Battery Powered 4W E27 LED Bulb: Portable 34W Equivalent, 32mA Current & Small Power Source

Question

Hello, as in the subject. I would like an ordinary LED bulb like this:

Power: 4W
Cap: E27
Current: 32mA
Equivalent: 34W

powered by batteries or some other portable and small power source, but I don't know how to go about it.

koczis_ws · Answer

LED bulbs are designed to be powered with 230 V alternating current. If you want to power them from batteries, you need to use a DC / AC converter. Of course, you can also dismantle the lamp and connect to the rectifier bridge where there is already direct current, but this is probably not the way.

elektryku5 · Answer

The easiest and maybe cheapest version will be to use the 12V version and also a power supply of similar voltage (e.g. Li-ion cells, gel battery).

It is more profitable than converting the current lamp or adding an inverter.

kortyleski · Answer

Nonsense. It will work on DC too. But it's better to look for a 12V LED lamp. Easier to power up.

Anonymous · Answer

Maybe a colleague should explain the circumstances for which he is trying to build a flashlight with a 230V LED lamp?

koczis_ws · Answer

First, see what is the internal diagram of the LED lamp on AC 230 V and then write posts. I don't know how you want to pass DC current through a capacitor? PS. A small fix. There is a parallel resistor discharging the capacitor, but its resistance of several hundred kilohms would require a much higher voltage to ensure the right current and I do not know if it would withstand power.

kortyleski · Answer

Indeed, I did not consider the cheapest ones without a converter. Which does not change the fact that powering the 230V lamp from the battery is pointless

koczis_ws · Answer

Maybe let the author explain why he needs such a thing and then maybe it will be easier to advise something.

kosa_pol · Answer

Thank you for your interest in the topic.
The woman thought that such an "Edison bulb" would be a great decorative element. The idea is that in the "box with cables" he will insert a light bulb, and it will look beautiful ...

Anonymous · Answer

Maybe a 24V lamp will be fine then? There are also versions for 12V, but they have wires instead of threads, so you will need a different holder (G4). Look for 24V E27 AC / DC LED lamps.

koczis_ws · Answer

If I'm not mistaken, nobody even dreamed about LEDs in Edison's time And I do not recommend the real Edison bulb because it gets very hot. Or maybe a fluorescent lamp, once I remember there was even a self-assembly kit for powering the fluorescent lamp from a battery.

elektryku5 · Answer

Such a lamp is also called LED filament, I do not see a 12V version in domestic offers, so it is worth checking on foreign websites. But does this ornament need to be battery powered? It will be necessary to charge it a bit often, unless it is to shine for a while, if you use Li-ion cells, you will also need a protection (you can buy ready-made PCBs).

Battery Powered 4W E27 LED Bulb: Portable 34W Equivalent, 32mA Current & Small Power Source

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