Voltage regulator with alternate voltage source...

[wulfman]

You should be just fine.

On 4/7/2016 1:38 PM, Bill Sudbrink wrote:
> If you have a circuit which is normally designed to
> operate with an unregulated supply, through a regulator...
> say unregulated +8 through a 7805 to a regulated +5 and
> you want to test it independent of the +8 supply, if
> you leave the unregulated rail unattached and put +5
> switcher straight onto the regulated +5 rail, will you
> damage the 7805?  Clearly the VIN is open, but the ground
> pin will still be attached.  Would this push voltage
> back through and screw things up?
>
> Thanks,
> Bill S.
>
>
>


-- 
The contents of this e-mail and any attachments are intended solely for the use of the named
addressee(s) and may contain confidential and/or privileged information. Any unauthorized use,
copying, disclosure, or distribution of the contents of this e-mail is strictly prohibited by
the sender and may be unlawful. If you are not the intended recipient, please notify the sender
immediately and delete this e-mail.