The start and closing time of traffic lights. LED traffic light power adapter planning and inappropriate use of energy storage component, in the same group or in the same direction lights shine unit will happen step is different, can't correct echo signal output signals, and even may lead to signal an error. In order to ensure the signal is consistent with the signal output signal, the 2011 version of the standard reference to Australia and the United States on the relevant provisions of the LED lights, light emitting unit launched echo time shall be no greater than 100 ms, closed echo time should be no greater than 100 ms.

Operating voltage scale. 2011 version of the specification according to the situation of grid in our country, refer to abroad specification on request, to light by the normal operation of the voltage scale voltage of plus or minus 15% to plus or minus 15% extra homework, benchmark and request signal lamp light intensity on the axis moved is not greater than 10% under the additional voltage. At the same time, in order to prevent the luminescence of non-lighting phase signals, the 2011 specification provides that no visible light should be emitted when the power supply voltage is not greater than 90V.

Summarized different varieties of light energy consumption of goods, on the basis of test data, the 2011 version of the specification detailed the LED light source lamp power request, for different standard, the presence of picture signal power, respectively, puts forward the request.

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