Common causes and treatment methods of LED Blue beacon light

LED Blue beacon light, the human eye can perceive the frequency is usually light flashing, above this frequency is not aware. Therefore, in lighting applications, if the pulse signal frequency is solar power beacon light than the low frequency components, the human will feel the flicker. Of course, in the specific application, there are many factors that may lead to a flashing light. For example, in off-line low power lighting applications, a common power supply topology is isolated flyback topology. To crown collar semiconductor with "solid state lighting standard energy star" 8 W away from the linear LED driver? Reference design as an example, the sine square strobe beacon light  regulator wave power conversion does not provide constant energy to primary bias, dynamic self supply circuit may activate and led flashes. To avoid this problem, we must make the primary bias in each half cycle of partial discharge, accordingly, need to choose appropriate constitute the capacitance and resistance of the bias circuit value. In addition, even in the use of excellent power factor correction, support the dimming of the LED Blue beacon light drive applications, also requires the electromagnetic interference filter. By step natural resonance transient current caused by the inductance and capacitance filter will stimulate the. If the resonant emergency beacon light  of input current to maintain the current lead, will be closed. After a short delay, usually also will conduct, the same resonant excitation. In the input waveform of 1.5 period, this series of events may be repeated many times, thus forming a visible flash. In order to deal with this problem, the input capacitor is a key requirement of dimming is the filter is very low, and the capacity to be able to pass and winding impedance decoupling. According to the formula, reduce the capacitance dimming module words, resistance can increase the resonance circuit, the principle to suppress oscillations, circuit recovery want.