Hi.
I need an information about LED's (Light Emitting Diode) power factor- cos (fi). I know that question is seemingly strange but I hope that someone could help me.
Marcin,
- posted
16 years ago
power factor
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- posted
16 years ago
LEDs are fed with a dc voltage. where there may be a power factor variation would be due to the power supply feeding the LED. That will depend on the design of the power supply.
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- posted
16 years ago
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LED can be fed with VAC, of course it's blinking then. What's the LED's power factor supplied from VAC?
Marcin,
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- posted
16 years ago
No, if you bias LEDs the wrong way, they blow up. Blinking LEDs are fed with an interrupted dc supply.
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- posted
16 years ago
Ordinary diode connected in parallel but the opposite way round. When the voltage reverses the diode conducts and protects the LED.
However, blinking at mains frequency probably isn't too noticeable