Question on amperage needed.

[Skyway]

If I am going to be making a VV mod, how high would the regulator need to be able to handle concerning amperage? I see people talking about some switches only handling certain amounts because of the draw that the atomizers pulling.
Considering the following data sheet. Would something like this be able to handle something like the tekkeon's power fine and produce enough power coming out?

Input Voltage min2.5V typical2.6V to 12V max14V
Output Voltage 2.5V 2.6V to 14V 15.5V1
Continuous Input Current 0.5A2
Continuous Output Current 0.5A2
Output Ripple (Vp-p) 15mV 40mV 160mV
Quiescent current draw 6mA 15mA 32mA3

 

[Skyway]

This seems to be working within these voltages and amps.
5Volts in will allow a max current out (mA) of 500 at 3 volts, 467 at 4 volts, 375 at 5 volts, 313 at 6 volts and 268 at 7 volts.
Is this within the needed results for our PV's?
I got this from the datasheet of the a regulator I am thinking of picking up.

 

[Java_Az]

Really you want one thats at least a 3 amp rating. 500ma is not going to cut it. It will more then likely overheat pretty quick and cut out. To give you an idea, a 2.2 ohm atomizer @ 5 volts wants 2.27 amps so .5 amps is really under rated

 

[Skyway]

cool, those are the type of numbers I was looking for.

Edit, so this would work better then.
Regulator
This one states min 0 max 3A. Anywhere from 0v to 12v. With an input of 5V. So for something like the Tekkeon this would work.

 

[rannox]

cool, those are the type of numbers I was looking for.

Edit, so this would work better then.
Regulator
This one states min 0 max 3A. Anywhere from 0v to 12v. With an input of 5V. So for something like the Tekkeon this would work.

People have already used that regulator in a few mods, so you should be fine.

 

[pailpoe]

The price is very High. Use a simple PWM regulation for more efficiency .

 

[WillyB]

cool, those are the type of numbers I was looking for.

This one states min 0 max 3A. Anywhere from 0v to 12v. With an input of 5V. So for something like the Tekkeon this would work.

It's a nicely made piece with a decent warranty.

Dimension Engineering offers a full 1 year manufacturers warranty. If any product fails within one year of the purchase date we will replace the product at no charge.

After 1 year we will either repair the item or the item can be replaced for 50% of the retail cost.

What exactly do you mean by?

So for something like the Tekkeon this would work.

Work how?

 

[Skyway]

What exactly do you mean by?

Work how?

To enable to the Tekkeon to be a variable voltage.

 

[Skyway]

The price is very High. Use a simple PWM regulation for more efficiency .

You are going to have to give me more to work with than just PWM. I am not familiar with the term.

 

[WillyB]

To enable to the Tekkeon to be a variable voltage.

Well there ain't a lot of room in a Tekkeon and that reg assembly is rather large. You also will probably have to bypass the Tekk's own 5V regulator and use the batteries alone in series.

Note this:

1.2V typical dropout voltage, 2.0v maximum at full load

What that means is 5V in will give you ~ 3.7V out.

Have you built many mods?

 

[Java_Az]

PWM=Pulse-width modulation. I am not even going to try to explain it so here is a link to the wiki that does Pulse-width modulation - Wikipedia, the free encyclopedia

You are going to have to give me more to work with than just PWM. I am not familiar with the term.

 

[Skyway]

Well there ain't a lot of room in a Tekkeon and that reg assembly is rather large. You also will probably have to bypass the Tekk's own 5V regulator and use the batteries alone in series.

Note this:

What that means is 5V in will give you ~ 3.7V out.

Have you built many mods?

I most likely will not be using the Tekkeon's case. To fragile but I will know more when I get it in my hands. I have seen a bunch of them an noticed that the plastic is cracking for some. I also want to make this mod more hand friendly.
I have built a couple. Not as many as most on the more known people on here. Most of mine have been pretty basic but I use to dabble in electronics when I was younger and I work well with soldering and making circuit boards. I just need a reminder on some of the circuitry as of late since most of that stuff was when I was younger.

 

[WillyB]

Well you could also consider this all in one solution for about $11.

DC-DC Converter Board regulator In:3-30V Out:1.3-18V - eBay (item 300459975900 end time Jan-22-11 22:28:48 PST)

It's about 1.5 x 1.5" and .5" tall.

And it does in fact use PWM.

 

[Skyway]

As I stated in another thread, unfortunately he does not have any more at this time. My guess is the seller does not want to put that he is currently out of them for he would loose future sales. I ordered 2 of these and he sent me an email saying he would be out of stock until February. He has not bothered to change the item as showing more than 10 available.

I see there is a seller from hong kong that is selling the same item and they put this on their description.
NOTE:it s better to work below 2A, the input voltage should be 1.5v more than the output voltage.
Not sure this would work for me. The tekkeon board give 5v and I am looking for variable and stearing towards 4.2v as more normal range.
Is there maybe just a step down voltage circuit that I can use to just bring it down from 5v to 4.2v?

 

[WillyB]

Is there maybe just a step down voltage circuit that I can use to just bring it down from 5v to 4.2v?

That actually would be quite simple using a diode, and you could use a simple slide switch (it will handling the full load so a 3A is best) to cut it in or out for a two voltage mod.

The rule of thumb is usually a ~0.7V drop. But if you want less you could check the datasheets of various Schottky types that claim 0.5V drop.

Ralph T tested the easy to get RS diodes at 0.82V actual drop.

http://www.e-cigarette-forum.com/forum/battery-mods/70759-no-resistor-regulator-5v-box-mod.html

You would install it last in line before your atty connector.

This one claims a 0.5V drop.

SB330S-E3/54 Vishay Schottky (Diodes & Rectifiers)