Emergency Light using 9 or 11watt energy saver lamp
I would like to get a circuit diagram which i can use to creat an emergency light so when power goes off then light comes on. It obviously must have abattery and must be rechargable as well
Re: Emergency Light using 9 or 11watt energy saver lamp
My dear can you tell me how much backup u want. you can build it up to 8hour back up with charging circuit & reverse battary buck boost voltage while running on battary. this may increase your backup time. and the circuit is very simple. if u really want to make it then reply, i will sent u a circuit.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If you are going to DIY and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed ACER monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also.
sohan472004, An "INVERTER CIRCUIT" lights-up the thin "cold-cathode-fluorescent-lamps" inside lcd monitors by taking a low-voltage dc voltage (10 to 20 volts dc) and converting it to a high frequency 30khz to 100khz ac voltage (500 to 1100 vac) The same principle of operation is used to light-up those new style, curlieQ,energy-efficient,screw-in CFL light bulbs. Only their tiny "electronic-ballast" circuit is called a "CONVERTER" circuit.
AC to AC Hope this helps. 12fixlouie
skeltonh, Have you connected your L170 to a different "known-good" PC that has ALL power-save and screen saver modes disabled? Have you connected an old monitor to your PC to see if it will act same way as the L170? 12fixlouie
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed Dell monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
Since you do not have sch diagram, It can be popwer supply, inverter circuits (bad transformer or transistors), bad lamps. Try take some measurement of the winding on the inv transformers first, you can use comparison reading, By the way, what is the make and model? too bad you do not have test lamps set to narrow down the problem first. If i know the model then I may be able to tell you more. See some pictures here for guide: http://s807.photobucket.com/home/budm/allalbums
andreson8151, Internal ac to dc power supply could be going into emergency shutdown having detected a fault condition with itself or the "cold-cathode-fluorescent-lamp" electronic ballast (inverter) circuit. You or qualified electronics technician will need to investigate. Read my fixya profile for a while. Then you will know all options open to you. You and only you can make decision on what to do. Some tech types DIY repair their units for under $10 if they have needed equiptment at their workbench. 12fixlouie
Perhaps your computer is hibernating instead of going into standby which takes a little longer to wake up from. While you are playing plugs and cables it give it enough time to come out of hibernation.
When the computer is in this mode the USB ports turn off which disables keyboard and mouse so the only way to wake up the computer is to press the power button on the computer itself.
One tell tale sign a computer is in hibernation is that the power light on the computer will slowly blink.