 Posted: Fri 2:15, 25 Mar 2011 Post subject: The Led writing board is the most efficient and co |
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| you should ensure that the range of test, control devices can work without the protection of the state into, or do not meet.b first open test work process s2, is closed again, s1, is closed at the rated voltage of s2,menu board the power meter should be read from the corresponding power to prove this state control is not transferred to protect the state.
equation (1): p-power supply active power ballast and lamp systems. s-power supply ballast and lamp systems, as in power. u-voltage i - supply current work as electronic control devices,in connection with the power supply wire, led billboard both fundamental current and harmonic currents of the existence of another control device to the power leakage of high frequency conducted interference feedback current exists (emi), but the definition of the type look. considering the system requirements and the selected index fiber, select the 820nm wavelength enables hcs fiber loss as low as 6db/km, while the dispersion has reached the minimum. 3.2, the choice of light source wavelength in the 820m, led light source can be the best choice, compared with the semiconductor laser, led signboard drive circuit is simple and low cost. 4, a practical optical fiber led driver circuit duplex communication system in which the role of driver circuit is converted into electric poweroptical power and modulation signals to be transmitted to the light source output. |
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