regulate to 5v

[Tarnacc]

Hey folks,

I am looking to build a simple 5v mod. I have read that to do this you make a 3v x 2 mod to equal 6v then use a 5v regulator. Can this same thing also be done with two 3.7 batterys equaling 7.4v or is this too much for the regulator to handle?

I purchased a 5v regulator from radio shack and the packaging indicates that the max in is 35v. That seems awfuly high to my uneducated mind. Can someone please clear that up for me?

 

[Rocketman]

amps are the thing to watch out for. A lot of 5 volt regulators are only rated for 1 amp, if you can keep them from overheating.
The voltage dropped by the regulator times the amps drawn by the atty/carto equals the watts consumed by the regulator and dissipated as heat.


A 3 amp or 5 amp 5 volt regulator can handle the stacked 3.7 volt batteries. You plan on using protected cells, right?

Madvapes has some info on 5 volt boxes.

 

[Lazrah]

Yes you can use 3.7v batts. I have several 5v mods and all use the 3.7v batteries.

The 35v is alot higher than you need. It will still work just fine with the 2x 3v or 3.7v batts you choose to use.

However, unless RadioShack got better regulators in the recent weeks I believe the highest Amp rated reg they have is 1 amp. If this is still the case you should probably order a 3amp reg from madvapes or another supplier. The 1 amp reg from ratshack will work.. BUT, it won't fire your atty nearly as well as a higher amp reg.

I have tried a 1 amp and 3 amp. The difference to me is huge! just my 2 pennies.

 

[Tarnacc]

Thanks for the responses guys. That really helps clear it up for me. Yes I have protected batteries and you are correct, it is a 1 amp regulator dangit. Guess I will not be finishing that mod tonight

 

[Alakar]

This is the regulator I used for my box mode. 5 volt and rated to 3 amps. Works great, and has a control pin so you can use switches with a lower amperage rating.

Madvapes - LDO 5 volt, 3.0 amp regulator with control pin!