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Working principle of Qihui emergency light

May 14, 2020

Occasionally, due to special circumstances, emergency light will always be used. For example, when power outages, earthquakes, and fires cause the use of conventional lamps, it is the time when emergency lights are used. Emergency lighting is a type of lamp that can effectively illuminate and display evacuation channels when the normal lighting power fails, or can continue to illuminate without interruption.

How it works:
  The 220V AC power supply is stepped down by C1 (R1 is the bleeder resistor), VD1 ~ VD4 rectified, and C2 filtered to provide a direct current of about 100mA to the electromagnetic relay J with the conversion contact to make it pull in, J-1 is turned on and charged The circuit is isolated by VD5 to charge the battery GB. LED1 and LED2 are on, indicating charging.
When the mains power fails, J loses power and J-1 returns to the lighting circuit, disconnecting the charging circuit. At this time, turn on S1, S2 to light up the incandescent beads EL1, EL2 emergency lighting.

The Led Emergency Light produced by Qihui Lighting Electric Co., Ltd. comply with international standards, and the products are manufactured in accordance with IEC62133.
Models are: FAT-LED-F1A, FAT-LED-F1B, FAT-LED-F1C, etc.,
Purchasing website; Hppts: //www.qihuilights.com

For example, railway tunnels and other places may require power off when they need to be repaired, and they will need to use emergency lights. Now, because of the promotion of energy conservation and emission reduction, LEDs are used in many ways, and because of the wet reasons, they need to use three. Anti-light. Like our company, there are several models of three emergency LED emergency lights: NFE9121 and NFE9178. These two LED emergency lights are very commonly used. The monthly shipments are very large. The emergency time for these two models is about 10 hours, which is completely enough for workers to overhaul, and their Service life is also very long. They can use 100,000 hours. In general, where the three lights are used, the environment is not very good, so the workers do not need to replace the lamps often to damage the health of the construction.

Led Bulkhead Emergency Light For Home Png

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