I need to perform a ground offset test. Ground offset = 1V Please tell me whether my approach is correct.
Typ Input power supply to the circuit is +12V Typ Load current for the circuit is 0.5A
So, I connect the power terminal of the power supply to positive input of the circuit. I, then, connect a 2ohm resistor between the ground of my power supply and negative(return) terminal of the circuit.
2 ohm because, V=I * R. To have, 1V drop between negative and ground, 0.5A*2Ohms = 1V.
So, If i place a 2 ohm resistor between the ground of power supply and the negative terminal of the circuit, I will have achieved a 1V ground offset between the input and the return terminal of the circuit.
So, Positive terminal of the circuit will have +12V and the negative (return) terminal of the circuit (top of the resistor connected to negative terminal and bottom of the resistor connected to negative terminal of battery)will have +11V
Am I right?
Please provide a connection diagram to help