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Reverse Polarity Detection

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SHWETHAREDDY

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Hi everyone,
I have a circuit that indicates the polarity of the each Actuator,
Correct polarity-Buzzer ON
Reverse polarity(atleast one)-Buzzer OFF.
I need this is to be reversed i.e.
Correct polarity-Buzzer OFF
Reverse polarity(atleast one)-Buzzer ON.
Here i have connected 4 Actuators in parallel and 4 Buzzers in series.
Operation of Actuator is controlled by ECU.

Thanks.
 

how buzzer is driving?? can any inversion logic applied to buzzer driver?
 

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