 Wysłany: Pią 2:28, 01 Kwi 2011 Temat postu: Event Supply High-Quality Products For Trade Show |
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| led control device that has set itself the logic of circuit. external menu board control unit control port or output port connected to the circuit if the boot or when the external circuit has a capacitor, the capacitor connected to the voltage across the capacitor when the mutation is not possible the characteristics of thesurge current will be significant interference control device to work properly, the operation of logic circuits.
the measured power factor compared with the nominal value, a difference of not more than lusm0.05 is ruled eligible. here the power factor electronic control device to give some description of the nominal approach, led billboard the standard stipulates that when the power factor less than 0.95 and the current leads the voltage (capacitive), the power factor values should be added after the c word, for example 0.90 c, 0.85c and so on greater than or equal 0.95 or current lag behind the voltage (inductive) power factor values after the case without c, so that users can install a lower power factor, the compensation to be clear. at the same time there is a led light difficult than the feature off, it will have trailing phenomenon, led signboard when the serial driver circuit of this phenomenon is particularly evident. the parallel drive for led in the carrier to provide a low resistance channel, thereby reducing the pulse width distortion and slow tailing phenomenon. |
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