I need -12V to connect a home DVD player in the car.

[2fast4you]

Hi!
First, sorry for my bad english, because i am from Argentina, and I am 17 years old.

The power supply of the DVD player send +9,+5,+12, and -12Vdc.
To obtain +9 I use a 7809 regulator, to obtain +5V i use a 7805, and 7812 to +12V...
Now, i need obtain -12Vdc in aprox. 200 to 500 mA.
How to obtain -12Vdc in a low current (max. 500mA)
Tnx!

 

[Leftyretro]

Hi!
First, sorry for my bad english, because i am from Argentina, and I am 17 years old.

The power supply of the DVD player send +9,+5,+12, and -12Vdc.
To obtain +9 I use a 7809 regulator, to obtain +5V i use a 7805, and 7812 to +12V...
Now, i need obtain -12Vdc in aprox. 200 to 500 mA.
How to obtain -12Vdc in a low current (max. 500mA)
Tnx!

You will need to buy or build a isolated DC/DC converter. You should be able to google for them. Be sure it's a isolated design.

Lefty