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From: John Popelish
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X-Mailer: Mozilla 4.7 [en] (Win98; U)
Subject: Re: Motor control - using voltage ranges
Date: Mon, 13 Jan 2003 21:00:46 GMT
NNTP-Posting-Date: Mon, 13 Jan 2003 16:00:46 EST
Tom Shaw wrote:
> Im trying to develop a small circuit that will enable me to control the
> output of a motor.
> I want to be able to define at what voltage the motor will start to turn,
> and what voltage the motor will be at maximum power.
> using a lo = 3v and hi = 5v, if I supply a 4v input it will supply the motor
> with 6v (or 50% of the available voltage)
> Any help on this would be greatly appreciated.
Are you saying that you have a control signal that swings from 3 to 5
volts, and this is supposed to change the motor voltage
proportionately from some unspecified minimum voltage (that is
approximately the threshold of motion for the motor) to about 12 volts
(the supply voltage)?
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