I have a weird situation.

I have a device that seems to output 5v. When the device is triggered the voltage drops to 2.5v. is there a relay that would trip with the voltage drop at all?

 

Can you restate the question, I am having difficulty understanding ....


Regards, Dana.

 

Welcome to AAC!

I have a device that seems to output 5v. When the device is triggered the voltage drops to 2.5v.

What is this device?

is there a relay that would trip with the voltage drop at all?

Don't understand what you're asking.

 

As below, connect emitter to +5V, connect 5V relay coil as the load, and make R=390Ω

 

Sorry everyone, I'm new to this. I have a sensor that apparently outputs 5v on the line. When the sensor is tripped the voltage drops to 2.5v. i have a noise generator that plays audio noise. I want that noise to not play, but when the sensor is tripped the audio is then passed. I'll see if I can attach an image...

 

OH, I wonder if this would work? https://www.amazon.com/gp/product/B07HH1PQSM/ref=ox_sc_act_title_2?smid=A1OB26G8TSLEZQ&psc=1

 

Strange sensor output, 5.0 volts or 2.5 volts. Anyway you can roll your own comparator or use what you linked to. Shop wisely on Amazon as I see the same module for $15.80 USD and you really only need a single channel and can get a two channel comparator module for about $14 USD. Actually modules like this should be available for less but will it work for what you seem to want? Yes.

Ron

 

I have a weird situation.

I have a device that seems to output 5v. When the device is triggered the voltage drops to 2.5v. is there a relay that would trip with the voltage drop at all?

WE are given NO description of what that device might be, we are given no description of what "triggered" does, and we are given no description of what, if any, load is being powered.
With no more description that what is given the very best answer possible is a poor guess. I am not a mind reader, nor do I posess telepathic abilities. For any worthwhile answer we need a lot more description.