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how to feed sensors

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how to feed sensors

Postby l927 » Thu Apr 12, 2018 1:04 pm

Hi, this question is similar to one already asked soem time ago but I did not see the reply so I ask it again.
I would like to build a custom probe, for example to test presssure. There are plenty of cheap sensors available that are fed with 5V.
Do I need to use a signal generator to supply 5v and one channel to read the output signal or is it for some reason better to provide an external power supply to the sensor?
thanks
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Re: how to feed sensors

Postby Martyn » Fri Apr 13, 2018 5:53 am

The Signal Generator has not been designed to provide power for external sensors so you would need to supply any power externally.
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Re: how to feed sensors

Postby Meins321 » Sun Apr 15, 2018 1:23 pm

You could use a signal gen as a power source but it is not wise to do so...

usually the can't handle any power if your luky the are short circuit protected, but if you overdraw a signal gen the wavefor distorts and it doesn't look like it should on its output


just don't do it and buy a used lab powersupply can't go wrong with that
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Re: how to feed sensors

Postby l927 » Mon Apr 16, 2018 8:09 am

thanks guys, no problem, can assemble a 5v power supply pretty quickly.
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