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Power isn't really dissipated in a circuit. It's energythat is dissipated. So the expression, 'power dissipation', really means is the 'rate of energy dissipation'.

So, when an engineer asks, "What is the power dissipation?", what he is actually means is "What is the rate of energy dissipation?"

What is energy dissipation? Well, work is done whenever a current flows through a conductor; this increases the internal energy of that conductor which, in turn, causes its temperature to rise. Because the temperature of the conductor is higher than the surrounding temperature, energy is lost to the surroundings through heat transfer.

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12y ago
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14y ago

Power dessipation is Static Power + Dynamic power

Static Power

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Power used by the gate when the i/p s are unaltered.only the leakage power is considered here

Dynamic power

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Power utilized by d gate when there is a change in inputs.

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13y ago

Heat sink, fans etc...

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Q: What is heat dissipation in a circuit?
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