Variable power supply Mydaq

[stefan1988]

Hello im thinking of buying a Mydaq but im not sure if I can use for what I need it.

In class IM not allowed to use the Ni-Elvis 2 board unless a TA is present and if i run out of time theres no way for me to make up the lab.

so i have a breadboard at home from radioshack(electronics learnig kit) and the volatges go up in increments of 1.5 to 9v.
but in my lab i need to test the following voltages -5v,-10v,0v,5v,10v

from my research it seems i need a variable power supply so i can control the voltages going in into the board.i know with the elvis 2 board we can switch the voltages right from the computer.

so my question is does MYDAQ havea VPS where i can control the voltages from -10 to 10V in increments of 5? and im able to specify the increments of voltage?

also is it possible to get MyDAQ just the interface without the software?

thank you

[Anthony_F]

Hello stefan,

The myDAQ has dedicated voltage outputs of +5v, +15volts and -15volts.  The myDAQ does not have a variable power supply and when connecting the myDAQ to ELVISmx the variable power supply option disables.

What functionality of the myDAQ are you trying to use without the software?

[Mark_W]

Stefan -

Using the Analog Output channel, you can output a voltage between -10 and 10 volts and then vary the voltage.  I'm including a link below of the DC level instrument that generates a DC voltage.  You can set the voltage control to vary the voltage from +10 volts between -10 volts.

DC Level

https://decibel.ni.com/content/docs/DOC-16040

[Anthony_F]

Thanks for that link Mark W, thats' a great idea for low current situations!

Looking at page 37 of the myDAQ user manual here, it say that the analog output provides up to 2mA of current.

The ELVIS prototyping board can source up to 500mA of current.

[stefan1988]

thank you so much sorry i took so long to answer classes been keeping me really busy.

it works 🙂