Re: 12 vdc

[Matt Ion <soundy106@xxxxxxxxx>]

Rich wrote:
> Who's a good tech?
>
>
>
> I need a circuit drawn Using a 12 V DC 8 AH batteries, zener's and
> components to get 9 Volts DC for a 1 amp load.
>
> And 7.6 Volts DC for a 2 amp load.
>
>
>
> Would some one draw one?

Just pick up an LM7809 +9VDC/1A 3-pin voltage regulator module and wire
it according to the diagram on the back of the package.

If memory serves (I haven't really worked with this stuff in about a
dozen years) you can adjust the output voltage by lifting the ground leg
with a resistor... or a variable resistor to make it adjustable.

Or just use an LM317 -
http://ourworld.compuserve.com/homepages/Bill_Bowden/page12.htm - where
it shows the transformer and bridge rectifier, substitute your battery.