Hi, i am new in analog designs. Now, i am trying to design a circuit using STC(Schmitt Trigger Comparator) circuit to monitor the voltage level of a car battery which normally is around 12 volts. Im trying to use two LEDs,green and red, to indicate the voltage level of the car battery. If the voltage is above 11.6v the green LED will light up, then if voltage is below 9.6v, the red LED will light up. This means that the upper threshold voltage is 11.6v and the lower threshold voltage is 9.6v . Im currently stuck with this circuit , but I was advised to use zener diode and to scale down the UTP and LTP voltage.How can i do that??
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