how to feed sensors

Post discussions on projects you are working on
Post Reply
l927
User
User
Posts: 2
Joined: Thu Apr 12, 2018 12:43 pm

how to feed sensors

Post by l927 »

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

Martyn
Site Admin
Site Admin
Posts: 4491
Joined: Fri Jun 10, 2011 8:15 am
Location: St. Neots

Re: how to feed sensors

Post by Martyn »

The Signal Generator has not been designed to provide power for external sensors so you would need to supply any power externally.
Martyn
Technical Support Manager

Meins321
User
User
Posts: 2
Joined: Mon Jul 17, 2017 7:35 am

Re: how to feed sensors

Post by Meins321 »

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

l927
User
User
Posts: 2
Joined: Thu Apr 12, 2018 12:43 pm

Re: how to feed sensors

Post by l927 »

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

Post Reply