| 摘要 |
A circuit for minimizing the current spikes in through the stator coils in a brushless dc motor is disclosed. The circuit includes a voltage amplifier for receiving an input signal voltage and a feedback voltage, a compensation circuit for compensating the output of the voltage amplifier, a second voltage amplifier for amplifying the compensated output, a switch for selectively connecting compensated output to the stator coils, and a conductive path for discharging the compensation circuit when the switch is not conducting. The conductive path can be a transistor or a transistor in series with a voltage reference device. The invention reduces the commutation noise and the dynamic power requirement in a brushless direct current motor.
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