Although I've featured this style of lamp in the past I've never done a full reverse engineer of the most common type. So here it is. It's one of those products that achieves economy through clever tricks that take a moment to get your head around.
Here's a generic link to find eBay listings for these, noting that some sellers are using the same keywords for ordinary LED lamps. So look for listings where they show someone bridging the cap with their fingers or with the screw-on switch cap to use it as a rechargeable work light.
https://www.ebay.com/sch/i.html?_from=R40&_nkw=e27+intelligent+emergency+led+rechargeable&_sacat=0&LH_TitleDesc=0&LH_BIN=1&_sop=15
Aim for a target price of around $3-4. Note that some may be for universal voltage and others may be intended for around 220V only.
The reference to another video on Patreon that was not released for general viewing relates to the device this is out of. A commercial emergency light sold from a prominent UK supplier. The company involved reacted immediately and had the product pulled from sale, and their supplier is now doing a recall on it. I've not released it for general viewing to allow a controlled recall. Any Patreon supporters who have not seen the video can still see it on that site.
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.
Here's a generic link to find eBay listings for these, noting that some sellers are using the same keywords for ordinary LED lamps. So look for listings where they show someone bridging the cap with their fingers or with the screw-on switch cap to use it as a rechargeable work light.
https://www.ebay.com/sch/i.html?_from=R40&_nkw=e27+intelligent+emergency+led+rechargeable&_sacat=0&LH_TitleDesc=0&LH_BIN=1&_sop=15
Aim for a target price of around $3-4. Note that some may be for universal voltage and others may be intended for around 220V only.
The reference to another video on Patreon that was not released for general viewing relates to the device this is out of. A commercial emergency light sold from a prominent UK supplier. The company involved reacted immediately and had the product pulled from sale, and their supplier is now doing a recall on it. I've not released it for general viewing to allow a controlled recall. Any Patreon supporters who have not seen the video can still see it on that site.
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.
Nice explanation. Sensing circuitry connect with SMPS circuitry through Live and Neutral connection. So when there is no power, sensing circuitry get a path through the SMPS circuitry and the LEDs will on using battery . In this situation if user switch off the light then also LEDs will be on. How to resolve this issue?
You are great as always. Thanks.
now even simpler with Driver on Board (DOB). controller uses BP68xx series IC and QW2886 rechargeable IC.
Can you give me fully diagram of this circuit ?? Because i want to make it own.. just for learn
Thanks for the video. I made your reverse engineered circuit. Working fine, Made exactly a light like that. Thanks for clear explanation and clarity.
Gerber File?
👍
sir can you please tell me what is the value of D7?
When the lamp didn't work, what the first thing we should check?
I liked
found it easier to buy a cheap led lantern from ebay
Thank you for clarifying this. I may not understand the very technical parts of it but by your explanation I get the general idea of how it works.
Genius.