Black Box: Input and Output

To begin our investigation we will treat the servo controller as if it were a black box, where all we can observe is the electrical input (DC voltage) and mechanical output (position of the rotor).

• Vary the input voltage (DC Signal) between 0 and 10 volts, and observe the behavior of the servo's rotor. Estimate the full range of the rotor's motion in degrees and convert the angle to radians. Using the fully clockwise position as , record voltages and angles for several positions.
• Connect the ammeter between the (unmounted) power supply and the servo controller +5V input. Vary the input voltage (DC Signal) between 0 and 10 volts, and observe the amount of current drawn from the (unmounted) power supply. Can you draw any conclusions about the consumption of power by the servomotor?