Demonstrate the circuits operation , Electrical Engineering

OBJECTIVES

Use an NXT to control the speed of a DC fan motor. You will us a potentiometer to set the speed and the second fan motor as feedback. Use the circuit from Lab 1 to control the output voltage level of a LM317 variable voltage regulator. This will require writing an interfacing program in NXT-G that will utilize the outputs and inputs for the prototype board and building breadboard circuits to interface. Refer to "HiTechnic Experimenter's Kit Handbook" by HiTechnic.

EQUIPMENT

1ea = NXT brick 1 ea = HiTech NXT prototype board 1 ea = R/2R ladder network

1 ea = breadboard with wire jumpers 1 ea = 411 Op Amp 2 ea = DC fan motors

1 ea = LM317

PROCEDURE

Part 1: Motor Speed Control

Use a potentiometer to set the speed of a fan motor.

1. The potentiometer will control the digital output of the NXT.

2. The circuit from Lab1 will control the output voltage level of a LM317.

3. The output of the LM317 will power a DC computer fan.

4. The potentiometer input and the output to the control circuit are to be displayed on the NXT's LCD.

5. Record the following values:

Min. Input Voltage: ____________ Max. Input Voltage: _____________

Min. Output Voltage: ___________ Max. Output Voltage: ____________

6. Demonstrate the circuits operation.

Part 2: Provide Feedback to control loading.

1. Mount the two fans together so that the first fan spans the second.

2. Use the output of the second fan as feedback to adjust the control voltage.

3. The potentiometer input, feedback input and the output to the control circuit are to be displayed on the NXT's LCD.

4. Record the following values:

Min. Feedback Voltage: ___________ Max. Feedback Voltage: ____________

5. Demonstrate the circuits operation by loading the output.

The written report will include the following:

a. A description of how the system is to work.

b. A description of the system's operational programs.

c. A copy of both the NXT-G programs used with programming annotations.

Posted Date: 4/2/2013 3:32:00 AM | Location : United States







Related Discussions:- Demonstrate the circuits operation , Assignment Help, Ask Question on Demonstrate the circuits operation , Get Answer, Expert's Help, Demonstrate the circuits operation Discussions

Write discussion on Demonstrate the circuits operation
Your posts are moderated
Related Questions

Q. An interface circuit consisting of R 1 and R 2 is designed between the source and the load, as illustrated in Figure such that the load sees a Thevenin resistance of 50  betw

(a) A digital product is being tested for compliance to CISPR 22 Class A requirements. The receiving antenna is placed a distance of 30 m away and is attached to a 50 V receiver w

SBI Subtract Immediate  with Borrow  Instruction This  instruction is  used to subtract 8 bit  data and  borrow from the  accumulator. The  result of  the operation is  stored

Explain Synchronisation and Parallel Operation Generation, transmission and distribution of electric power have to be conducted in an efficient and reliable way at a reasonable

Q. Split-phase or resistance-split-phasemotor? Split-phase or resistance-split-phasemotors: Split-phasemotors have two statorwindings (amainwinding and an auxiliarywinding)with

How is EISA bus different from ISA bus? The Extended Industry Standard Architecture (EISA): it is a 32 bit modification to the ISA bus. Since computers became larger and had wi

Draw layout of hydro-electric power plant and illustrate it briefly. Explain the following: a. Types of power plants b. Selection of power Plants

How to design band pass active filer? Any software avaialble

Some wire of cross-sectional area 1mm 2 has a resistance of 20Ω. Determine: a)  The resistance of a wire of the same length and material if the cross-sectional area is 4 mm 2 .