Simple 230Vac LED

148

03:15:13

You can use it to light a switch that controls outside home lights. Use a 1W resistor to avoid overheating problems. You can use the 1N4007 diode

published 10 years ago

SkeLe

10 years ago

The diode can be a 1n4007

hurz

10 years ago

The reverse voltage of more than 150V will destroy the LED. You can protect it with the diode by putting it anti parallel to the LED. The resistor must be able to transform at least 2W into heat. This is a low efficiency for just a 0.03W LED. Anyway keep it up!

SkeLe

10 years ago

Yes you're right but I've tested it and it worked for about half a day without problems. The antiparallel diode will occupy a "lot" of space if you want to put the led in an home switch

hurz

10 years ago

Have you made a Video? Would be very interessting!

SkeLe

10 years ago

No I didn't make a video but I've them in the house switches since 1 year and they still work. I can post a picture of the soldered components and an another one of the switches whit the led turned on

adrx

10 years ago

Use serial cap of about 220nF for reducing oscillations to approximatly +15/-15V. It can provide low current power supply, like needed in AC power presence indicator. Cap must be bipolar and support about an half more than your country Vac minimum. Add a zener diode to protect your LED.

SkeLe

10 years ago

Such as I have already sad this is the simplest and lighter full working circuit for power up a led with 230Vac. Nothing more. The result is as small as possible with only 3 components vs 4 or 5 components that occupy more space and that are also bigger than a resistor and a diode

adrx

10 years ago

As small as hazardous ..

adrx

10 years ago

1W ... What about safety? I m working in civil and military nuclear chain electronics. Less is better since security isn't required. You can make it work just adding a X1 type Cap, simply double up space for security isn't much

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