Adjustable low DC voltage trigger signal relay or SSR

Thread Starter

AACCSS

Joined Dec 1, 2020
1
Is there a relay or SSR that the trigger voltage is adjustable between 0.5vdc and 4.5vdc.
I want to use voltage from a automotive gauge to trigger a relay or SSR to activate a buzzer to warn the operator.
This would be for oil psi, oil temp, ECT, Trans temp, etc. etc.
 

eetech00

Joined Jun 8, 2013
2,183
Is there a relay or SSR that the trigger voltage is adjustable between 0.5vdc and 4.5vdc.
I want to use voltage from a automotive gauge to trigger a relay or SSR to activate a buzzer to warn the operator.
This would be for oil psi, oil temp, ECT, Trans temp, etc. etc.
Not a relay. But you can use a comparator or opamp to drive an SSR.
The trigger would be adjusted via a reference voltage to the comparator.
 
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