Comments on: Belkin Car USB Charger Repaired https://jestineyong.com/belkin-car-usb-charger-repaired/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Tue, 19 Nov 2019 08:46:07 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Albert van Bemmelen https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364431 Tue, 19 Nov 2019 08:46:07 +0000 https://jestineyong.com/?p=20692#comment-364431 In reply to abdellah kamli.

Thanks Abdellah, I was wondering about that after I read your previous post below about the AD85063D. But U1 could be an over-current or over-voltage protector like used on those small USB 5V Lithium ion charger boards? Maybe dear Parasuraman can shed a light on this question? Best wishes to you too!

Likes(0)Dislikes(0)
]]> By: abdellah kamli https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364420 Mon, 18 Nov 2019 19:57:20 +0000 https://jestineyong.com/?p=20692#comment-364420 In reply to Albert van Bemmelen.

Hi Albert,as you mentioned the AD85063D datasheet is easily available online. It's a less greedy chip carrying minimal compocomponents around (as you could notice by the datasheet) since not having external resistors like the chip MC34063. So the black circuit is probably a mistake and I guess the chip U1 has no link with the article.
Best wishes

Likes(0)Dislikes(0)
]]> By: abdellah kamli https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364414 Mon, 18 Nov 2019 10:42:37 +0000 https://jestineyong.com/?p=20692#comment-364414 A magnificent car USB charger repaired ofwhich the circuit is built around the chip AD85063D that requires minimum components and even the power indicator has no resistor limiting current that's already inside the chip.Compared to the similar converter MC34063 having more application modes,it really looks nicely designed and practical.Thank you for sharing this informative repair experience.
Best regards

Likes(1)Dislikes(0)
]]> By: Albert van Bemmelen https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364408 Sun, 17 Nov 2019 20:52:14 +0000 https://jestineyong.com/?p=20692#comment-364408 In reply to Albert van Bemmelen.

PS: The datasheet of the AD85063 is easily found and complete but do you know what function chip IC U1 is? (the smd code marking of that chip is sadly hardly readable).

Likes(1)Dislikes(0)
]]> By: abdellah kamli https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364406 Sun, 17 Nov 2019 20:21:39 +0000 https://jestineyong.com/?p=20692#comment-364406 Hi Abhinav,
Changing time depends on battery capacity and is controlled by the law Q=I*T where Q is capacity,I current and T time. Your Lenovo A690 mobile phone has 1500mAh battery capacity,by changing under Lenovo charger with its 700mA current the time is T=Q/I=1500/700 so T=2,14h,while with Redmi charger which delivers 2000mA the changing time will be shortest T=1500/2000=3/4=0,75h(45min).
Be aware the performance of the fastest Redmi charger is offered at the expense of the battery life,because the excessif changing current results in a heat damaging the battery. However, the battery capacity represents in itself a threshold for the charging current bywhich the battery charges under its own way and Without constraint.
If you need to use a car battery check if its output current is lower than the capacity 1500mAh.
Hope my answer is useful.
Greetings

Likes(2)Dislikes(0)
]]> By: Albert van Bemmelen https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364392 Sun, 17 Nov 2019 08:56:28 +0000 https://jestineyong.com/?p=20692#comment-364392 In reply to Abhinav Chaitanya.

I do not know about that type of Lenovo but know about the special 3 wire communicating power adapters from Dell and others that communicate through an extra resistor in the adapter with the Laptop mainboard. Why universal adapters fail to work as the original charger/adapter would. And I know that Lenovo laptops work badly without battery pack inserted causing video player problems when watching a movie or videoclip (like pixel blocks on my Lenovo Thinkpad 430S). Only with the battery inserted playing back videos works without any problem.

Likes(1)Dislikes(0)
]]> By: Abhinav Chaitanya https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364387 Sun, 17 Nov 2019 03:56:57 +0000 https://jestineyong.com/?p=20692#comment-364387 Informative.

I have a doubt, can somebody throw some light on it. I have a Lenovo A690 mobile which came with a charger
Brand: Lenovo
input: AC 100-240V 50/60Khz 0.15A
output: DC 5V 700mA
The company says use the same charger always.

I noticed that when I used another charger of brand Redmi with output DC 5V 2A, the performance of the battery differed i.e. the battery drain was faster than while using the original Lenovo charger.

Can somebody explain this behaviour? This means when I use the car charger similar problem could occur.

Likes(1)Dislikes(0)
]]> By: Robert Calk Jr. https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364382 Sat, 16 Nov 2019 20:36:19 +0000 https://jestineyong.com/?p=20692#comment-364382 Good job, Parasuraman!

Likes(1)Dislikes(0)
]]> By: Gassan https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364365 Sat, 16 Nov 2019 09:13:49 +0000 https://jestineyong.com/?p=20692#comment-364365 Well done!

Likes(1)Dislikes(0)
]]> By: Patrick Ribbsäter https://jestineyong.com/belkin-car-usb-charger-repaired/comment-page-1/#comment-364364 Sat, 16 Nov 2019 09:12:06 +0000 https://jestineyong.com/?p=20692#comment-364364 very good. thank you!

Likes(1)Dislikes(0)
]]>