I'm just playing around with a TL081 to try and learn how to use them. I'll trying to use it as a simple comparator and I can't figure out why this is happening.
I'm using a 6V PSU. The Inverting input of the opamp connected to the middle point of 2 10K resistors. So the inverting input is getting 3V and all times.
I have the non-inverting input connect to the wiper of a 100K pot.
VCC+ is connected to 6V and VCC- is connected to Ground.
I have the output connected to a Green LED with a resistor in series.
Whats happening is, the only time the LED is off is when the wiper is in the middle. If I turn the knob to either far end(6V or 0v) the LED is lit. Why is this happening?
I'm using a 6V PSU. The Inverting input of the opamp connected to the middle point of 2 10K resistors. So the inverting input is getting 3V and all times.
I have the non-inverting input connect to the wiper of a 100K pot.
VCC+ is connected to 6V and VCC- is connected to Ground.
I have the output connected to a Green LED with a resistor in series.
Whats happening is, the only time the LED is off is when the wiper is in the middle. If I turn the knob to either far end(6V or 0v) the LED is lit. Why is this happening?