Alt-BEAM Archive

Message #04500



To: beam@sgiblab.sgi.com
From: Jean auBois aubois@trail.com
Date: Mon, 14 Jun 1999 22:10:02 -0600
Subject: [alt-beam] Re: MOTOR DRIVER QUESTION


At 8:03 PM -0600 6/14/99, Chiu-Yuan Fang wrote:
:Yes but you may have to stack 3 or more chips to handle enough current.
:It may
:end up being more expensive than h-bridges.

Dumb question: how much current is required to (a) handle the input signal
and (b) source/sink of the driver? Eventually, doesn't one want to
graduate to low R(on) FETs or (horrors!) even relays? Does anyone have a
rule-of-thumb as to what sort of technology you'd use given certain
parameters? Couldn't someone develop a rough chart of this info with, oh,
say prices in the rightmost column?


jab



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