Motor drive circuit and motor drive system using the circuit thereof

摘要: A motor drive circuit comprising, an amplifier which receives output signals of a Hall element for determining the phase rotor in single DC and outputs same after amplification; signal generating amplified amplifier, generates first second pulses each having duty about 50% phases differ by 180° same; connected to terminal motor. The circuits including, transistor supplies current motor, sinks from motor; diode bypasses flown out toward power source line side.