ME 140L - PreLab Lecture 2

ME 140L - PreLab Lecture 2 - conduction band (orbital)...

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PreLabs Hand in PreLabs 2 up front You’ll need the DC Power Supply & Multimeter cables (Pairs of red and black). You won’t need the waveform generator cable (Black that splits into red & black).
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LAB 2: SENSORS University of Texas at Austin Department of Mechanical Engineering ME 140 L
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Lab Overview Introduction of Lab Components Resistors Light Dependent Resistors Thermistors Hall effect sensors DC motors with encoders
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Mechatronics Sensors Actuator (Creates Action) Sensor (Measures Action) Control (Considers Measurements, Decides Action) Signal Conditioning Signal Conditioning Action
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Introduction of Lab Components Resistors + 1 k (brown – black - red) (1) +1M (brown-black- green) (5)
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LDR (Photoresistor) Light Dependent Resistor 27 k LDR’s resistance changes when exposed to different illumination conditions Light R Electrons ‘jump’ to the
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Unformatted text preview: conduction band (orbital) Light R (LDR) I (LDR) I (LED) LDR (Photoresistor) VCC 6V LED1 LDR VCC 6V R1 1.0k LDR LED Different Circuit, Different Result Light Total R I (same V) (V=IR) Thermistor Thermistor A type of resistor with resistance varying according to its temperature Very small changes will measure mV +Vc Vout GND Thermistor Five (5) 1M in Series Same Ground Hall Effect Sensors Hall effect sensors Transducer that varies its output voltage in response to changes in magnetic field Mag Field Electric Field Charge Motion Charge Separation Voltage Hall Effect Sensors Watch Settings! (Ask about DC Coupling) Apply only 10.5V, not 25V LOOK AT COLORS! Introduction of Lab Components DC motors with encoders Rotary Encoders DC Motor RPMTest.Vi is on Blackboard....
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This note was uploaded on 09/18/2011 for the course ME 140L taught by Professor Staff during the Fall '09 term at University of Texas at Austin.

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ME 140L - PreLab Lecture 2 - conduction band (orbital)...

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