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Brownout at my hostel: LED has gone mad, halogens barely glowing, T5 glowing slightly dimmer

Brownout at my hostel: LED has gone mad, halogens barely glowing, T5 glowing slightly dimmer


What causes the LEDs to behave such with the low voltage on their phase?

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Album name:dor123 / Videos
Keywords:Lamps
File Size:7168 Bytes
Date added:Sep 13, 2016
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ace100w120v
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Sep 13, 2016 at 12:27 PM Author: ace100w120v
Yikes, that looks irritating to be working under!
Ash
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Sep 13, 2016 at 12:51 PM Author: Ash
LED drivers (of non integrated lamps) are a switching power supply, with constant current regulation on its output. The circuitry that controls the switching device operation needs its own low voltage supply to work. This low voltage is stabilized with a small capacitor. When starting, there is nothing available except the incoming line voltage, so the capacitor is charging from that through a big resistor (that is why the delay from switch on to light). After it started, it keeps charging on current derived from the driver's main power conversion

When the line voltage is out of spec, it starts fine (even with the brownout there is still enough voltage to charge the capacitor in the starting mode), but as soon as the circuit starts to switch and put out power on its output (and when switching, the control circuit draws more power then when starting), it comes out that it can't keep up due to the low line voltage, the control circuit's supply drops and it goes out. Then the starting begins again
dor123
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Sep 13, 2016 at 01:01 PM Author: dor123
All of the LED lamps are integrated.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

dor123
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Sep 13, 2016 at 02:08 PM Author: dor123
This is one of the disadventure of LED lighting: In the case of low mains voltage, it turns the area into a night club.
I remembered that an american member posted link to a video of LED roadlighting that suffered from the same fare.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

dor123
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Sep 14, 2016 at 01:40 AM Author: dor123
The flashing of the LED lamps in my hostel yesterday, during the low voltage, reminds me of this .

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

Binarix128
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220V AC 50Hz


UCOUT2noI2R__jgPSJUjGRtA
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Apr 05, 2019 at 01:41 PM Author: Binarix128
Thats a connection error! Or some capacitor shorting the terminals in a lamp

-I dont speak English very well. Compact Fluorescent (PL)
-Say NO to incandescent bulbs ban! Incandescent Lamp
-lamp saver Mercury Vapor Lamp

dor123
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Apr 05, 2019 at 09:48 PM Author: dor123
No. This is a brownout in my former hostel (There was ~90V at the hostel during taking the picture), which occur after a power interruption in my neighborhood until 19:00. When the power restored at the first time, we had ~90V instead of 220-230V, so the LEDs flash like this. The dim red lamps are halogens.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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