Motor spins way to fast. Bearings and brushes will go in no time. Still
looking for a lower voltage drive. The popular MC33886 H-bridge controller
operates from 5 - 30V and all other support chips (quadrature to count,
counters etc.) can be found in 5V versions so don't see why such a drive
doesn't exist. May have to make my own.

Called Gecko on Friday for their take on my scenario but their Tech Support
was out sick. Also, left e-mail in the Gecko Yahoo group but it hasn't
appeared yet.

"william_b_noble" wrote in message
news:1103997627.649303010185c3683aa0ff5057d00f34@t eranews...
Oparr - I'd strongly suggest making a test without the resistor - take the
same measurments - if you are comfortable that the motor is not
overstressed, use it without the resitor (you can add a fuse if you
like) -
in a servo circuit, the series resistor degrades performance and accuracy,
you will be better off without it.

as an aside to those using low voltage motors, the big pile of Minarik
controllers I picked up has a bunch of low voltage DC motor controllers -
in
the 12 to 48 V range - I haven't tested any yet, It will be a few days
before I have access to them again, but if you have interest in the
Minarik
controllers, drop me a note. The DC controllers I have tested are all for
90 to 180VDC motors (with 110 to 220VAC input).


"oparr" wrote in message
news:5Qfzd.8273$113.6842@trndny03...
More than sufficient for the application. With the PS adjusted to 23V and
with a 8 ohm series resistor the voltage fluctuates between 13 and 16V at
the motor indicating a maximum current draw of just over 1A. And this
included loading the table with a 25lb weight (about 25 times what I'll
be
using), stopping and starting etc..

"Richard J Kinch" wrote in message
. ..
oparr writes:

The current at 12V, rated RPM and maximum torque is 2.3A.

Dunno what you application is, but that is a puny motor.