Subject:
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Re: 9v Gear Motors
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 9 Jun 2000 20:17:02 GMT
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Viewed:
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765 times
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Dave, A shorted to B (disconnected from the battery) might work if the motor
acts like a generator when you turn it. But you try it. Even the smallest
change in angle is resisted and with no spring-back. Un-motor-like.
Jerry
In lugnet.robotics, dave madden <dhm@mersenne.com> writes:
> =>From: "Jerry Kalpin" <jdkalpin@sympatico.ca>
> =>...
> =>if there are three states: on, off and float, there must
> =>be more than 2 terminals in use.
>
> No, with two terminals (A & B), you can get:
>
> * A positive with respect to B => motor runs in one direction
> * B positive with respect to A => motor runs in the other direction
> * A connected/shorted to B => motor resists turning
> * A unconnected to B => motor turns freely
>
> regards,
> d.
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Message has 1 Reply:
 | | Re: 9v Gear Motors
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| =>From: "Jerry Kalpin" <jdkalpin@sympatico.ca> =>... =>Dave, A shorted to B (disconnected from the battery) might work if the motor =>acts like a generator when you turn it. The motor *does* act like a generator when you turn it! Every once in a (...) (24 years ago, 9-Jun-00, to lugnet.robotics)
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Message is in Reply To:
| | Re: 9v Gear Motors
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| =>From: "Jerry Kalpin" <jdkalpin@sympatico.ca> =>... =>if there are three states: on, off and float, there must =>be more than 2 terminals in use. No, with two terminals (A & B), you can get: * A positive with respect to B => motor runs in one (...) (24 years ago, 9-Jun-00, to lugnet.robotics)
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