L'utilizzo di un decoder esterno per la ricezione dei nuovi canali televisivi digitali, abbinato ad un televisore tradizionale analogico, comporta purtroppo un aumento dei consumi elettrici d'energia.
Infatti se il decoder televisivo si trova integrato all'interno dell'apparecchio televisivo, lo spegnimento del televisore (tramite interruttore) comporta anche lo spegnimento completo del sintonizzatore digitale, mentre questo non accade se il decoder si trova esterno al televisore.
Frequently it is possible to forget turning on the decoder even if the TV is off.
In this regard, we must also consider that many commercially available decoders are not equipped for on / off switch (except having to physically pull the plug every time I do not watch television).
So then most of the time the receiver remains in a perpetual state of "standby" to allow for immediate re-ignition by remote control.
In this regard, though the decrease power consumption when the electrical / electronics are located in stand-by, yet we know very well that there is never zero, continuing to consume 24 to 24 hours to no avail, 365 days a year a few watts (average 5 to about 10W, and beyond, depending on the particular model).
For example, if a house is left switched on stand-by throughout the year, two TV decoder, this results in unnecessary power consumption of about 87.6 kWh / year (ie about 20 € / year under current typical domestic electricity tariffs).
course at national, bearing in mind the large number of people who have or will equip you to external decoders, power consumption will be further increased and significant value (in the order of megawatts!).
This issue of a further increase in domestic energy demand will hopefully be only temporary until, gradually, television sets with cathode ray tube technology and no built-in decoder will be gradually replaced with new television technology LCD or LED with integrated Digital and lower power consumption (unless with screen dimensions).
However in order to reduce power consumption would be more appropriate to link all of our TV sets and audio / video / computer through a power strip with power switch of / generals (anti stand-by).
Additional energy savings could also be implemented by reducing hours of daily use, or better yet self-powered, if possible, from clean and renewable energy sources (see, for example, some possible applications of: http://www.wutel.net/fotovoltaico ) .
For more information on the control of power consumption instead see the following web link:
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