Alt-BEAM Archive
Message #01420
To: Justin jaf60@student.canterbury.ac.nz
From: Chiu-Yuan Fang chiumanfu@home.com
Date: Tue, 09 Mar 1999 16:10:04 -0800
Subject: [alt-beam] Re: Surface mount H-bridge chip
Terry used these in his CPU photovore
http://www.nc5.infi.net/~wtnewton/otherwld/robot4.html
Chiu
Justin wrote:
>
> I don't know if you already know about this, but I was browsing through
> a big component catalog yesterday, and came across an h-bridge in a
> surface mount packahe (8 lead SOT-223).
> I'm not a big user of h-bridges, so I don't know if it's suitable for
> BEAM, but comparing the schematics shows that this h-bridge is just the
> four central transitors (2 npn and 2 pnp) thus, you'd need to add the
> other two transistors yourself to take the four inputs down to the more
> useful two.
> The price is quite high (about US$3.50), but if anyone is interested I
> can copy out the stats, and you can find out if they're suitable.
> If you want to look for it yourself, it's the ZHB6790, description: SM-8
> Quad packaged transistors. Manufactured by Zetex.
> There is also the ZHB6718, which is the same thing, except the
> transistors won't carry as much.
--
Chiu-Yuan Fang
chiumanfu@home.com
ICQ=5614919
http://www.geocities.com/SouthBeach/6897/beam2.html
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