Newbie level 2
For my project, I need to evaluate two voltages and output a voltage depending on which one is higher. To accomplish this, I'm using two comparators on the LM339, one with V1 at the + and V2 at the - and one with V2 at the + and V1 at the -. I connected all unused pins to ground, the GND pin to ground, Vcc to 2.0V, and made V1 2.0V and V2 2.5V. I connected a buzzer from 9v to output on each, and they both went off. I'm confused because only one of the buzzers should go off. Any ideas where I went wrong?