about momentary push buttons~

[Feeq]

Hi to all,

I need to ask about push buttons as im making my own mechanical box mod(2x18650). I saw stuffs like (DC36V 3A ~~~) or (12V 3A) . what does it mean? and any suggestions for momentary push buttons for my 2x18650 mechanical box mod? Help is greatly appreciated!

 

[DavidOck]

No specific suggestions, but the switches are rated for maximum applied voltage and maximum current. If you exceed either, the switch will fail, i.e. burn, weld it's contacts, melt...

So as long as your home built doesn't go over either max rating, whatever fits your build should work.

 

[Boden]

I highly recommend using MOSFETs to protect the button

 

[Feeq]

I highly recommend using MOSFETs to protect the button

should i just get a AC switch instead?

 

[Boden]

should i just get a AC switch instead?

???

 

[Feeq]

???

theres like ac push buttons (e.g 240V AC 3A ) . there is in amazon :/

 

[roxynoodle]

No, no, AC switches aren't going to work for DC applications. I don't think. You want a Mosfet for your switch.

 

[Boden]

I think you need to stop planning your box and do some more learning first.

NONAMé Box Mods Store

 

[Feeq]

I think you need to stop planning your box and do some more learning first.

NONAMé Box Mods Store

well, i am asking am i..

 

[Feeq]

No, no, AC switches aren't going to work for DC applications. I don't think. You want a Mosfet for your switch.

well why some of them dont put a mosfet in their mech d.i.y ?

 

[edyle]

theres like ac push buttons (e.g 240V AC 3A ) . there is in amazon :/

It is really the amp rating that is important.

The best way to deal with high current is making your own physically big metal-to-metal contact switch

 

[Feeq]

so two 18650 batts = 2 x 3.7V?

 

[roxynoodle]

well why some of them dont put a mosfet in their mech d.i.y ?

I'm not ignoring you. I just don't know the answer. But it seems to me the mech boxes not using a mosfet make the battery connection by using a metal arm that touches the positive of the battery(s) when the button is pushed. So, a fully mechanical method of completing the circuit rather than an actual button switch.

 

[Bunnykiller]

to have a switch with the rating (MTBF) manufacurers time before failing, the switch should be rated for 10-25% above the maximum supplied amps. Unfortunately, there arent too many switches in the size we use to handle 30-60A....

 

[vapero]

I've always made my own buttons so no need for a MOSFET it isn't hard

Sent from my Nexus 5 using Tapatalk

 

[DavidOck]

so two 18650 batts = 2 x 3.7V?

If in series, yes, you add the voltages. Bear in mind that fully/freshly charged, they'll be at 4.2, so 8.4 would be the maximum total voltage in series.

Calculate the max current at closer to the lowest voltage. Seems that many who run mechs opt to swap out batteries when they get down to about 3.6, as the vape falls off at lower voltages.

 

[edyle]

so two 18650 batts = 2 x 3.7V?

in series

but when making a mech box, normally people use batteries in parallel.
in parallel , if you put the batteries in the wrong way, you can get instant short circuit

 

[OfTheBrave]

Hi to all,

I need to ask about push buttons as im making my own mechanical box mod(2x18650). I saw stuffs like (DC36V 3A ~~~) or (12V 3A) . what does it mean? and any suggestions for momentary push buttons for my 2x18650 mechanical box mod? Help is greatly appreciated!

I have to agree with others here. Don't order or assemble anything until you have a better understanding of electricity.

I myself, am not an expert but from what i understand, most people who build "Mech Boxes" (more commonly called Unregulated Box Mods) will use a MOSFET so that the current load does not pass through the switch.

 

[Feeq]

i see, its just my future plans actually

 

[lamarrk]

Moved to MODDING FORUM.