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11-08-2012, 03:32 PM
Post: #1
PC Based Speed control of DC motor using PWM Technique ppt
PC Based Speed control of DC motor using PWM Technique




.doc  PC Based Speed control.doc (Size: 123.5 KB / Downloads: 220)

Abstract

A pulse width modulator (PWM) is a device that may be used as an efficient DC motor speed controller or light dimmer. This project is a versatile device that can control DC devices which draw up to a few amps of current. The circuit may be used in either 12 or 24 Volt systems with only a few minor wiring changes. This device has been used to control the speed of the DC motor and to control brightness of an automotive tail lamp.
A PWM circuit works by making a square wave with a variable on-to-off ratio, the average on time may be varied from 0 to 100 percent. In this manner, a variable amount of power is transferred to the load. The main advantage of a PWM circuit over a resistive power controller is the efficiency, at a 50% level, the PWM will use about 50% of full power, almost all of which is transferred to the load, a resistive controller at 50% load power would consume about 71% of full power, 50% of the power goes to the load and the other 21% is wasted heating the series resistor.

A buzzer is provided for audio indication of DC motor speed variation and change in direction. Whenever the speed is increased / decreased, the system acknowledges by a short beep. This buzzer is driven by transistor driver circuit.
This project uses regulated 5V, 750mA & 12V, 500mA power supply. 7805 and 7812 three terminal voltage regulators are used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.
12-08-2012, 04:40 PM
Post: #2
RE: PC Based Speed control of DC motor using PWM Technique ppt
i willl cek make a reply soon i m planning to emerge this in my recently done project if any one know more simmiler practics like this plz make a reply
13-08-2012, 09:29 AM
Post: #3
RE: PC Based Speed control of DC motor using PWM Technique ppt
to get information about the topic "PC BASED SPEED CONTROL" full report ppt and related topic refer the link bellow

http://seminarprojects.com/Thread-pc-bas...pid=103864

http://seminarprojects.com/attachment.php?aid=31035
19-01-2013, 09:43 AM
Post: #4
RE: PC Based Speed control of DC motor using PWM Technique ppt
please send me the documents for speed control of dc shunt motor using pulse width modulation technique

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19-01-2013, 09:50 AM
Post: #5
RE: PC Based Speed control of DC motor using PWM Technique ppt
to get information about the topic "PC Based Speed control of DC motor using PWM Technique" full report ppt and related topic refer the link bellow

http://seminarprojects.com/Thread-pc-bas...hnique-ppt

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