[sdiy] Voltage Regulators

[Ian Fritz]

At 03:44 AM 10/17/2008, JH. wrote:


> >More the 79xx that needs a minimum load.  In my experience 78xx regulate
> >ok with no load (although I think the datasheets still spec a min load).
>
>You can never trust these things, as there are a lot of manufacturers, and
>on brand of regulator may work outside specs, and another might not.

I've heard several reports of that.  I helped one guy get a LP version of a 
7905 to work.  He had it designed and wired properly (it seemed) , but the 
negative side sometimes shut down on power-up.  Apparently from the inrush 
current.  But it didn't look like he had excessive loading.  He went to a 
beefier 7905 and it was fine.

   Ian