[sdiy] Update! Re: 78xx regulator gives negative output halfthetime

megaohm megaohm1 at gmail.com
Sat Oct 30 08:03:01 CEST 2010

On Fri, Oct 29, 2010 at 6:20 PM, Paul Perry <pfperry at melbpc.org.au> wrote:
> Now I think about it, have you tried a diode to ground after the 78xx,
> so that if the 79xx comes up first, it doesn't put a momentary negative
> voltage to the output of the 78xx?

This very thing happened to me a month or so ago. Diodes on both regs fixed it.

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