If the source of supply is d.c. (for example in a battery vehicle or a rapid transit system) a chopper-type converter is usually employed. The basic operation of a single-switch chopper was discussed ...

For motor applications, engineers have several options at their disposal. Typically, engineers can choose between direct-current (DC) or alternating-current (AC) motors. Machine Design has covered the ...

The 22ECP35 two pole brushless DC motor, parts of Portescap’s Ultra EC series, offer 30% more continuous torque and 100% more power than similar motors. The motor features the company’s Ultra coil ...