Alt-BEAM Archive
Message #02896
To: beam@corp.sgi.com
From: Pam Farrar pamsplace@acadia.net
Date: Mon, 3 May 1999 17:21:48 -0400 (EDT)
Subject: [alt-beam] stuff
***SEND REPLIES TO evandude@yahoo.com (or the list)***
Okay, dumb question. I forget the difference between NPN and PNP
transistors. Also, couldn't you use the direction pin of a 74HC245 to
choose the direction of the drivers, i mean why use 4 for one way and 4 the
other when you can add some simple modifications to the circuit and have *8*
drivers for each direction? The only thing I can think of is maybe the
drivers have to be on a certain side of the motor relative to the power
supply... you know, the arrows that are the representations of the
inverters or whatever in the chip, can they be facing away from the motor as
well as at it? I dunno, i hope you can understand my ramblings
***SEND REPLIES TO evandude@yahoo.com (or the list)***
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