Output Devices

Group Assignment

Measure the power consumption of an output device.

Current

current

current

is a measure of the rate of flow of electrons through the circuit. To measure the flow of current, the circuit must be broken and the meter must be placed in the circuit such that the current flow goes through it.

The voltage across a component is a measure of the difference in electrical potential from one side of the component to the other and so the meter must be.

SERVO MOTOR POWER MEASURE

now, lets test the values from operating the servo with rotating 13- degree in both direction:
reading are still funny, and noisy, let's try to lower the moving speed and the load on the servo:
ok, more stable, so the servo is using 4.4 to 4.8 volt to rotate , let's take an average of 4.6 volt. What about current, when measuring current make sure that you are connecting the multimeter in the right way.. Series
From the start, with low load, the current is 0.08 Amp and then the servo load increases, the current reaches up to 0.30 Amp. With that, we can measure the power the servo use:low load: avg V = 4.6 and min amp = 0.08 A >>>>> so the power = 4.6 X 0.08 =0.368 W
high load : avg V X max amp =0.3A >>>>> then power = 4.6 X 0.3 = 1.38 W

RELAY POWER CONTROL MEASURE to run DC MOTOR ON OR OFF

here is the circuit connection:

Relay Power Control

here is the voltage used in the circuit when the switch is ON = 0v and OFF = 5V

Now, let's test the current, when theswithc is connected and the DC motor is on, current I = 0.17A at average , when the switch is off with no current passing in the circuit , I = 0A.

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