LED Night Light / Mood Lamp / Bulb / Plug on AC Power Mains

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About: "May the good belong to all the people in the world. May the rulers go by the path of justice. May the best of men and their source always prove to be a blessing. May all the world rejoice in happiness. ...

This instructable is inspired by Tool Using Animal ( https://www.instructables.com/id/LED_Lightbulb/ ).

He has used two LEDs for his project and he has used a light bulb. We shall use only one LED and a male plug (pin) instead of an old light bulb.

Many of us want to make a simple night light or a mood light but dont want to run it on batteries or DC power sources. Here is a simple AC Mains solution for the LED newbies.

Caution: When dealing with power mains, safety cannot be understated. pl use your discretion before performing anything on your own for the first time.

Ok, so all the things we need:

1. One LED (10 mm or better still, one super bright led)
2. one 1000 Ohm 1/4 W Resistor for 110V AC Mains (We are on 220 V systems here in India - so use 1000 ohm 1/2 watt resistor)
3. One 0.47 uF, 250 Volt Capacitor for 110V AC Mains (We are on 220 V systems here in India - so use 0.22 uF 400 v capacitor)
4. One male socket plug / pin (With screws so that it can be opened and LED assembly can be fitted in)
5. Solder - optional (?)

Comments and mods welcome...

Supplies:

Step 1: Steps

Connecting the stuff:

For 110V Mains: (For 230V Mains, resistor & capacitor configs, as above)

1. Connect the 1000 ohm 1/4 W resistor to the longer leg (anode) of the led.
2. Connect the 0.47 uF, 250 volt capacitor to the shorter leg (cathode) of the led / super bright led.
3. preferably, solder the stuff
4. Now stick the assembly in a male socket plug / pin.

5. Finished.

This is your night light / mood light / low voltage power saver - whatever you want to call it.

You can use a red led to improve night vision.

You can use a super bright led for enhanced brightness.

Comments and mods welcome.

Dec09 UPDATE:

For other simple LED projects, see https://www.instructables.com/id/How-to-make-LED-projects/

For Light sensor flashlight, see https://www.instructables.com/id/Sensor-LED-Flashlight-9v-with-light-dark-detec/


reg
ketan

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    6 Discussions

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    qwerty156

    7 years ago on Introduction

    Hey!

    I pulled out a capcitor from one of those cheap chinese flashlights that charge from ac
    It looks a bit like this
    http://www.surplus-electronics-sales.com/Zencart/images/products/120-1002%20p1%20radial%20mylar%20cap.gif

    Do you think i should give it a try?

    3 replies
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    pandyaketanqwerty156

    Reply 7 years ago on Introduction

    Unable to see the pic... if you could write the specs... They should be 0.22uF and 400 VAC rating....see my other I'Bles for more pics of the capacitor & resistor...

    It depends on what u want to do! Blow up a few LEDs on ur face or make a light! ;-)

    reg
    ketan

    0
    None
    qwerty156pandyaketan

    Reply 7 years ago on Introduction

    hahaha!
    i tried it and it worked (the specs are unknown so i used a extension which had a fuse.

    The resistors in question over heated and started smoking. i used 2 2.7kOhm resistor in parallel.

    Is that normal?

    0
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    pandyaketanqwerty156

    Reply 7 years ago on Introduction

    If you have used AC circuit, pl check:

    https://www.instructables.com/id/Worlds-Best-Light-Bulb-using-wire-connector-no-/

    If you have used DC circuit, pl check components here:

    https://www.instructables.com/id/Worlds-best-LED-light-bulb-Part-2/


    1kOhm should do, but ur wattage rating is not 1 watt, it would be 1/4 watt and hence the overheating problem. I think you should use 1 watt rating resistors for AC Mains circuits.

    More importantly, do more math before experimenting directly with AC Mains. (I'Bles site would like to have u around for much longer, i am pretty sure! So pl do us all a favour!!)

    reg
    ketan

    0
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    Dipankar

    9 years ago on Introduction

    You should use .22uF 400 volts capacitor and 1/2 watt resistor for SAFETY sake.
    See my other Instructables for direct AC line input.