| 摘要 |
PURPOSE:To improve the controllability of a pulse driving circuit by providing voltage applying means for producing a mean applying voltage proportional to the pulse generating time of pulse generating means. CONSTITUTION:A pulse driving circuit has a coil 1 of a load, first and second pulse generators 10, 11 for generating pulses phi1, phi2, and switches 20, 21 as voltage applying means. The driving circuit connects the switch 20 through the generator 10 for generating the pulse phi1 with a power source side D (the switch 21 is connected with a ground side G) when an input control value A is positive. when the control value A is negative, the generator 11 connects the switch 21 to the power source side D the switch 20 is connected to the ground side G). Thus, a current to the coil 1 of the load becomes proportional to the pulse generating time by the control value A.
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