Hello
I'm wanting to use this circuit in a small, 2 battery, AA powered vacuum.
I want it to light the LED when the combined battery power of both batteries drops below (approx) 2.5v
The problem is, this circuit is set up for a minimum of 6volts. It seems that all I need to do is use a higher value resistor for R3 but I'm not sure and what resistance.
Can you help?
Thanks
Data Sheet for TI TL431
http://www.ti.com/lit/ds/symlink/tl431a.pdf
I'm wanting to use this circuit in a small, 2 battery, AA powered vacuum.
I want it to light the LED when the combined battery power of both batteries drops below (approx) 2.5v
The problem is, this circuit is set up for a minimum of 6volts. It seems that all I need to do is use a higher value resistor for R3 but I'm not sure and what resistance.
Can you help?
Thanks
Data Sheet for TI TL431
http://www.ti.com/lit/ds/symlink/tl431a.pdf
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