How much do electrical items use on stand-by mode?

Question

i.e. does it vary between items - % use and real use?

Answer 1

The issue about standby mode is not what the instantaneous consumption is, it is the amount of time that it remains on standby. In real terms standby on a telly may use only 5% of the power used when it is on. But say you watch telly 2 hrs a day, and leave it on standby for the other 22, you have used 1 x 2 power units watching it (=2) and 0.05 x 22 units in standby (=1.1)
If this example is correct, then 1.1 / 3 (37%) of the units your telly consumes are consumed in standby, which is a lot more than the 5% would seem to indicate. So turn 'em off

Answer 2

It varies with the item and how much time is allowable for return to 'operational' mode. If it has to be 'instant on' then something like a monitor will have to keep the CRT filaments hot. But if it can take a few seconds to 'wake up' then it doesn't need to 'waste' energy by doing so.

In a good design (and no 'instant on' requirements) the stand-by power may only be as little as a few milliwatts.


Doug

Answer 3

It varies by the difference of the consumption of the included operational components and the device in question. It could be very small like an LED or substantial like a TV which keeps the tube filament hot to turn on faster.

Answer 4

Depends on the appliance. Generally, most modern TV's, HiFi's, DVD recorders etc. use only a very small fraction of power when in standby mode. Most of this power is due to losses in the low voltage conversion process. When environmentallists say that leaving appliances in stand-by mode uses up lots of energy anyway, they are wrong and I have done tests to prove it (I think they are refering to very very old appliances). PC's on the other hand use up far more power in stand-by mode as most of the power supply unit is working in full force. Of-course, turning appliances off saves energy and is the best way to be environentally firendly, but to give you an idea of how much energy you save leaving a plasma TV in standby mode:-

For a 50" plasma (yes I have one!), normal operation = 500W
In standby mode power = 5W (that's 1% of the normal operating power). Turn it off, and ofcourse power consumption is zero. But to be honest, most new appliances are designed to be kept on stand-by. You'll wear the switches out turning them on-off all the time!

Answer 5

It varies between items but standby usually needs around 60% of electricity it normaly uses when switched on.

Answer 6

capacity is a function of modern. in case you quit the flow of modern you will quit the flow of capacity. for this reason, if the applying is switched off the capacity would be off and there will be NO non-quit pull of capacity. do no longer unplug your lighting fixtures furniture at night! in basic terms turn the change to off. Your clock radio and cable container consumes some capacity to maintain the clock going, and there's a modern (capacity) draw for stand by capacity of mode, in spite of the indisputable fact that it incredibly is not any longer very a lot. nevertheless somewhat is somting. Your laptop in hibernate mode consumes somewhat capacity it incredibly is advisable to coach it off at night. Use uncomplicated experience and undergo in concepts that various little issues do upload up.

Answer 7

apparantly by turning off appliences completely you can save up to £80 a year. PC's however are efficient on stand-by and use very little electricity in that state.

Answer 8

alot...i found that i saved nearly £100 a year just by turning the telly of at night

Answer 9

More when they are on so turn them off

Answer 10

until you get the power's bill!