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Semiconductors

Any solid material with electrical conductivity due to electron flow (as opposed to ionic conductivity) of a magnitude between that of a conductor and that of an insulator.

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Semiconductors > Test equipment

printed wiring assembly (PWA)
Semiconductors; Test equipment

The generic term for a PWB after all electrical components have been attached.

printed wiring board (PWB)
Semiconductors; Test equipment

A part manufactured from rigid base material upon which completely processed printed wiring has been formed.

pulse-width modulation (PWM)
Semiconductors; Test equipment

Often used in digital audio systems. As its name implies, it is applicable to pulse waveforms only. With PWM, the modulating signal causes the active pulse width (duty cycle, ...

PCI extensions for instrumentation (PXI)
Semiconductors; Test equipment

A rugged PC-based platform for measurement and automation systems. PXI combines PCI electrical-bus features with the rugged, modular, Eurocard packaging of CompactPCI, and then ...

quiescent point
Semiconductors; Test equipment

(Q point) - A point on the DC load line of a given amplifier that represents the quiescent (no signal) value of output voltage and current for the circuit.

quality factor (Q)
Semiconductors; Test equipment

For BAND-PASS and BAND-REJECT filters Q = Fo/BW. Note that Fo is the GEOMETRIC CENTER and BW is the BAND WIDTH.

amplification factor (Q)
Semiconductors; Test equipment

The amount of mechanical gain of a structure when excited at a resonant frequency. The ratio of the amplitude of the steady state solution (amplitude at resonance) to the static ...

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