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DPRG: PowerTrends 7805 switching regulator replacement

Subject: DPRG: PowerTrends 7805 switching regulator replacement
From: Kevin Ross kevinro at nwlink.com
Date: Thu Jan 15 13:15:46 CST 1998

You can order samples (1 each) over the internet, which is where I got mine.
Sorry, I can't find the internet address that I used, but perhaps a search
engine would find it.

Kevin

- -----Original Message-----
>From: Daniel Herrington <daniel at adc.nsc.com>
To: dprglist at dprg.org <dprglist at dprg.org>
Date: Thursday, January 15, 1998 10:45 AM
Subject: Re: DPRG: PowerTrends 7805 switching regulator replacement


>You may be able to get a couple of samples for free from the
>manufacturer.  Always give them a call first and ask before
>spending your own money.
>
>Daniel Herrington
>
>
>
>=> Replying to Larry Kerns's message, "Re: DPRG: PowerTrends 7805 switching
regulator replacement" (Jan 15):
> > Jim Brown wrote:
> > >
> > > Have yall seen these drop in switching regulator replacements for
> > > the 78xx series?
> > >
> > > They're a little bigger, it is pinout compatible (input, common,
output),
> > > they're about 85% efficient, plus, they're rated for 1.5a.
> > >
> > > http://www.powertrends.com/pages/pt78st1.html
> > >
> > > The part numbers go like 78st1xx where they're equivalent to 78xx
parts.
> > >
> > > For example, the 78st105 is equivalent to the 7805.
> > > 78st112 is equivalent to the 7812.
> > >
> > > It says it _requires_ a 100uf cap, but I guess power supply designs
> > > should have a hefty cap anyway.
> > >
> > > Anyone off hand know of the street price, or who has them?
> > ===========================================================
> > Jim,
> > Digikey carries them at $18.38 each in single quantities.  Go to Digikey
> > and search for 78st105.  They sell both the horizontal and vertical
> > models.
> > --
> > Will I Dream?
> >
> > Larry W. Kerns
> > kerns at lonestar.rcclub.org
> >
> >
>
>

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