Hydraulic-Electric Analogies: DC Motors, Part 5 (.PDF Download)

July 31, 2015

The conventional dc motor consists of stationary pole pieces, a rotor coil comprised of one or more turns of a conductor, a series of commutator segments (two for each coil on the rotor), and a pair of brushes to link current from the outside stationary world to the motor interior’s rotating world. Commutator segments are typically made of copper and the brushes consist of graphite. Both are conductors, plus the graphite provides a solid lubricant between the copper and graphite leading to longer brush life...

Register or Sign in below to download the full article in .PDF format, including high resolution graphics and schematics when applicable.

Sponsored Recommendations

7 Key Considerations for Selecting a Medical Pump

Feb. 6, 2024
Newcomers to medical device design may think pressure and flow rate are sufficient parameters whenselecting a pump. While this may be true in some industrial applications, medical...

How Variable Volume Pumps Work

Feb. 6, 2024
Variable volume pumps, also known as precision dispense pumps, are a positive displacement pump that operates by retracting a piston to aspirate a fluid and then extending the...

What is a Check Valve and How Does it Work?

Feb. 6, 2024
Acheck valve, a non-return or one-way valve, is a mechanical device that allows a gas or liquid to flow freely in one direction while preventing reverse flow in the opposite ...

The Difference Between Calibrated Orifices and Holes

Feb. 6, 2024
Engineers tasked with managing fluid flow talk about both holes and calibrated orifices, but they are two distinct entities. A hole can be any opening, but a calibrated orifice...