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Voltage vs. Amperage and Safety

Nocebo

Nocebo

Hi I've been lurking for a while but I have finally made an account mostly to post this question.
[Note: I know this isn't battery related but I couldn't find a better place to put it but mods please move it to the proper area if necessary]
I am looking at building a wall powered vape for home use, But I am having some trouble with the power supply. The power supply I am looking is controllable with a max of 23V and 2A, so if I'm correct that will come out to 46W. Most vapes seem to have a very low voltage and a higher amperage. I am wondering if higher voltage is a safety concern, or if it will even work?
 
IMFire3605

IMFire3605

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Nocebo said:
Hi I've been lurking for a while but I have finally made an account mostly to post this question.
[Note: I know this isn't battery related but I couldn't find a better place to put it but mods please move it to the proper area if necessary]
I am looking at building a wall powered vape for home use, But I am having some trouble with the power supply. The power supply I am looking is controllable with a max of 23V and 2A, so if I'm correct that will come out to 46W. Most vapes seem to have a very low voltage and a higher amperage. I am wondering if higher voltage is a safety concern, or if it will even work?
Click to expand...

It is a bit relative when you ask, highest voltage I've seen on a vape is about 14V DC on a 4s LiPo unregultated. Many of the regulated mods are in the dual or triple battery category giving a range of 8.4v to 12.6 max voltage. Still to do enough work, 2A really won't cut it, I'd say 5A plus an extra 5amp for safety room incase of a short, at 23V to stay in the 2amp range you'd need a 12ohm coil for the resistance factor, unless you are making your own coils and you'd have to use 32, 34, upto about 42 AWG Kanthal A1 to even hope to have enough resistance per inch of wire to achieve it.
 
Nocebo

Nocebo

IMFire3605 said:
It is a bit relative when you ask, highest voltage I've seen on a vape is about 14V DC on a 4s LiPo unregultated. Many of the regulated mods are in the dual or triple battery category giving a range of 8.4v to 12.6 max voltage. Still to do enough work, 2A really won't cut it, I'd say 5A plus an extra 5amp for safety room incase of a short, at 23V to stay in the 2amp range you'd need a 12ohm coil for the resistance factor, unless you are making your own coils and you'd have to use 32, 34, upto about 42 AWG Kanthal A1 to even hope to have enough resistance per inch of wire to achieve it.
Click to expand...

Thanks for the response. I'm assuming that the resistance you mentioned would be what is needed to prevent a short circuit? How was this calculated?
Sorry for all the questions but I'm pretty new to electronics
 
IMFire3605

IMFire3605

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Member For 3 Years
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Basic Ohms Law Calculator, just added the 23v and 2A, shows about 46watts at 11.xxx ohms. Just need two of the 4 variables, the calculator figures out the other two figures, volts, resistance, amps, watts.

Can find a simple one and a lot of vaping programs at the below link
http://www.steam-engine.org/
 
VaporCat

VaporCat

Bronze Contributor
Member For 4 Years
As IMFire mentioned, if you're willing to build to 11 ohms, that puts you right around 2A and 48watts, but please take note of all the safety measures included in the link I posted, you really don't want to skimp on any of them, namely...

- The use of a fast-acting fuse or PTC in the DC path that trips before your power supply.
- A power supply that has multiple forms of protection (overcurrent, thermal, short circuit).
- A power MOSFET in the switch circuit so that the fire switch doesn't see the current being drawn by the atomizer.
- Appropriate gauge wire for current/power requirements in everything.

Hope this helps, be safe out there.
 
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