Alt-BEAM Archive
Message #04109
To: beam@sgiblab.sgi.com
From: John Mitchell johnm@magnet.com
Date: Tue, 1 Jun 1999 11:14:07 -0400
Subject: [alt-beam] Re: Head, h-bridge problems
On Sat, 29 May 1999 Jojor512@aol.com wrote:
> Hi. I have a few problems with the head I am putting together. It
> works with a small dc motor(no gears), but not with my gear motor,
> which is strange, because they both take the same voltage. I can hear
> the gearmotor trying to move, but it never does. I tried using higher
> voltages with the h-bridge, and nothing worked. Please help!
>
> Will
> jojor512@aol.com
do you have enough current? I've had similar problems with a home-built
H-bridge using junkbox transistors. It'll drive small loads well, but
larger loads poorly if at all.
Are you using the 6-transistor H, or a Hitchcock-style 4?
- j
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