Hi,
I have this huge 36 volt 3 watt led light that I plan to use as a front headlight on my e-bike to light up the forest. I tried it for a few seconds connected directly to the 36 volt battery (42 volt fully charged). Is there some special consideration I should do to protect the light and battery, or can I just connect it directly permanently? I plan to use a regular table lamp switch on the cable for on/off. Maybe a fuse? Anything else?
I have this huge 36 volt 3 watt led light that I plan to use as a front headlight on my e-bike to light up the forest. I tried it for a few seconds connected directly to the 36 volt battery (42 volt fully charged). Is there some special consideration I should do to protect the light and battery, or can I just connect it directly permanently? I plan to use a regular table lamp switch on the cable for on/off. Maybe a fuse? Anything else?
As long as you make it waterproof, you don't have to worry about biking around in a desolated forest on your own with a ridiculous huge headlight.
LEDs require a constant current source of at least the voltage they are rated at. Not a voltage of with unlimited current!
In this case at least 36v at 100mA maximum.
In this case at least 36v at 100mA maximum.
Thank you, this is why I asked. Any suggestion how to limit the current from the 36V 10Ah battery?
Here is the info about my Led light:
Maximum forward current is 830 mA. Power is 30 watt. I am looking for something more elegant than wasteful resistors.
Here is the info about my Led light:
Maximum forward current is 830 mA. Power is 30 watt. I am looking for something more elegant than wasteful resistors.
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Find something using a buck-boost circuit like LM5176.
http://www.ti.com/lit/ds/symlink/lm5176.pdf
or a proper led switching circuit.
http://www.ti.com/lit/ds/symlink/lm5176.pdf
or a proper led switching circuit.