schematics for batteries

[dysfoundation]

hey guys im planning out my design for a variable voltage usb passthrough(most likely going to be in a box) and i was wondering what are the connections the battery makes before power hits the atty/carto

my plans are:
variable voltage from 3.7-5v using usb
will be in a box mod
also thinking of increasing voltage to 6v buut i will need a little more hardware on that and im not the strongest in using transitors

to make it a little clearer, what is inside the battery casing that connects to the threads the atomizer screws into?

and the reason i ask this is because i dont have a spare battery i can open and honestly..i payed to much and its to early from the purchase of my vgo kit before i break down and start tinkering with it.
edit: i meant transformers and transistors

 

[dysfoundation]

anyone help me out?

 

[WillyB]

What you are planning to do is not a trivial task. It will take more than just a basic understanding. No offense but not knowing how a battery fires an atty shows you need to do a little research first.

Look here and maybe buy the device he's using.

http://www.e-cigarette-forum.com/fo...ust-got-done-making-passthru.html#post1836436

 

[dysfoundation]

What you are planning to do is not a trivial task. It will take more than just a basic understanding. No offense but not knowing how a battery fires an atty shows you need to do a little research first.

Look here and maybe buy the device he's using.

http://www.e-cigarette-forum.com/fo...ust-got-done-making-passthru.html#post1836436

not going to get into all that with you, just asking for schematics if anyone has them

 

[Emris]

to make it a little clearer, what is inside the battery casing that connects to the threads the atomizer screws into?

Wire!

Are you talking about the enclosure (box)? To be honest your question is a little hard to follow. I don’t know if it’s your nomenclature or it could be just me. I have read it several times wanting to help, thinking surely he is not talking about the chemical structure and the metals used in the battery! But I have been wrong before!

 

[WillyB]

not going to get into all that with you, just asking for schematics if anyone has them

So the PT specific schematics/pics in the link I most graciously posted aren't good enough?

 

[stouchon]

Wire!

thinking surely he is not talking about the chemical structure and the metals used in the battery! But I have been wrong before!

Man, I almost laughed my rear off the couch.

As far as the rest goes, I believe you may need to do some more searching. Most variable circuits I have seen need more than 5 volts to power. So using usb would not be optimal. I am no electrical engineer though.

You could just use a two switch setup. Limit the voltage from one switch to whatever you like and have the other straight through for 5v. I have heard of people using diode's to drop the voltage a bit. I just tried with some leftover from my xbox jtag gear. The ones I have drop voltage in .35v increments. I tried with two twisted together and got 3.13v out of a 14500 that started with 3.85v. I am also not certain if it would be safe to do so.

 

[dysfoundation]

No I saw them when I got home, I couldn't see pictures with my phone so I didt know and I assembly them and I'm hoping to base it on that,
Lol no I wasn't asking about the chemical compound of the batteries just components. But from what it seems, unless your going for a variable voltage its pretty simple.

Here is my idea
Custom Box mod a USB passthrough
Make the USB piece detachable
Since its a box mod I'm throwing around the idea of making a led readout. But that might be to much clutter

Sent from my T-Mobile myTouch 3G using Tapatalk

 

[dysfoundation]

Wouldn't that cause to much heat within the mod?

Man, I almost laughed my rear off the couch.

As far as the rest goes, I believe you may need to do some more searching. Most variable circuits I have seen need more than 5 volts to power. So using usb would not be optimal. I am no electrical engineer though.

You could just use a two switch setup. Limit the voltage from one switch to whatever you like and have the other straight through for 5v. I have heard of people using diode's to drop the voltage a bit. I just tried with some leftover from my xbox jtag gear. The ones I have drop voltage in .35v increments. I tried with two twisted together and got 3.13v out of a 14500 that started with 3.85v. I am also not certain if it would be safe to do so.

Sent from my T-Mobile myTouch 3G using Tapatalk

 

[duby]

If a 5V LDO regulator doesn't put out too much heat, a series of diodes isn't going to either.

As to your original question, I too am confused as to what you want.
The circuit is a simple resistive circuit with the atomizer as the resistor. So its simply positive on one side of the atomizer, negative on the other.
Do you intend to use scavenged battery circuitry in your mod? That's tricky and a Pain in the rear.
If you are not strong in transformers/transistors maybe you shouldn't tinker with Variable voltage yet.

My suggestion is to build a simple 5V pass through first, then try VV after you have a better understanding.


If you are building a pass through, you'll have plenty of room in a box for a LED readout. Taking that battery out makes room for all sorts of stuff.

If you want variable, you could go a few different ways. Linear Reg, or Switching reg with 5V in would work fine. You're not going to be able to go above the Input voltage with either of those standard setups.
You could try a build with a ti-booster and some diodes. Effectively a fistpack with no battery. With the booster you challenge will be going below 5V.
You could build both into one box and use the master switch to swap circuits.

Thats it off the top of my head.

 

[dysfoundation]

im bad at explaining, as seen above
but im making a simple passthrough
but after all this cristmas cheer im planning on making a digital display passthrough that when i adjust voltage itll read it out

 

[Java_Az]

one Large battery schematic sorry this is all i could dig up

 

[Rocketman]

dys,
people here are trying to help you out. You may have the desire to make a Variable voltage passthru but may need to, as previously stated, learn a little about "transistors" anyway. maybe even those magic MOSFET transistors. Going off trying to design your own mod will be a challenging but fun task. I wish you luck.
The circuit inside your "paid too much for" e-cig battery is as follows:
a spiral wrapped foil Li-ion battery, positive connected to a MOSTET transistor, controlled by a microprocessor that monitors cell voltage (both upper and lower limits), and a small little switch to send a signal to the microprocessor to turn on the MOSFET switch. If you have an "automatic" instead of a "manual" battery then the "switch" is another "magic" device instead of a little button. Oh, and some have a cute litttle LED that lights up when the MOSFET turns on.
Salvaging these components is possible from an inexpensive ($10 e-cig battery or even a $15 eGo sized e-cig) but most modders just buy the magic parts and start fresh.
Variable Voltage devices of course have additional parts that are even more complicated.
Making a successful V V mod is a delicate balance between cost, reliability, performance, and efficiency. Using resistors, diodes, or linear regulators being the least efficient and buck/boost circuits being more costly and complicated.
Building a pass thru device versus a self contained until aslo brings in the aspect of source current capability and lead in resistive loses. Do you own a multimeter, and know how to use it? If not, put that on your Christmas "I want to learn how to" list. Hope this doesn't come across as negative feedback to your posts.



One other resistance you may have to put up with if you plan on building a mod is to answering an incomplete question.

 

[Emris]

I guess the best thing I could suggest right now is, look over all the mods in these forums, save a picture of the mod the most looks like what you are trying to build. Make some notations about them, use paint if need be to mark areas of interest and notate your thoughts and how this can be used in the mod you are trying to build! This should give you a basic idea, go over the evercool mod, there is a ton of great information in there about VV units. I wish I could help more.

 

[dysfoundation]

thanks guys for the help, it might not seem that i am catching on enough but you guyshave actually done a great deal of help for me.
this is what i plan on including on the fisrt one i make

 

[duby]

On the voltmeter thing. You're not going to need a 4 digit display. 3 Digits is excessive as is.
http://www.e-cigarette-forum.com/forum/battery-mods/115651-5-50-voltmeter-load-checker.html
Is a quick and easy way to achieve the same end result. The displays are much more easily purchase than constructed.
With that being said, "kit" projects like the one you posted are loads of fun and a great way to learn.
It all depends on what you want to get out of the project.

 

[dysfoundation]

yea i figured 4 digits was a tad much but it was one of the few schematics that i could drop the supply voltage below 5v

On the voltmeter thing. You're not going to need a 4 digit display. 3 Digits is excessive as is.
http://www.e-cigarette-forum.com/forum/battery-mods/115651-5-50-voltmeter-load-checker.html
Is a quick and easy way to achieve the same end result. The displays are much more easily purchase than constructed.
With that being said, "kit" projects like the one you posted are loads of fun and a great way to learn.
It all depends on what you want to get out of the project.

i like that little meter he made i might actually start looking into that one thing is would it work with a pentiometer on it?
edit: found oneRC helicopter Lipo battery portable Voltage meter alarm - eBay (item 130463363676 end time Dec-08-10 09:08:11 PST)

 

[Java_Az]

yea i figured 4 digits was a tad much but it was one of the few schematics that i could drop the supply voltage below 5v

i like that little meter he made i might actually start looking into that one thing is would it work with a pentiometer on it?
edit: found oneRC helicopter Lipo battery portable Voltage meter alarm - eBay (item 130463363676 end time Dec-08-10 09:08:11 PST)

Thats a s2 -s6 meter wont work for what we use them for. You need a S1 - S6 meter

 

[dysfoundation]

sad times...

 

[duby]

would it work with a pentiometer on it?

Ok, from this is sounds like you know next to nothing about circuits. You really need to understand what a resistor is, how a simple R circuit functions, and that an atomizer is a resistor.
You also need to understand Ohm's Law and Kirchhoff's Rules and how they apply.

Alternatively you could just soldier some crap together and hope it works. Then post here when it doesn't.

In the latter case I won't be bothering to offer you any more advice.