| ??? 04/02/09 14:51 Read: times |
#164232 - I didnt say the lowest cost Responding to: ???'s previous message |
Erik Malund said:
the one from the list that can handle 7A require 8 (EIGHT) devboards
or, did you not even look, but just got excited about the phrase "low cost" and refer to the 500W appnote Erik Ap said:
Another Low cost design here , I think it has everything from Codes to Schematic drivers everything you need to study. Key Characteristics Medium construction complexity, multiple fields on stator, cage on rotor High reliability (no brush wear), even at very high achievable speeds Medium efficiency at low speed, high efficiency at high speed Driven by multi-phase Inverter controllers Motor EMI good but…terrible EMI from Inverter Sensorless speed control possible Low cost per horsepower, though higher than for 1-ph AC induction motor Higher start torque than for 1-ph, easy to reverse motor Inverter ‘shoot-through’ possible, requires ‘dead-time’ circuits & compensation ...... -Ap How much Low cost according to you is low? . I mean If you manufacturer something in US you pay more than if you manufacture same thing in Taiwan . -AP |
