How can we make -ve Power Supply

[Nitin]

Hello Friends
This is Nitin Dhaneshwar,Asking all of you how can we make -ve power
supply
In this power supply the load is 5 & 12 volt .Can we make both -ve &
+ve
power supply.
I wanna make +5,-5,+12,-12 power supply in single goard
Is it possible?

 

[Ken Smith]

In article <1138085018.880485.169700@f14g2000cwb.googlegroups.com>,
Nitin <nitin4_2005@rediffmail.com> wrote:

Hello Friends
This is Nitin Dhaneshwar,Asking all of you how can we make -ve power
supply
In this power supply the load is 5 & 12 volt .Can we make both -ve &
+ve
power supply.
I wanna make +5,-5,+12,-12 power supply in single goard
Is it possible?

If the load is light:

Start by making a +15 and -15V supplies.

Use LM7812 and LM7912

Use LM7805 and LM7905




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kensmith@rahul.net forging knowledge