Hello,
I'm using one side of LM358N as a comparator. A voltage divider using a photoresistor and a resistor connected at the inverting input, and a trimmer potentiometer at the non-inverting input. The datasheet says that Vcc can be as low as 3V. In my circuit Vcc=4V, and the output is 2.8V when high. I thought the IC is corrupted so I used another one... but it's the same. Is this normal since the supply voltage is low(4V)?
I'm using one side of LM358N as a comparator. A voltage divider using a photoresistor and a resistor connected at the inverting input, and a trimmer potentiometer at the non-inverting input. The datasheet says that Vcc can be as low as 3V. In my circuit Vcc=4V, and the output is 2.8V when high. I thought the IC is corrupted so I used another one... but it's the same. Is this normal since the supply voltage is low(4V)?