The 3.2 come from 2 AA batteries, and the button is connected to a led. Here's the datasheet of the led: datasheet.Welcome to AAC, @eli-ott
Where does the 3.2V come from?
What is the button connected to?
How much current flows through the button?
I don't have a current limiting resistor in series, is it necessary ? If yes may I have a little bit more information on how to do it ? Because the led is rated at 3.1V, so a 100 ohm would be a little too much I think. Or a 0 ohm can maybe do the same work (it's probably dumb)?Have you got a current-limiting resistor in series with the LED?
If not, the LED will pull the battery voltage down when you press the button - and draw a lot of current.
Pretty bad news not going to lie. Is there any option to still make it decently work with batteries. Like maybe with a 100/200ohm resistor?These high-power LEDs are not really designed for battery operation.
The thing also is that I still want to have a good light, and I tried with a 100 ohm resistor but the light decrese by a lot. I was also wondering if a 0 ohm resistor can regulate the current or not ? Or I have 10/20/47 ohm resistor.So, without a series resistor the current is being limited by the internal resistance of the battery.
You're absolutely right. And also the problem with C cell or D cell battery is their sizes, like the size of an AA battery is the maximum to make something decent. I'm also curious with your circuit do you have any links so that I can take a look by curiosity please ?It would be possible to make a circuit to drive the LED correctly from a wider range of battery voltage but this is a complex circuit beyond your expertise. Sorry to say that - but I can tell you do not know much about electronics!
Yeah I think I'm ready to sacrifice the AA size for the C cell batteries. But if I use C cell batteries do I need a current-limiting resistor or the batteries are good on their own?If you want to stay with AA cells then I would suggest a much smaller LED. Say a half-watt size instead of 8watts.
You will need a current limiting resistor regardless. Otherwise when you supply more current, the LED will burn out!!!Yeah I think I'm ready to sacrifice the AA size for the C cell batteries. But if I use C cell batteries do I need a current-limiting resistor or the batteries are good on their own?
by Aaron Carman
by Duane Benson
by Aaron Carman
by Jake Hertz