Alt-BEAM Archive
Message #04489
To: beam@sgiblab.sgi.com
From: Chiu-Yuan Fang chiumanfu@home.com
Date: Mon, 14 Jun 1999 17:04:38 -0700
Subject: [alt-beam] Re: MOTOR DRIVER QUESTION
The H-bridge is best for hacked servos and other high current motors.
74XX240 is a quick and dirty solution for motors that consume < ~70mA.
The Z-bridge makes very cleaver use of the 74XX139 decoder. The two "error"
states can be used for extra functionality.
Chiu
SG wrote:
>
> ok, nobody answered my question so i'll ask it again.
>
> is there any preference on motor drivers?
> h-bridge, z-bridge, 74hct240 IC (miller's tutorial) ?
>
> h-bridge was kinda tricky, (ruined em on my 1st two trys) but i can master
> it if you guys think it's wrth the effort.
> local elec supply shop wants $1.40 each for their 2N3904 transistors
> thats over $10 for two h-bridges (four "04's" each h-bridge) and the IC
> only cost $1.20 at Rat Shack.
> sooo. anyone have luck with one more than the other?
> Soldering iron is waiting for some feedback b4 it gets pluged in.
> would appreciate any help
> -Sparky
--
Chiu-Yuan Fang
chiumanfu@home.com
ICQ=5614919
http://www.geocities.com/SouthBeach/6897/beam2.html
------------------------------------------------------------------------
eGroups.com home: http://www.egroups.com/group/alt-beam
http://www.egroups.com
- Simplifying group communications
Home