Rob_Lab_0_0

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            Due Wednesday 2/3/10

1)        Visit and register with Evidence of a successful login will be (15 pts.)

2)        Find the largest manufacturer of electromechanical relays. Visit their site. What is the device

shown in the left most graphic? A link would be nice. (15)

3) UnZip this file: Report any broken links. (15)

4) Who invented the relay and when? What are some uses of relays? Find an image of

a Solid State Relay and either draw it or capture it. Compare and contrast the Solid State Relay with

the Electromagnetic Relay. (35)

Lab 1 Here

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Due Wednesday 2/12/09

1) Some digital to analog converters use resistive networks. The two main resistive networks used are the R2R ladder and the weighted resistor types. Scour the universe and find representations of both that use a summing inverting op amp to sum the currents to produce the D/A output. Draw same. Both types must produce the same output for inputs of four bits. Inputs should be controlled by switches. (40)

2) Proper citing of website references can be found here.

3) Find two Microcontrollers from different manufacturers that have built in DAC or ADC channels. Give manufacturer, and model numbers, and data capability. (20) Properly cite sources.

D/A lab 2

A/D lab 3

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Quiz 4

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Sensor Lab 4

        Quiz 4 (65 pts.) Due Friday, 3/27/09 Submit to profflynn@gmail as a .doc with proper citations.

1)    What is the the Coriolis effect. What type of sensors would use this phenomenon?

2)    What is the Hall effect? What type of sensors would use this effect.

3) What is the Seebeck effect? What type of sensors would use this effect, what are some manufacturers, and                 what device would use this effect?

4)    What is the opposite effect to the Seebeck effect? Why would this effect be used to overclock                                     microprocessors?

5)    What is the Piezo electric effect? Who discovered it and when? What type of sensors would use this magic?

6) A potentiometer is connected to 18 VDC and ground . The span from end to end is 350 degrees.
   What is Eout at the wiper to ground for angles of 30 degrees, 225 degrees, and 1.5 radians?

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Pre-lab activity for the Sensor Lab worth 25 % of the lab. Due date TBD.

1) Obtain the datasheet for an LM 311 precision comparator op amp.

2) Study the datasheet and design a circuit so that the output of the op amp goes high when the temperature of a NTC thermistor is increased. Build and verify the circuit in Multism ® by substituting a potentiometer in the circuit. This is an acceptable thermistor. Go here:

3) Add ciruitry to your design to have the detector turn on a 120 V lamp using a transistor and a relay.

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Stepper Motor Lab

Pre lab activity for the Stepper Motor Lab, sequester yourselves in Room 212 and build the circuit in Multisim

shown in the lab above. Substitute 100 ohm resistors for the motor coils at the left of the schematic.

Simulate the circuit in Multisim and verify its operation. After successful simulation, proceed to wiring the

circuit in Room 203.

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Basic Stamp Lab 1

Basic Stamp Lab 2

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Presentations

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Done