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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
Thanks
Wayne

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  • mekpig Feb 06, 2008

    I have a problem of posting of the screen which with the demarage parrait clear and at the end of two second solidifies and becomes very white. And the same thing occurs when I always relight it.

  • Derek Lawson Feb 07, 2008

    AC Mains -----@ ][ |> /<|

    120V relay @ ][ | / |

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    AC Mains------@ ][ | / |

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    1 2



    Use 1 and 2 as a switch to turn your light on. When AC is applied, it keeps the light turned off. If you use 12 volts, the relay is available from Radio Shack. you wan the coil to pull in at 120VAC and the contacts rated for at least 12 volts, iif not 24.

  • Nobb Feb 07, 2008

    Hi Ini yes i would like the circuit. I want to make backup for emergency light between 9watt and 56watt lamps. For atleast 4 hours.Thanks

    Wayne

    wayne@qualityimports.co.za

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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.

Posted on Feb 07, 2008

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Hi Anonymous.
An emergency shut-off loop will almost always be set up so that the circuit is closed during normal operation, with a press of the emergency off button breaking, or opening the circuit. It's set up that way so that if a wire in the emergency circuit breaks, or gets disconnected, the system will shut down, rather than allow operation where the emergency off won't work.

Functionally speaking, if you only have two wires to the switch/button, then which way you connect them won't matter, since the switch will complete the circuit regardless of which way you flow the current. From a Code and consistency standpoint, one of the wires will be ground, and one of them will be hot. Most switches have leads indicating ground and hot on them, and you should be consistent with that. If nothing else, if someone else is later servicing or replacing the switch, also not knowing which wire is which, then they have less risk of mistaking a hot wire for a ground and getting zapped.

Depending on the setup, and whether it's AC or DC on the loop, you should be able to use either a voltmeter or an electricians hot-wire-detector to tell which lead is the hot lead.

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D

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Tip

SMART TRICKS AND TIPS FOR EVERY PHONE


WE ALL OFTEN FACE THE PROBLEM OF LOW BATTERY OF CELL PHONE.SO WHAT WE NEED TO DO IS TO EDIT OR CREATE A NEW PROFILE(<span style="font-weight: bold;">EMERGENCY</span>) IN WHICH WE SHUT DOWN ALL THOSE PROGRAM WHO CONSUME A LOT BATTERY POWER.WE HAVE TO SET AS FOLLOW<br /> <ol> <li>SWITCH <span style="font-weight: bold;">OFF </span>SCREEN SAVER</li> <li>CHANGE <span style="font-weight: bold;">RINGTONE </span>VOLUME TO <span style="font-weight: bold;">MINIMUM</span>.</li> <li>TURN OFF VIBRATION. <br /></li> <li>DO NOT USE ANIMATED PICTURE AS <span style="font-weight: bold;">WALLPAPER</span>.</li> <li>CHANGE <span style="font-weight: bold;">MESSAGE TONE</span> TO MINIMUM.</li></ol>WHENEVER WE ARE RUNNING ON LOW POWER JUST CHANGE YOUR PROFILE TO <span style="font-weight: bold;">EMERGENCY</span>.IN THIS WAY YOUR PHONE WILL CONSUME LOW POWER AND GIVES YOU EXTRA TIME. <br />

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Does the total power dissipated on the circuit increase, decrease, or temains the same when the switch is close.


In any circuit, when the switch completes the circuit power will be dissipated in the form of work or heat. Work is the energy used to perform a function, such as turning a motor. Heat is energy lost due to circuit resistance, and the power used to create it.

Think of an incandescent light bulb. When the switch is turned on, the bulb uses energy to create light by passing current through a high resistance wire, heating it up. Here some of the energy produced is lost as heat from the light bulb itself.

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The relay for the circuit will also have been removed so that what you are trying to do cannot be achieved. This relay is generally one of a matched pair specific to each build of vehicle and together they control the other emergency functions like alternating head light flashing etc. You will need to obtain a wiring diagram for the build of vehicle you are using and from this determine the location and coding for the relay(s) which have been removed.

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Typically the batery packs will need to be replaced periodically every 4-5 years, depending on the istallation location and ambient temperatures.

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