My school task was to simulate a 4BIT DAC converter in multisim. Im supposed to simulate the circuit when the switches are on/off and measure the output on the op amp.
I think the circuit works fine but I dont quite understand why the voltage is negative. I checked the poles and tried to invert reinvert it but nothing works. Is it standard for it to be negative? Or?
If my circuit is built wrongly please tell me how to fix it
Thank you very much