What is the live zero and dead zero

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What is the live zero and dead zero..

Answer / praveen

0 milliamp is dead zero and 4 milliamp is live zero

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What is the live zero and dead zero..

Answer / shibli nomani

Live0-At 0 input ,output has some value e.g at 0 tx has 4mA.
Dead0-At 0 input, output has Also zero.

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