Hi! I would be very grateful if you can help me.
I have been building some circuits to turn on a LED when the battery is low (images), but there is a problem: The led dim and blink between the OFF and fully ON state for some minutes.
My circuit consumes 0.23A and is supplied by a 3.7v/1400mAh Li-Ion battery.A variable resistor set the voltage
at which the led should light up, indicating "low battery".
For example, if I set 3.3v as low voltage, when you change abruptly from 4v to 3v the led turn on immediately, but if you leave the battery discharging, as would naturally be the case, there is a time lapse in which it start diming gradually and blinking until it lights up completely.
Is there any artifice I can implement to avoid detecting small variations in order to generate an immediate change from OFF to fully ON at the set voltage?
I would think of something like an averager or a rounding method, the problem here is that I do not use a microcontroller in the system to store values or program it to round values, everything is analog.
Thank you!
I have been building some circuits to turn on a LED when the battery is low (images), but there is a problem: The led dim and blink between the OFF and fully ON state for some minutes.
My circuit consumes 0.23A and is supplied by a 3.7v/1400mAh Li-Ion battery.A variable resistor set the voltage
at which the led should light up, indicating "low battery".
For example, if I set 3.3v as low voltage, when you change abruptly from 4v to 3v the led turn on immediately, but if you leave the battery discharging, as would naturally be the case, there is a time lapse in which it start diming gradually and blinking until it lights up completely.
Is there any artifice I can implement to avoid detecting small variations in order to generate an immediate change from OFF to fully ON at the set voltage?
I would think of something like an averager or a rounding method, the problem here is that I do not use a microcontroller in the system to store values or program it to round values, everything is analog.
Thank you!