Integrated circuits

An audio amplifier has a frequency ......................................... from below 20 Hertz to over 20,000 Hertz.

• amplitude

• range

• boost

With ..................................... amplification, the output of one amplifier is fed into a second, whose output is fed to third and so on.

• broadcast

• compressed

• multistage

The quality of an amplifier depends on several factors, including freedom from ................................................. .

• resistance

• tolerances

• distortion

Using encoding software, data can be .................................... so that it occupies less space in memory.

• shown

• compressed

• given away

Carrier signals are used to ...................... radio and television programmes.

• boost

• translate

• broadcast

Amplifiers take the weak electrical current from a radio antenna and .............................. it so that audible sound emerges from the loudspeaker.

• boost

• compress

• transform

Electronic circuits are used for ................................. in telephone networks.

• switching

• carrying

• boosting

A pendulum is a simple mechanical oscillator that swings with a constant ................................................. .

• tolerance

• switching

• amplitude

In an amplifier the stronger current copies the waveform ................................................. of the weaker current.

• pattern

• signal

• effect

The ............................ of a device represent the maximum amount that it can deviate from a standard without getting damaged.

• tolerances

• features

• amount