planning a light control unit using high power (1W or 3W) LEDs. planning on PWM for brightness control.
the LEDs are meant for room lighting, which means they could be on for hours at a time, and I was wondering if switching them this rapidly decreased the lifetime or otherwise had a negative effect.
Not sure exactly what frequency i want to PWM at, I read that a few people can detect flicker at 100Hz, so I was thinking 200Hz or 400Hz. It's arbitrary, I have yet to order the components that determine frequency (if i end up using a 555), and the frequency is programmable if I end up using a PIC or other uC.
additionally, what number of these high-power LEDs do people suggest for mimicking the intensity of your average 60-100W incandescent?
thanks!
the LEDs are meant for room lighting, which means they could be on for hours at a time, and I was wondering if switching them this rapidly decreased the lifetime or otherwise had a negative effect.
Not sure exactly what frequency i want to PWM at, I read that a few people can detect flicker at 100Hz, so I was thinking 200Hz or 400Hz. It's arbitrary, I have yet to order the components that determine frequency (if i end up using a 555), and the frequency is programmable if I end up using a PIC or other uC.
additionally, what number of these high-power LEDs do people suggest for mimicking the intensity of your average 60-100W incandescent?
thanks!
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