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TV Question

  • 15-04-2003 2:04pm
    #1
    bobsmith833
    Closed Accounts Posts: 126 ✭✭


    When I turn off the television, is it OK to leave it on "Stand-by" mode rather than switching it off at the set?

    Somebody once told me that stand-by doesn't actually turn it off at all, but simply 'diverts' the electron beams off to the side of the screen. On the other hand, it sometimes takes feckin' ages to warm up after a stand-by.

    Any ideas?


Comments

  • #2
    tman
    Closed Accounts Posts: 16,339 ✭✭✭✭tman


    afaik most tv's still use something like 75% of the power when you put them in standby, it's worth turning it off just to conserve electricity really


  • #3
    mooman_00
    Closed Accounts Posts: 933 ✭✭✭mooman_00


    leaving them on standby does use a lot of electricity.It also damages the tube afaik, or so a sony technician led us to believe after a 2 year old 32" triniton's tube decided to not bother its ass workin anymore......either that or he hadn't a clue what happened and used the old 'baffle them with fake technical wizardry' trick


  • #4
    byte
    Moderators, Regional North West Moderators Posts: 19,159 Mod ✭✭✭✭byte
    byte


    However these trends do not have an impact on standby power consumption of TVs. Standby power consumption of TVs varies from 0.1 W to 15 W, with an average value between 6 and 7 W. Since TVs do not yet have a standby-active mode - which means that the TV is able to communicate with an external source - it is relatively simple to reduce standby power consumption of TVs to (below) 1 W. The only components that have to be powered in the standby mode are an infrared receiver for the remote control signal, a (mandatory) LED to indicate the standby mode, and an IC to generate a 'wake-up' signal. This can be powered directly from the mains by a simple bridge rectifier. Also options exist where a separate standby power supply is used. This power supply can be designed for a high efficiency at a small load. Using the main power supply also in standby mode results generally in a lower efficiency because the power supply has to be designed for 2 different working points, e.g 5 W standby and 60 to 90 W in the on mode.

    Taken from here


  • #5
    Borzoi
    Registered Users, Registered Users 2 Posts: 2,876 ✭✭✭Borzoi


    So taking the acg figure of 7W, standby for a whole day will cost:
    7W*24hr*.12c/kWhr = 2c per day

    Cheap enough, however the main reason for switching televisions off at night was to prevent fire risk, something that has decrease with more modern televisions


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