Uwell Caliburn-Why did they choose Direct Voltage Output?

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Was hoping those in the know could help me understand why uwell chose "Direct Voltage Output" in the new Caliburn vs "Constant Voltage Output". I see most/many Pod systems use "Constant", and curious if maybe using "Direct" allows the auto fire to ramp up quicker, or some other benefit, possibly overall battery longevity? The Caliburn is also on the pricier end for a Pod device, is it a bit more expensive to go that route? Had me scratching my head when I saw that on the spec sheet.
 
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dom qp

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Bumping this thread before it gets lost. Personally, I don't know the difference between "constant" vs "direct" voltage output.

Me neither. But I figure at the coil resistance and amount of power it puts out, the difference would be marginal.

I figure it would be like putting high end racing brakes vs sports car brakes on your Honda Civic when you're only driving in 25mph residential zones -- you're going too slow for it to matter.
 

Eskie

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Direct would he the equivalent of an unregulated mod. A mech with safety features. As you use the device the voltage will fall as you consume the battery charge. A constant voltage is like a regulated mod, a set wattage is applied to the pod coil. When the battery can no longer supply the required current a cutoff voltage of whatever they chose (3.2V is common but with pods and the battery selections they make we really don't know unless it's in the specs provided) it simply stops firing. One gradually drops the vapor temp and production (direct mech like) and one is constant until you hit the wall and it's discharged.

Now why they chose "direct" I have no idea (in regular mods it would be considered bypass mode).
 
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Rossum

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ow why they chose "direct" I have no idea (in regular mods it would be considered bypass mode).
It's cheap. There's only one high-powered component needed: A single MOSFET. You add a super-simple little micro-controller to monitor the voltage drop across the MOSFET when it's on to give you over-current / short circuit protection. It can also monitor battery voltage to give you a low-voltage cut-off and you're done.
 
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Eskie

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It's cheap. There's only one high-powered component needed: A single MOSFET. You add a super-simple little micro-controller to monitor the voltage drop across the MOSFET when it's on to give you over-current / short circuit protection. It can also monitor battery voltage to give you a low-voltage cut-off and you're done.

Point taken.
 

ppeeble

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Although 'constant voltage' should give a set voltage throughout the battery drain the reality is somewhat hit and miss. It really depends on what the 'constant voltage' is claimed to be - if it's over the actual battery voltage then, in my experience, it still drops off as the battery discharges. Especially on cheaper devices.
Constant output may also require a higher cut-off voltage giving less vape time.

Rossum hit the nail on the head though - direct output - 'it's cheap'
 
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