This is a much simpler light than normal. Instead of the multiple options including continuous low light at dusk, switching to higher illumination when movement is detected, this unit just has a single function - switch on when movement is detected at night.
Unlike many of the shady grey imports from eBay, this unit has the sort of protection that you'd expect to be associated with a big name trying to protect its reputation.
There's still the issue of the lithium cell being outdoors in deep winter though.
I emulated the lithium cell with the bench power supply and the LED current was as follows:-
4.2V 1100mA
3.5V 530mA
3V 289mA
That's quite high for 12 ordinary LEDs in that style.
After removing one of the resistors the current was 790mA at 4.2V
Adding an extra resistor between one of the LED panel wires and it's PCB pad would allow a balance between night illumination level and the available daytime solar energy to keep the unit topped up. A value of 2.2ohms to 10 ohms could be used
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14 янв 2022
