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کد مطلب:94061

Example LED Driver Circuit

Example LED Driver Circuit

تعداد صفحه : ۲Example LED Driver Circuit Running an LED with pulses to get maximum brightness    To give maximum brightness an LED needs to be driven by a pulse circuit. In this way, it is possible to put 0.5 Amp current pulses through an LED at a frequency of around 100Hz which fools the eye into thinking that it sees a continuous light. If the LED is run at 0.5 Amps for very long, it will burn out (usually within a fraction of a second). By keeping the pulse duration relatively short, we can avoid overheating the LED. This circuit allows adjust ment of the pulse width so that the maximum average current is no more than 50mA. To ensure long LED life, it should be adjusted for maximum brightness then reduced slightly to an average current of around 40mA. One or two LEDs can be…

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