Mains powered mod - hard to build?

[testdruif]

Aug 28, 2013 12:27:01 GMT raid2506 said:

Aug 28, 2013 11:32:45 GMT testdruif said:

Then I really wonder what they put into those usb only passthrough thingies as they only operate via usb (computer or charger) and work just fine

A commercial USB PT charges the battery at about 5v and 420mah and you draw power from the battery as normal.

They are not true PT's though, more like a trickle charger.

If you chain vaped constantly for about 20 hours you could deplete the battery and would then have to wait for it to charge.

I was referring to these: www.vapingthings.com/510_MINI_USB_PASSTHROUGH,_CHROME_OR_MATT_BLACK/p1311952_7048616.aspx

[raid2506]

Not seen those before.

I would assume a large capacitor or small battery does the work, will have to buy one and take it apart to be sure.

[markm]

A rheostat, mains lead and 510 connector should do the trick.
Would I do it? I doubt it, unless a rainy Sundy and the components coincided

[chrisde]

I wouldn't use a USB for a true pass through, but a lab power supply or a modified PC power supply.

[fred]

Aug 28, 2013 12:23:22 GMT raid2506 said:

Aug 28, 2013 11:28:08 GMT fred said:

testdruif

As I said, i'm no electrical engineer, but as far as I'm aware, it doesn't matter how much current you throw at that board, it will still only output 5V @ 1a.

That board has a rated output of 2a max (3a with heatsink)

Been   for just over half an hour, and realised you're talking about the second board he linked to.
I knew I couldn't be right and you be wrong - you know what you're doing 

I was talking about the first board he linked which I'm still sure is only 1a ?

Phew.....

[raid2506]

Haha, don't be so sure fred, I'm often wrong. I just hide it well.

Will have a look at your link.

[fred]

Aug 28, 2013 13:09:21 GMT raid2506 said:

Haha, don't be so sure fred, I'm often wrong. I just hide it well.

Will have a look at your link.

Hey - I'll not argue with you - you got a box full of diablos

[raid2506]

Yeah that just means I'm lucky!

[raid2506]

I looked at the board you pointed out fred and you are right, it's limited to 1a, but......

If you change the resistor I circled you should be able to change the amp output:



A value of about 500r should give you 2 amps. Would have to play with one and do some sums to be certain.

Is a PITA changing SMD components though, even with a 0.5mm tip on your iron.

[Mev]

maybe put a vamo board in your mod with a direct input for voltage... could keep it nice and small too.

[Method69uk]

Yep those are the passthrough's I've been using up till now testdruif.

I pulled one apart when it broke down before - if anyone wants the one I've just broke just for a look inside let me know and I'll post it.

[Method69uk]

Aug 28, 2013 16:22:06 GMT Mev said:

maybe put a vamo board in your mod with a direct input for voltage... could keep it nice and small too.

Mev - only saw this afternoon you can buy a Vamo board.

So, would just have to connect it to a 510 connector at one end and a socket for a mains adaptor at the other? Obviously in a case of some sort)

What sort of power would the mains adaptor need to give out?


Sorry for all the questions all. Trying to get my head around all this

[Mev]

I'd have to check the specs but the vamo board as quite a decent range of input power from 3.3v i believe upwards, as you can use stacked batteries it'll be quite high range too.

Like i said without checking the specs properly i'd be guessing but an adapter with a dc plug and around 4v would sound ideal.

[Method69uk]

On this subject, could something like a Vamo or any other VV mod have a socket fitted to accept a mains adaptor?

[Deleted]

Anyone wanting higher USB current output can connect to two USB ports with a Y-shaped cable, effectively doubling the output. Checking the motherboard specifications is advisable. Peak current for charge devices is often much higher than the 'constant use' figure commonly given.
Anyone looking to use a mains adapter directly to a 510 connector, please ensure it is a ground isolated adapter with adequate protection. Many of the cheap imported power bricks are badly built, and potentially dangerous under even moderate loads. Vape safe, use 2 usb connectors if you're not familiar with PSU's