Newsgroups: comp.robotics
Path: brunix!uunet!pipex!uknet!dcl-cs!davei
From: davei@comp.lancs.ac.uk (Mr D Ingles)
Subject: Re: looking for a SCR speed control unit....
Message-ID: <1993Jun28.101123.29131@comp.lancs.ac.uk>
Organization: Department of Computing at Lancaster University, UK.
References: <20b6jeINNfdn@master.cs.rose-hulman.edu> <1993Jun25.144520.24601@nrcnet0.nrc.ca> <HATTORI.93Jun28131105@athena.csrd.nkk.co.JP>
Date: Mon, 28 Jun 1993 10:11:23 GMT
Lines: 14

In article <HATTORI.93Jun28131105@athena.csrd.nkk.co.JP> hattori@csrd.nkk.co.JP (Mato Hattori) writes:
>As you said, using SCR rather than FET is much reasonable when we try
>to control BIG motors, like RC car's one.  Usually, RC car's motors
>are so highly tuned, because higher speed gives us much more fun, that
>more than 30 Amperes of DC current flows in control circuit.  It's
>hard to find a FET with such big capacity.

In my last job we used to use 4 quadrant thyristor controllers to drive our
1/3HP DC motors which applied motion to our telemetry antennas.

Davei



