 Wysłany: Czw 3:39, 07 Kwi 2011 Temat postu: Jiuhua Internet Remote Play launched wide-angle LE |
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| the control unit can maintain a constant output current characteristics. led voltage characteristics from the work point of view, menu board such control device is most appropriate, it does not require additional current limiting impedance, the output can be connected directly in the led load. led control output current control devices, if not a stable output current, the internal characteristics of a constant current circuit is not perfect, such as internal limiting use of inductance or capacitance of the circuit. such circuits from the output side to watch the outputimpedance, less than a constant current output control device,but significantly higher than the control output voltage control devices.
see the light control device materials publicizing chapter xix "iec61000-3-2 standards and the detection principle of" article.) electronic control device from the line-side view, is non-linear components, led billboard so starting a λ to represent the power factor. therefore, considering the rate and distance of our targets, select the appropriate type of fiber, the transceiver and the drive circuit, to obtain high performance and low cost fiber-optic key way. 3, optical fiber communication device to select abasic optical fiber communication system is very simple: an led signboard emitter into optical signals to electrical signals, and the coupling will enter the transmission fiber, the optical signals through optical fiber to reach the receiver, which the receiver optical signal to electrical signal restored to its original output. |
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