Motor speed control circuit
A speed control, speed voltage technology, applied in the direction of DC motor speed/torque control, single-phase motor control, AC motor control, etc., to achieve the effect of improving accuracy
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[0027]
[0028] Referring to FIGS. 2 to 9 as appropriate, a configuration example of the motor speed control system of the present invention will be described based on FIG. 1 .
[0029] The motor speed control system shown in FIG. 1 includes: a motor 100 to be controlled, a motor driver IC 200 ("first circuit" of the present invention), and a motor speed control IC 300 ("second circuit" of the present invention). That is, the "motor speed control circuit" of the present invention is a case of a two-chip structure in which the motor driver IC 200 and the motor speed control IC 300 are respectively integrated on one chip. In addition, the "motor speed control circuit" of the present invention may be a case where the motor driver IC 200 and the motor speed control IC 300 are integrated on one chip.
[0030] The motor 100 is a so-called single-phase motor having a single-phase drive coil, and a so-called Hall motor in which a Hall element 110 is fixed to a stator. In addition, ...
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