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Author Topic: Outdoor solar powered LED garden lamp / Tear down.  (Read 41029 times)

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Online Kiriakos GR

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Outdoor solar powered LED QXS521 Tear down
« Reply #10 on: July 07, 2018, 06:02:11 PM »
I came across a solar powered toy this operating with QXS521 controller.

Unfortunately QXS521 controller this is restricted to handle 1.5 Volt battery and voltage output.
There is no hope converting this so to handle several brighter 2.8V LED.
It can only power up a single LED due it current limitations, output this is square wave at 160KHz at 1.8V Max

Very specific toy this is terrible as lights source but still it is good enough as gadget to impress an five years old baby.
Internal battery this is Ni-mh 1.2V 40mA.   

Working voltage: 0.7V~1.5V
 Input current: 1.2V / 22mA (47uH)
 Input current: 1.2V / 16mA (68uH)
 High efficiency: 84%
 Internal integrated light switch
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Offline 3xSpecs

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Re: Outdoor solar powered LED garden lamp / Tear down.
« Reply #11 on: May 20, 2019, 01:53:12 AM »
Never too late to include a ANA618 datasheet. Chinese and English.

Online Kiriakos GR

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Re: Outdoor solar powered LED garden lamp / Tear down.
« Reply #12 on: May 20, 2019, 09:15:14 AM »
Beginning of 2019 and because such tiny chip controllers they can hardly offer usable light power other than be a decoration gadget, I thought to start experimenting with a 5V controller.

My Circuit this is based on two transistors and a few resistors, the idea is simple.
An comparator circuit this works as a valve (electronic photo diode), when there is incoming sunlight,  LED's goes off, and charging begins.
Then, at sun down, this comparator circuit allows battery energy to flow at the LED's

My new project this is tested (electrical circuit) but now I am looking for finding best solutions regarding final assembly.
Solar panel will be placed at best location, and this IP67 housing will be installed in a location which will be most useful.
Over the spot light housing, I have install a bracket this holding another team of LED, by such a trick this light will be able to target at two directions.

Chinese makers of such gadgets they use low quality housing for such lights, plastics get burned from the sun, and clear acrylics loose their transparency.
I am now optimistic that a real IP67 spot light housing among with true glass, this is a much better solution.
   
 
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