Here is (I think) the circuit that forms part of my project: [image] The value of the resistor (2490 Ohms) is fixed. Vi is a variable voltage (driven by the Arduino PWM output - might be filtered but let's just assume it's a nice, clean DC voltage which will never be greater than 5V). What will V…

Confused as to what will happen with multiple voltages

system December 30, 2012, 3:00pm 5

What will Vo be

Vo = Vi.