Outputting a voltage for a required time

[Emily_UoL]

I have a labview circuit integrated to a myDAQ. In the labveiw circuit I wish to output a voltage for ONLY a required period of time (eg 10 seconds) then switch off again, before running the circuit again. I understand how to loop the circuit, but not how to only apply the voltage for a certain length of time.

Thanks for your help.

[apok]

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@Emily_UoL wrote:

I have a labview circuit integrated to a myDAQ. In the labveiw circuit I wish to output a voltage for ONLY a required period of time (eg 10 seconds) then switch off again, before running the circuit again. I understand how to loop the circuit, but not how to only apply the voltage for a certain length of time.

Thanks for your help.

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for an elapsed time after the Vi has started...use the "elapsed time.vi" in the timing pallete and if it is for a specific time in the future? use the get time vi functions....

do a generic forum search on "time," your question has already been answered there.....

[Emily_UoL]

Thanks for your help but I'm not sure you understood what I was asking. I understand the elapsed time, but isn't that just waiting before it runs? To go into a little more detail ...

I need an ouput voltage for 10 seconds only. I then need the voltage to return to 0V, then start the circuit again.

[crossrulz]

Write your output, wait the designated amount of time, write a 0 to the output.  Put everything into a loop.  Sounds like you have all of the peices.  Where are you stuck putting them together?

[apok]

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@Emily_UoL wrote:

Thanks for your help but I'm not sure you understood what I was asking. I understand the elapsed time, but isn't that just waiting before it runs? To go into a little more detail ...

I need an ouput voltage for 10 seconds only. I then need the voltage to return to 0V, then start the circuit again.

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sounds like you need a simple state machine...tells us how you want the user to interact with the program, step by step and case statement transitions. better yet....post your code