Q:What's the cause of the noise during the aging of LED bulb bulbs?

The power supply LED bulb using miniature low power switching power supply, switching transformer due to loose, and the switching frequency did not avoid the audio area, it will beep.

Q:LED bulb lamp. Is there a good drive or no drive? Is the lamp of good or integrated?

LED bulb: directly driven by not using AC-LED light source, light effect of the whole lamp life (compared with driving security; some) integrated LED relative heat transfer to the high requirements, high cost, simple assembly, do a single power source in low cost, high light efficiency.

Q:Will the power of the LED bulb grow longer and longer? Why?

Voltage problems, as well as unstable factors.Long time no change, should

Q:How does the LED bulb go with the power?

voltage range as long as the 36V can be achieved, for example: voltage range 24v-80v is very good,

Q:LED bulb lamp drive power electrical connection, will delay a few seconds before the lamp light, and power creaks, who know what it is!

Power supply has noise, it is the design of transformer, winding, the design of switch power supply.. Engineering reference..

Q:Led what's the flash of the bulb?

So, this is the power overheating protection at work. It will not be the case if the outer shell is enlarged or the room is ventilated and the heat should be cooled.

Q:LED bulb bulbs, do you need 3C certification now?

Light source class is impossible to do, only lamps and lanterns class can do. For example, flat lamp, ceiling lamp and so on...However, CQC voluntary certification can be done.

Q:What advantages does LED bulb replace energy saving lamp?

The response time is fast, the energy saving lamp is millisecond, and the LED light is nanosecond

Q:Choose which light bulb LED bulb is the healthiest

Choose LED lights, first, no strobe, strobe damage to the eyes, second color index to be high, true and clear. For the quality, choose to heat better, high power factor, so that the relative power of the lamp, power saving, durable

Q:LED bulb after the power failure, still glimmer, can last hours or even all day, what is the reason?!

The meter usually doesn't turn because the current is too small to drive the meter (Mechanical), of course, the electronic meter also depends on the sensitivity. I don't think so. At least I used to do LED (light power about 0.5W it) is equivalent to 3W incandescent lamp brightness around. The meter does not rotate when it is shining normally.