What is a 5-pin automotive relay?
5-pin automotive relay

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Science, Specialty, Physics
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Professional Development
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Hard
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1.
FLASHCARD QUESTION
Front
Back
A 5-pin automotive relay is an electromechanical switch used to control a high-power circuit with a low-power signal, typically found in automotive applications.
2.
FLASHCARD QUESTION
Front
What are the coil pins in a 5-pin automotive relay?
Back
The coil pins are the two pins that activate the relay when a voltage is applied, usually labeled as 85 and 86.
3.
FLASHCARD QUESTION
Front
What is the resistance range between the coil pins of a 5-pin automotive relay?
Back
The resistance between the coil pins (85 and 86) should typically read between 70 - 120 ohms.
4.
FLASHCARD QUESTION
Front
What is the function of pin 30 in a 5-pin automotive relay?
Back
Pin 30 is the common terminal that connects to the power source.
5.
FLASHCARD QUESTION
Front
What is the function of pin 87 in a 5-pin automotive relay?
Back
Pin 87 is the normally open (NO) contact that connects to the load when the relay is activated.
6.
FLASHCARD QUESTION
Front
What is the function of pin 87a in a 5-pin automotive relay?
Back
Pin 87a is the normally closed (NC) contact that connects to the load when the relay is not activated.
7.
FLASHCARD QUESTION
Front
What is the resistance between pins 30 and 87 when the relay is activated?
Back
.5 ohms or less.
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