Supply different voltages using a dual dc supply?

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To power two ICs requiring -10V and +10V, and one IC needing -5V and +5V, a dual DC supply can be utilized effectively. A 7805 and 7905 voltage regulator can be employed to derive the +5V and -5V from the respective +10V and -10V rails. It's essential to ensure that the 10V rails can provide sufficient current for all connected ICs. Alternatively, for smaller current requirements, two 5V Zener diodes could also be a viable solution. Proper voltage regulation is crucial for the stable operation of the ICs.
riie
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Hi all,

I have
- 2 ICs that requires -10v and +10v
- 1 IC that requires -5v and +5v

How can I power them using one dual dc supply?

Thanks!
 
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use a +5V and a -5V regulator off the respective +10 and -10V rails
easy as pie :)

just make sure your 10V rails are able to supply the required current for the 10V IC(s) as well as the 5V IC(s)

Dave

Dave
 
Forgot to mention that the dual dc supply is a variable supply used in lab.

So just to confirm, I need a 7805 and a 7905 voltage regulator for +5v and -5v respectively?
 
regardless of if its a variable supply, you will have it set at 10V anyway, so yes a 7805 and 7905

You have no reason to be continuously varing the voltage do you ?

Dave
 
I should have thought that two 5V Zener diodes could do the job nicely - if your +-5V current requirement is small.
 

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