Looking for good circuit diagram for reverse polarity protection to use with a DNA25/30/40 chip

[jblack741]

I'm want to build in reverse polarity protection for use with Evolv dna series chips because they don't have it built in. I'm building both a dual parallel 18650 and 26650 boxes and plan to use a dna 40 for the 26650 box and a DNA25 for the 18650 box.

Thanks in advance.

jb

 

[drmarble]

I'm want to build in reverse polarity protection for use with Evolv dna series chips because they don't have it built in. I'm building both a dual parallel 18650 and 26650 boxes and plan to use a DNA 40 for the 26650 box and a DNA25 for the 18650 box.

Thanks in advance.

jb

The latest generation evolv DNA chips do have reverse battery protection. This includes the DNA 40 and DNA 25 boards. Just build them. The protection is built in. It is the DNA 30s that need external protection.

 

[jblack741]

The latest generation evolv DNA chips do have reverse battery protection. This includes the DNA 40 and DNA 25 boards. Just build them. The protection is built in. It is the DNA 30s that need external protection.

Thanks but none of the documentation state this. I know the 30 does not, I've burned one up sadly enough. I've submitted an email to Evolv for clarification so I don't make any assumptions.

Thanks again.

 

[Visus]

Here ya go

http://www.e-cigarette-forum.com/fo...rcurrent-reverse-polarity-protection-dna.html

 

[rhelton]

Pretty simple and cheap I really like how vapor shark puts a audible alarm instead of a led its a great idea.

 

[jblack741]

Here ya go

http://www.e-cigarette-forum.com/fo...rcurrent-reverse-polarity-protection-dna.html

Thanks Visus, great info!

 

[dr g]

Thanks but none of the documentation state this. I know the 30 does not, I've burned one up sadly enough. I've submitted an email to Evolv for clarification so I don't make any assumptions.

Thanks again.

It is mentioned at the 1 minute mark of the official product video: https://www.youtube.com/watch?v=JO1c5IiOwjU
It has been mentioned in just about every interview with Evolv and review of the product as well.
It is also .. shall we say, empirically tested and proven.

However you are right that it is not in writing anywhere, which is odd since it's a significant new feature. You should let them know it's missing, hopefully they will add it.