Why turn off the switch and dim the led lamp
A common cause of ED lights flashing and the solution: After turn off the power supply LED lights flashing, check the switch control is zero. If the correct wiring may refer to the following methods: The human eye can generally perceived frequency of 70 Hz light flashing, higher than the frequency does not perceive. So in LED lighting applications, if the pulse signal frequency is lower than 70 Hz low frequency component, the human eye will feel the shine. In the specific application, of course, there are many factors may lead to LED lights flashing. For example, in an off-line low power LED lighting applications, a common power supply topology structure type is to isolate the flyback topology. In accordance with the "energy star" solid-state lighting standards from line 8 w LED drive GreenPoint ? reference design as an example, as a result of the flyback voltage stabilizer sine square wave power conversion did not provide primary offset constant energy, dynamic self-supply (DSS) circuit may activate and trigger light flashing. To avoid this problem, must enable primary bias to partial discharge in each half cycle, accordingly, need to choose appropriate constitute the bias circuit of capacitance and resistance value.
Mainly because of internal power filtering capacitance. When the power is shut down, capacitance on the surplus electricity will let LED continue to dim light for a while. Capacitance discharge, it is for this reason...
As if there is possibility is zero wire connection, received a zero on the line, also may be long bright, just happened to our family.
LED shoot the light is long, the inside of the wick will burn red hot, when power off, burn the red hot wick will not immediately cooled, there seem to be careless, so slowly after cooling is not lit up.
