Sounds like you have recessed cans and Halogen spot or floods. First check with the manufacturer to verify that the bulbs you are using can be used in that fixture. If the glass is separating from the metal fixture, it sounds like the bulb is not appropriate for the socket in some way. Most of the recessed cans have a thermal shutoff. It sounds like yours is tripping. This is a good sign that there is something wrong with your bulb/can combination. If you are using the large bulbs, then it might be possible that you are either using too high a wattage, a halogen bulb where you shouldn't, or a bulb that is physically too large to allow the correct amount of air circulation to keep the lamp cool. Marc Reinig System Solutions -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Robert E. Griffith Sent: Monday, July 16, 2001 9:15 AM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [EE]: Bulb Life -- Burned out bulb resurected I have been having a problem with the light fixture in my kitchen going through bulbs fast (bulbs lasting about a month). This fixture uses the more expensive, large diameter bulbs. When the last one went out, I did not replace it right away. Several days later, it came back to life! Since then, it has gone out several times (for 2-7 days) but has, so far, always come back to life. I have measured the voltage in the socket during one of the bulb's dead periods and verified that there is power in the socket (117v). I imagine that somewhere in the bulb is an intermittent short. The room is air conditioned so temp does not vary that much (except when the bulb is on:) Another strange thing: Three times now, when other bulbs have gone out in this fixture, the glass bulb separates from the metal socket while the light is on and drops to the table below! So I guess my question is "Should I be concerned that this fixture is haunted?". Should I call Bill? (Maurry - not Gates) --BobG -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Jinx Sent: Saturday, July 14, 2001 9:54 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [EE]: Bulb Life > Ha ha! They don't want to educate you, they want > to keep you as stupid as possible and buying as many > bulbs as possible. Evil empires are like that! ;o) > -Roman Appropriate then that this is posted under an [EE] Evil Empires tag. What truth is there really to planned obsolescence ? Any proven examples ? Light bulbs and tyres spring to mind as products widely believed to be "improvable" btw, as I travel around I pop into the odd electrical wholesaler and always leave a copy of my bulb life web page and some comments from the list (anonymous of course) about extending filament bulb life. Had a few "ooohs" from counter staff as they realised the implications -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads