fernando.melo
Posts: 8
Joined: Tue Jul 10, 2018 6:14 pm

Cigar plug adapter for PI power

Tue Oct 02, 2018 3:23 pm

Hello there,

Can I use a phone charger like this with Raspberry Pi 3 model B+ ?
https://produto.mercadolivre.com.br/MLB ... 2a-873-_JM

I'm asking because I was using a DC buck converter to step 12V down to 5V, the problem was: It killed my Raspberry pi 3 model B (not plus).
I guess it was not stable enough and maybe it has oscillated too much. The Pi lived on my car for about 6 months without problem, but now it is gone.

I'm going to buy the Pi 3 model B+ (plus) but i need to find a good power source to use it on a car, we know that cars can provide voltages that ranges from 11.7V when the car is turned off to 13.8V when the car is on and at higher RPMs. I know that it can go even lower than 11.7V (when the battery is discharged) and can have spikes over 13.8V (when a headlight or AC is turned off, releasing its load suddenly).

If somebody knows what kind of phone charger, or even better, a power supply that I can use to safely power my Pi on a car, please help me!

Thanks a lot!

mosespi
Posts: 508
Joined: Mon May 12, 2014 3:35 pm
Location: 34,-118
Contact: Website

Re: Cigar plug adapter for PI power

Tue Oct 02, 2018 7:59 pm

Check this out: http://www.allspectrum.com/mopower/

My design. It has a wide input voltage range (up to 30VDC) and an automotive grade TVS (transient voltage suppressor). You don't need to use the UPS functions if not needed.. but it is capable of turning the Pi on and off based on input voltage, among other things. Many have been installed in cars (including my own) and industrial alternator charged equipment. Works well.

Do keep an eye on moisture. High and low temperatures are one thing.. but any condensing moisture on electronics will kill it quick.

Regards,
-Moses
Power problems? MoPower UPS for the Pi
http://www.allspectrum.com/mopower/

fernando.melo
Posts: 8
Joined: Tue Jul 10, 2018 6:14 pm

Re: Cigar plug adapter for PI power

Tue Oct 02, 2018 9:47 pm

mosespi wrote:
Tue Oct 02, 2018 7:59 pm
Check this out: http://www.allspectrum.com/mopower/

My design. It has a wide input voltage range (up to 30VDC) and an automotive grade TVS (transient voltage suppressor). You don't need to use the UPS functions if not needed.. but it is capable of turning the Pi on and off based on input voltage, among other things. Many have been installed in cars (including my own) and industrial alternator charged equipment. Works well.

Do keep an eye on moisture. High and low temperatures are one thing.. but any condensing moisture on electronics will kill it quick.

Regards,
-Moses
Hey!
Thanks a lot! This solution looks very promising, I'll take a deep look into it.

Best regards!

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