufacturer recommends. Was there room to shoehorn one in ? Don't forget some of that ripple is being passed into the FB circuit.
The choice of caps is wrong on the output as they haven't addressed that 136Khz switching noise at all but as you say it is what it is and it handled the load like a champ !...cheers.
I'd run it assembled with 14.5 V and 1.5 A load, inside "cigarette lighter" socket, connect load trough USB port. I think it can be heat.
Try that USB charger at less than 12V. Is it possible you are getting a large volt drop at the socket, or brownout spikes? Otherwise, i've had same bad luck with dashcams until I switched to NextBase, they just work forever.
10:06 - I don't have OCD or anything - but damnnnnnnn. Look at that button labeled "SETUP" on the scope - totally off centered like Stevie Wonder made it.
@TheDefpom
2 ай бұрын
Damn it you’re right, now I cannot unsee it!
Who ever sold you that knock off cad should give you a refund. it seems to have been provided with a whole bunch of dodgy symbols. 🙂 I've had a few of this type which would knock the radio out with wideband noise. They seem to just use the example circuits shown in the datasheets and never add the other components required to keep the conducted and radiated emissions within limits. Now if anybody can find information on a mains dc switcher in a sot23-6 package marked 33p2 it would help Me a lot.
Audio is horrible. You are smart enough to do better my friend.
@GregM
3 ай бұрын
Audio is fine