[SI-LIST] : DC Motor question

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From: SEOW,ERWIN-SP (HP-Singapore,ex1) (erwin-sp_seow@hp.com)
Date: Wed Nov 08 2000 - 17:34:16 PST


Hi all,

I have a question about DC motors.

Lets say I have a DC souce connected to a DC motor. The motor is running for
a while, what happens when I disconnect the switch at time t=0? Please see
attached figure.

Which is the dominating factor of current flow? The armature inductance or
the back EMF?? If I neglect back EMF, the circuit will be easily explained.
Do back EMF come into this picture?

Any comments??

Erwin Seow

email: erwin-sp_seow@hp.com



motor.jpg

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