There are different types of field exitation modes. Some of them are

  1. Shunt wound
  2. series wound and
  3. permanent type

So, what type of motor is 775 DC motor? i have tried to search the type from different websites but found nothing which describes the type of motor


DSD-775 HIGH POWER DC MOTOR WEBSITE: http://www.dsdmotor.com/ProductShow.asp?ID=271


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I also need to know the resistance value, the inductance value and the inertia of the motor?


  • \$\begingroup\$ Welcome to EE.SE. On this site we thank afterwards by upvoting useful answers and accepting the best one that answers the question. \$\endgroup\$ – Transistor Apr 17 at 15:53

Tiny motors like that are permanent-magnet motors. Available two-winding motors are much larger and are not widely available because permanent-magnet motors are taking over the market. The resistance can probably be assumed to be nominal voltage divided by stall current. Since the motors are not intended for high performance, the inductance and inertia will probably be difficult to determine. The seller or even the manufacturer may not have that information.

  • \$\begingroup\$ thanks for the answer. But can i get a website which tells me it is a permanent magnet or some type of datasheet which describes construction type \$\endgroup\$ – Socre Apr 18 at 7:07
  • \$\begingroup\$ The web site link that you provided claims to be the manufacturer of the motor. It is unlikely that you will find more information elsewhere. Offers for email and chat help pop up constantly at that site. Have you tried them? The web page identifies the motor as brushed DC. I can assure you that the excitation is permanent magnet. Wound-field DC motors are not manufactured in such small sizes. I doubt that they have ever been manufactured in those sizes and production is declining in all sizes. \$\endgroup\$ – Charles Cowie Apr 18 at 13:31

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