A: The light emitted by the light source shows a certain frequency through time, the period changes, and the time changes between different brightness and colors.

Electronic circuits, a certain kind of ballast, drive or power supply, the light source will produce stroboscopic, output luminous flux transient, the more serious the stroboscopic.

Q: What is strobe related to?

A: There are not only the factors of led dimmable power supply, but also the factors related to the technical performance of the electric light source and the factors of unreasonable lighting design. For many lighting fixtures, the working current of the light source will inevitably vary with take an incandescent lamp as an example, driven by 50 Hz AC mains, the light flickers after the negative half cycle and the positive half cycle overlap

The frequency is 100 Hz; the output light frequency of a gas discharge lamp using an inductive ballast can also be converted into frequency AC and fluctuate. In addition, the transient changes of the AC power grid

Between 10% and 20%, the light mutation of the lighting fixture is deepened.

Not all strobes are harmful
The flicker produced by lighting is annoying, but in life, there are also some "flickers" that we want.
1. The lights on ambulances, fire engines and police cars;
2. Wing indicator light when the plane is landing;
3. Laser lights for concerts and bars;
4. In addition, LED lights flashing at a specific frequency can help treat Alzheimer's disease.

Harmful stroboscopic

But in many cases, strobe will cause harm:
1. The flickering light source of 3-70Hz may cause photosensitive epilepsy in some people;
2. A flashing light source of 100Hz can cause headaches and migraines;
3. The 120Hz flickering light source will affect people's emotions, causing boredom, worry, etc.;

4. The visual illusion caused by the stroboscopic effect is also very dangerous in industrial places and so on.

From the perspective of light-emitting principle, the existence of strobe depends on the LED driving power supply

SMARTS 5 in 1 dimmable LED driver optimizes the circuit design, which can reduce the frequency of strobe to the greatest extent

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