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Post by ratty on Jun 28, 2017 11:10:05 GMT -5
Can anyone shed some light on what if any significance the presence of a PFC board will have in a Cine8? I would love to get both my PJs exactly the same, but the price I got from Curt for a spare board is pretty steep, plus that board just adds an extra fan that is actually audibly whiney. Or maybe if someone has one they'd be willing to part with at an affordable price I'd be game for it.
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Post by gjaky on Jun 28, 2017 11:22:57 GMT -5
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Post by ratty on Jun 29, 2017 9:09:44 GMT -5
What about visually ?  I doubt it, but is there any difference in the picture? Thing is, I don't think I want to spend $200+ on the board... I'd like to have one but that's out of my price-range for a single pcb. |
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Post by gjaky on Jun 29, 2017 15:54:09 GMT -5
Of course it won't affect the picture quality, however without PFC your projector will "consume" a lot of reactive power, which cause voltage drop on your power lines so it will affect your power bill after all. But I admit that it would take quite some time to spare the 200 USD just by using the PFC board...  |
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Post by Casethecorvetteman on Jul 2, 2017 3:52:43 GMT -5
It will only affect the power bill if youre charged per unit of Volt-amps, which is not the usual case. Power on domestic situations is almost always charged in units of kilowatt hours.
The power factor of the projector is not going to be that bad that itll cause a significant voltage drop, and i very much doubt it will bring you down to 0.8 lagging.
Placing a couple AC caps on the feed line will do something simular but wont be active and self adjusting.
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Post by gjaky on Jul 2, 2017 4:44:01 GMT -5
It will only affect the power bill if youre charged per unit of Volt-amps, which is not the usual case. Power on domestic situations is almost always charged in units of kilowatt hours. The power factor of the projector is not going to be that bad that itll cause a significant voltage drop, and i very much doubt it will bring you down to 0.8 lagging. Placing a couple AC caps on the feed line will do something simular but wont be active and self adjusting. The SMPS acts like a capacitive load, therefore it needs a coil to compensate the power factor (which can be seen in some cheap PC PSU as well), Caps compensate the power factor of the inductive loads (motors) which is more likely found in industrial environments. |
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Post by Casethecorvetteman on Jul 2, 2017 18:59:57 GMT -5
Yes i know how it works, but capacitive loads cause out of control voltages, usually elevated, rarely dropped.
Itll make little to no difference to set operation.
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I doubt it, but is there any difference in the picture? Thing is, I don't think I want to spend $200+ on the board... I'd like to have one but that's out of my price-range for a single pcb.
