Battery backup for car dvd player

[florry44]

Hi,
I am new to this and this will be my first ever attempt to do anything in the wonderful world of electronics. As I said I am very new to this so please excuse me (and correct me) if I make any mistakes.

My children have a car dvd player that runs from the cigarette lighter. The problem is when ever I turn off the ignition briefly the dvd player resets itself. How can I build a VERY (remember, first project!!!) simply PCB to sit between the power supply and the dvd player and maintain the power. I believe the dvd runs of 9v dc.

I have searched on line and can't find what I am looking for.

Thanking you all in advance.

 

[Hero999]

The simplest solution is to connect the DVD player directly to the battery which is permanently live.

Another option is to connect a small 12V sealed lead acid battery in parallel with the cigarette lighter socket so it remains powered at all times. The battery should have a fuse in series with it and you should make sure you don't leave your DVD player connected when no in use, otherwise it'll flatten the battery.

 

[florry44]

thanks Hero for your reply, it is not really an option to hardwire direct to the battery.  I am not too sure about having a lead acid battery around the kids with thier little fingers. What I was hoping for was a small board that I could make that I can plug the cigarette lighter into, I also have a 9 volt rechargable battery that I could "plug" in which would produce a constant 9 volt supply to the dvd player if the main power source fails, (the ciggy lighter is a 12 to 9v transformer)

 

[Hero999]

I doubt a little 9V battery will be able to supply the current required for a DVD player even for short periods of time.

You can get small sealed lead acid batteries which are non-spillable and pretty safe if mounted in a child proof container.