N

NAND.

A logic function of X and Y that is true if either X or Y is false.

NAND CIRCUIT.

The output is logic 0 only if ALL inputs are logic 1; it is logic 1 if ANY input is logic 0.

Negative feedback

A feedback signal 180° out of phase with an amplifier input signal.

N-type semiconductor

A semiconductor compound formed by doping an intrinsic semiconductor with a pentavalent element. An n-type material has an excess of conduction band electrons.

Negative charge

A charge that has more electrons than protons

Neon bulb

Glass envelope filled with neon gas.

Neutral

Neither positive or negative.

Non-linear scale

A scale in which the divisions are not equally spaced.

North pole

Pole of a magnet out of which magnetic lines of force are thought to originate.

Norton's Theorem states that it is possible to simplify any linear circuit, no matter how complex or we can say Any network of voltage sources and resistors can be replace by a single current source in parallel with a single resistor.