On 07/12/2013 04:02 PM, Joe Zeff wrote: <>
This is why an incandescent lightbulb is much more likely to fail when you turn it on than at any other time.
this is mainly caused by the 'inrush current" when bulb first has voltage applied. http://en.wikipedia.org/wiki/Inrush_current
I've read stories about bulbs that have been working for decades because
> they've never been turned off. i have a dual lamp fixture in kitchen that has been on a dimmer control from back in late 80's. neither of the bulbs have burned out because the dimmer is a 'zero cross on' type and because the dimmer always starts out at minimal voltage, there is no huge inrush current. as for leaving system power up, 'boinc' is one very good reason. other reason is that you eliminate heating and cooling of system and thereby causing early break down of components from inrush and dirtying contacts when they expand and contract between each other. as for leaving equipment turned on 24/7, systems stabilize and maintain their accuracy this way. granted, you electric bill will be increased, but i believe increased cost is worth the cost of down time and repairs. -- peace out. in a world with out fences, who needs gates. sl6.3 linux tc.hago. g . -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
