Led Lamps
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what does altering the frequency in LED lamp do? what about altering its duty cycle?
i thought altering its duty cycle is also altering the 'blink' of the LED lamp. but then, what does altering the frequency do?
the experiment is conducted using signal generator, LED lamp, resistor, and oscilloscope.
At low frequencies (less than 50Hz or so), the LED will blink (on and off - over and over again). If you change the duty cycle, then you'll be changing the ratio of the time that the LED is on versus the time that it is off during each 'blink'.
At higher frequencies, the LED will appear to be solidly lit (you won't be able to see it blinking at all). If you change the duty cycle, it will act like a dimming/brightening control (lower duty cycles dim the LED, higher duty cycles brighten it).
It's actually still behaving the same way as it does at lower frequencies (it is turning on and off, and the duty cycle changes the ratio of on time to off time), but it's too fast to see.
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MR16 GU10 LED Lamps
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