Modding a passthrough?
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I was wondering the same thing. I'm thinking of just cutting my battery out and rewiring and trying it out. I hear the voltage from a USB port on a pc is around 5 volts so I guess we'll see what happens.
5V @ 1000mA with a Joye 510 will give you a vaping voltage of 2.2V. You need the voltage and enough current to go with it.
I need to learn why this is... Care for a quick mathematical run-through, thats the only part I would seem to understand, and would really like to begin to understand for when I start modding here pretty soon.
Maybe just a link to something where I could figure it out on my own?
Ohm's law. I = V/R
I = current (amps)
V = Voltage (volts)
R = Resistance (ohms)
Your resistance is fixed by the atomizer. You can only vary I and V to make the equation work. If the power supply can provide the amps then the device will draw whatever current it draws at that voltage. If the power supply is not capable of providing the current then you will see a voltage drop.
and yes, PC USB ports are 5v. Unfortunately most all are rated for 500 mA or less.
I = current (amps)
V = Voltage (volts)
R = Resistance (ohms)
Your resistance is fixed by the atomizer. You can only vary I and V to make the equation work. If the power supply can provide the amps then the device will draw whatever current it draws at that voltage. If the power supply is not capable of providing the current then you will see a voltage drop.
and yes, PC USB ports are 5v. Unfortunately most all are rated for 500 mA or less.
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So I would just use a multimeter to test out the amps/ohms? I need to know where I can get I and R.
edit: So mAh is in there, regarding the amps? or what? Jeeze, I think I might just take a summer electronics class so I can learn all of this ...., even though electricity scares the jebus outta me..
edit edit: how in the hell do ohms, mAh, volts and amps all relate to each other.. so damn confused on this..
also: how would normal 5v usb passthroughs work then if the atty cuts it down 3.8v?
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There's a thread a page or so back "How to make a USB passthrough" (can't post links, as i only have 7 posts)
I mean he basically just wires the atty connecter to a usb cord w/ a little switch and he's off to the races....maybe he's using a low res atty/non 510 atty or something? Maybe this doesn't work at all? or is there something different about the wires used w/ the inline batt PTs?
I have one of these inline pt's as well, and it's meh and i'd like to try HV vaping and don't have the cash for a mod right now...or maybe i'm just bored. dunno.
Edit: Just checked the power supply on my computer, and it says at +5v (DC output), the max output is 30A and at -5V it's .8A...that'd be what? 30,000 miliamps - 800 miliamps. I have an upgraded Power supply on my computer so it may vary, and i'm unsure of how many Volts are coming out of the USB slot.
Another thought...what about a Wall plug that is at 2 Amps.
I mean he basically just wires the atty connecter to a usb cord w/ a little switch and he's off to the races....maybe he's using a low res atty/non 510 atty or something? Maybe this doesn't work at all? or is there something different about the wires used w/ the inline batt PTs?
I have one of these inline pt's as well, and it's meh and i'd like to try HV vaping and don't have the cash for a mod right now...or maybe i'm just bored. dunno.
Edit: Just checked the power supply on my computer, and it says at +5v (DC output), the max output is 30A and at -5V it's .8A...that'd be what? 30,000 miliamps - 800 miliamps. I have an upgraded Power supply on my computer so it may vary, and i'm unsure of how many Volts are coming out of the USB slot.
Another thought...what about a Wall plug that is at 2 Amps.
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Ok so I sucessfully rewired my PV to do direct connection. I've heard a lot of failed attempts on other threads but I found out why.
-Cut your wires and remove your battery box
- You should now have the 510 connecter end and the USB plug end with the cut wire on each end.
-Take one of the cut ends and seperate the two wires (just like headphone wires) strip down the rubber about an inch for each wire you should see one is a gold color and the other green.
-repeat for other end of wire
-Twist the green wires together and then take a lighter and heat up the two twisted wires for about 5 sec (this removes the outer coating in the copper wire and also acts as a kind of soldering to establish a good connection)
-repeat for the gold wires
-wrap each of the newly connected wires in electrical tape
now you have direct feed PV. Happy Vaping
Then
-Cut your wires and remove your battery box
- You should now have the 510 connecter end and the USB plug end with the cut wire on each end.
-Take one of the cut ends and seperate the two wires (just like headphone wires) strip down the rubber about an inch for each wire you should see one is a gold color and the other green.
-repeat for other end of wire
-Twist the green wires together and then take a lighter and heat up the two twisted wires for about 5 sec (this removes the outer coating in the copper wire and also acts as a kind of soldering to establish a good connection)
-repeat for the gold wires
-wrap each of the newly connected wires in electrical tape
now you have direct feed PV. Happy Vaping
Then
Then find out what's wrong with the above instructions... by which time it maybe to late.
Seems like if it's wired straight in, that while advertised as a 5v passthough...and it is 5v...it is still not going to put out the same current as a 5v battery mod, because the amperage is off...so it may be 5v, but it won't be as much as if it has an in-line battery (unless you up the amperage w/ a wall plug or maybe even a powered USB HUB, not sure what the specs are on those, though). This is just my understanding of it from threads like this throughout the forums, and other online sources. So if i'm wrong, let me know!
Definition off of wikipedia of mAH
"An ampere-hour or amp-hour (symbol Ah , A·h, A h) is a unit of electric charge, with sub-units milliampere-hour (mAh) and milliampere second (mAs). One ampere-hour is equal to 3,600 coulombs (ampere-seconds), the electric charge transferred by a steady current of one ampere for one hour.[1] The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries. The commonly seen milliampere-hour (mAh or mA·h) is one-thousandth of an ampere-hour (i.e., 3.6 coulombs)."
So...basically, mAh stands for milli Amp hour and it's how a battery's energy storage capacity is measured. The higher the mAh rating the higher the energy capacity of your battery
Definition off of wikipedia of mAH
"An ampere-hour or amp-hour (symbol Ah , A·h, A h) is a unit of electric charge, with sub-units milliampere-hour (mAh) and milliampere second (mAs). One ampere-hour is equal to 3,600 coulombs (ampere-seconds), the electric charge transferred by a steady current of one ampere for one hour.[1] The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries. The commonly seen milliampere-hour (mAh or mA·h) is one-thousandth of an ampere-hour (i.e., 3.6 coulombs)."
So...basically, mAh stands for milli Amp hour and it's how a battery's energy storage capacity is measured. The higher the mAh rating the higher the energy capacity of your battery
well, what i'm getting from this is that its depending on the amps that the usb port puts out, which some say is .5amps and some say 1 or 2. I'm not exactly sure which it is.
What it looks like that we actually need to have for it to vaporize the juice is a 5watt power supply. With a .5amp output @ 5v, its only 2.5watts, with 1amp, we get 5w and with 2amps, we get 10watts... I think anything higher than 10watts seems to be like its too much for the atty to handle and that's why people have problems with some of the higher voltage mods.
I'm still trying to figure out if its the watts that we need but I think it is. Don't take my word for it though, unless it seems like it makes sense to you.
edit: I made a whole thread to better help myself understand things, if you wanna look it over, I have gotten a lot of info on all of this from there. Clicky
What it looks like that we actually need to have for it to vaporize the juice is a 5watt power supply. With a .5amp output @ 5v, its only 2.5watts, with 1amp, we get 5w and with 2amps, we get 10watts... I think anything higher than 10watts seems to be like its too much for the atty to handle and that's why people have problems with some of the higher voltage mods.
I'm still trying to figure out if its the watts that we need but I think it is. Don't take my word for it though, unless it seems like it makes sense to you.
edit: I made a whole thread to better help myself understand things, if you wanna look it over, I have gotten a lot of info on all of this from there. Clicky
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