NOT logic is formed by which device?

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Multiple Choice

NOT logic is formed by which device?

NOT logic means the output is the opposite of the input. A normally closed switch provides that inversion in a sensor/relay circuit: it conducts when the control signal is not active and opens when the control signal activates. By placing a normally closed contact in the path to the load, the load energizes only when the input is off, giving the inverted result. Using a normally open switch would pass current only when the input is on, not invert it. Two normally open contacts require both to close to pass, which isn’t a simple inversion. Two normally closed contacts would introduce a different behavior than a straightforward NOT function. So, a single normally closed switch best forms NOT logic.

NOT logic means the output is the opposite of the input. A normally closed switch provides that inversion in a sensor/relay circuit: it conducts when the control signal is not active and opens when the control signal activates. By placing a normally closed contact in the path to the load, the load energizes only when the input is off, giving the inverted result. Using a normally open switch would pass current only when the input is on, not invert it. Two normally open contacts require both to close to pass, which isn’t a simple inversion. Two normally closed contacts would introduce a different behavior than a straightforward NOT function. So, a single normally closed switch best forms NOT logic.

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