| 摘要 |
A hall electronic circuit of a brushless motor, comprising an electronic circuit board, wherein the electronic circuit board is provided with at least one hall sensing circuit unit, and each hall sensing circuit unit comprises a hall chip (H1, H2, H3) for detecting a position signal of a rotor. The output end of each hall chip (H1, H2, H3) is connected to a phase inverter (U1, U2, U3), and the hall chip (H1, H2, H3) outputs a detected rotor forward position signal by means of the phase inverter (U1, U2, U3). The hall electronic circuit is simple in structure and can be conveniently switched between counter electromotive force peaks corresponding to a rising edge or a falling edge of a hall detection signal, so that the bad phenomenon which may be caused by the induction of a reverse side of the hall chip (H1, H2, H3) can be avoided, and the maintenance for the electronic circuit board and supporting materials can be reduced. |
