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fix time switch

hi
i am first year student please help me making a two port  switch that allows power supply for a fix time

: i want to make a circuit that allows a motor to run for only 2 or three second when given signal and then run for 2 or three second in backward direction ( opposite current )
when again given signal....

thanks a lot in advance ...
priyank

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Hello Priyank,

 

There are a variety of options available for controlling motors.  Most any of National Instruments Data Acquisition (DAQ) Boards can supply the voltage necessary to control a motor through an analog output; the main concern is the current source.  Most of these analog outputs provide a maximum of 5mA of current which is not sufficient to power most motors.  If you already have a DAQ board then one solution would be to use an external amplifier and power supply to amplify the signal from your DAQ card.

 

Another more straight forward solution would be to get a Motion Control system.  This option would be more expensive, but it is intended for this use so it would be easier to setup and program.

 

If the above information isn't detailed enough for you it would be helpful to know more about your setup in order to provide more direct suggestions.

 

1.  Do you already have a motor?  If so, what are the current and voltage requirements of your motor?

2.  Do you already have a data acquisition product you want to control the motor with?  If so what is the model number of this board?

 

Feel free to include any additional information about your application that you think may be relevant to choosing a setup.  The more information you provide the better.

 

Have a great day!

Brooks
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