Economizer

It is clear that power consumption may be reduced if ancillary equipment is on only when the master unit is switched on. This is, for instance, the case in an audio system where the amplifier may be considered the master unit. It does not make sense to have the tuner, cassette deck and CD player on standby when the amplifier is switched off. This Is true also in computer systems, which, apart from the computer, normaUy contain at least a monitor, a printer, external drive, and, perhaps, a scanner. It would be very user-friendly and energy friendly if all those units were switched on and off together with the computer.