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From: "Rob Butts (r DOT butts2 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Wed, 21 Aug 2019 11:10:13 -0400
Message-ID: <CALSZ9gqYUPhNHCG+p8AbhWoGSnu4Aa-JsY0XpHD-c_nRcDfEpQ@mail.gmail.com>
Subject: Re: [geda-user] 3V to 12V converter
To: geda-user AT delorie DOT com
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Reply-To: geda-user AT delorie DOT com

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Thanks everyone.  I'm going to go with the LM2577 which has some same
footprint alternatives if the Vin minimum needs to be lower.

On Tue, Aug 20, 2019 at 6:32 PM John Griessen (john AT ecosensory DOT com) [via
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

> On 8/20/19 4:49 PM, John Griessen wrote:
> > Here's something I used with functional results.  I have not looked at
> it with
> > a spectrum analyzer for generated noise yet...  But scope probing near
> it doesn't seem bad.
> >
> > https://www.cibolo.com/docs/pyflex_f401_power_18V.png
>
>
> Whoops, that one I used is current limiting at 350 mA on purpose...
>
> 12V and 1A is 12 Watts, so it will need heat sinking area in the layout.
>
>
>

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<div dir=3D"ltr">Thanks everyone.=C2=A0 I&#39;m going to go with the LM2577=
 which has some same footprint alternatives if the Vin minimum needs to be =
lower.</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_=
attr">On Tue, Aug 20, 2019 at 6:32 PM John Griessen (<a href=3D"mailto:john=
@ecosensory.com">john AT ecosensory DOT com</a>) [via <a href=3D"mailto:geda-user@=
delorie.com">geda-user AT delorie DOT com</a>] &lt;<a href=3D"mailto:geda-user AT del=
orie.com">geda-user AT delorie DOT com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex">On 8/20/19 4:49 PM, John Griessen wrote:<b=
r>
&gt; Here&#39;s something I used with functional results.=C2=A0 I have not =
looked at it with<br>
&gt; a spectrum analyzer for generated noise yet...=C2=A0 But scope probing=
 near it doesn&#39;t seem bad.<br>
&gt; <br>
&gt; <a href=3D"https://www.cibolo.com/docs/pyflex_f401_power_18V.png" rel=
=3D"noreferrer" target=3D"_blank">https://www.cibolo.com/docs/pyflex_f401_p=
ower_18V.png</a><br>
<br>
<br>
Whoops, that one I used is current limiting at 350 mA on purpose...<br>
<br>
12V and 1A is 12 Watts, so it will need heat sinking area in the layout.<br=
>
<br>
<br>
</blockquote></div>

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