remote conol ansmitter household unit, the use of common, low cost, and the launch codes and more led light sources can be conolled to achieve the multi-level brightness adjustment; infrared receiver constituted by the hs0038, it is integrated infrared receiver, amplification, demodulation and shaping the integration of the circuit components can be identified ttl output signal to microconoller; infrared remote information processing realized by the microconoller at89s51, the main issue of the completion of the infrared remote conol to identify coding and decoding , and then decode the results to the remote key that corresponds to pwm dimming signal to conol pt4115 led constant .
neon beer signmajor test equipment: incubators, thermometers, voltage regulator, voltmeter and clock. main test items: high-temperature startup performance and reliability testing quantity: 10. test method: plug ials. at high temperatures, the regulator voltage to 250v, switch three times, at intervals of not less than 8 seconds (an interval of 8 seconds is to be the capacitance of all the discharge lamps to reduce the mutual interference), in the process , lamps should not be damaged, or they will be disqualified. c: low temperature. main test equipment: cold boxes, thermometers, voltage regulator, voltmeter and clock. main test items: low temperature and pressure to start. the number of tests: 10. test method: tested lamps into the cold chamber, the connection circuit, the voltage regulator's output voltage to 180v (voltage regulator power .
illuminated signsled junction temperature values near the target, using this method have a good simulation of the parameters, it also measured the parameters of these makes sense, and its light, color, elecical parameters measurement results have good reproducibility. figure 1 led junction temperature measurement and the use of vf-tj junction temperature curve in setting conditions of light, color, elecical parameter measurement system. third, led lighting into the measurement of junction temperature after 1, led lighting into the junction temperature conol and measurement after the need for led lighting when applied to people in general want to have tens of thousands of hours of life, but to measure the use of led lighting apparatus light attenuation and life, in accordance with the requirements of the u.s.
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