Need help with electricity connection in vehicle !

Thread Starter

arjch

Joined Apr 22, 2014
1
Hello,

I am having some serious trouble with the devices placed in a vehicle, I am trying to add devices to it and get them powered during the start of the vehicle.

Electricity Source: DC 12V { Battery }
CONVERTER - [ DC -> AC ] 12V
ADOPTER - 12V AC -> 6V AC

Devices Power requirement->
5V AC + 1.2 Amp [Device 1]
WIFI Dongle dont know the power requirements it also requires 5V AC

Graph is also added


The devices circuits are failing due to fluctuating current from the battery, thus the reading of electricity is also different, can you help me achieve this, without increasing the price significantly !
Thanks in advance.....

- Arjch
 

ErnieM

Joined Apr 24, 2011
8,377
During starting the starter motor is drawing a huge amount of current, and the battery voltage does drop significantly.

It will take some work to create either a separate battery supply (with a diode so the started can't pull from it) or increase the range the DC-AC converter works, or add a switching pre-regulator in front of the DC-AC.
 

Georacer

Joined Nov 25, 2009
5,182
How are you connecting your devices to the car battery? Via the lighter plug or directly through a wire tapped on the battery or a fuse box?
 
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