JPS60177696U

JPS60177696U - Stepping motor drive circuit device

Info

Publication number: JPS60177696U
Application number: JP6249384U
Authority: JP
Inventors: 康一南
Original assignee: 株式会社ピ−エフユ−
Priority date: 1984-04-27
Filing date: 1984-04-27
Publication date: 1985-11-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のステッピングモータ駆動回路装置の構成
を示す図、第２図は本考案の一実施例の構成を示す図で
ある。図中、１５は電源電圧端子、１８および２０はバッファ
、１９、および２１は励磁パルス入力端子、２２はＯＲ
ゲート、２３はＮＡＮＤゲート、２４は抵抗、２５は電
流検出用抵抗、２６は電流側−御回路、２７は電流検出
用抵抗の一端、Ｔ３およびＴ４は電流切換用トランジス
タ、Ｔ５は電流制御用トランジスタ、Ｄ３．Ｄ４および
Ｄ５はフライバックダイオードをそれぞれ示す。FIG. 1 is a diagram showing the configuration of a conventional stepping motor drive circuit device, and FIG. 2 is a diagram showing the configuration of an embodiment of the present invention. In the figure, 15 is a power supply voltage terminal, 18 and 20 are buffers, 19 and 21 are excitation pulse input terminals, and 22 is an OR
gate, 23 is a NAND gate, 24 is a resistor, 25 is a current detection resistor, 26 is a current side control circuit, 27 is one end of the current detection resistor, T3 and T4 are current switching transistors, T5 is a current control transistor , D3. D4 and D5 represent flyback diodes, respectively.

Claims

[Scope of utility model registration request]

In a stepping motor drive circuit device for driving a plurality of stepping motors having windings corresponding to an even number of phases, a plurality of circuits each having a current switching switching element connected in series to a corresponding winding of each of the stepping motors is provided. a parallel circuit connected in parallel; a current control switching element connected in series to the parallel circuit and configured to intermittent the current flowing through the winding so that the current flowing through the corresponding winding becomes a constant value; a drive circuit that detects the presence or absence of an excitation pulse input to the current switching switching element, and operates the current control switching element using the presence or absence of the excitation pulse as one condition;
For the two sets of drive circuits, a voltage representing the magnitude of the current flowing through each winding of these two sets of drive circuits is detected, the magnitude of the detected voltage is compared with a reference value, and the comparison result is applied to the drive circuit. A stepping motor drive circuit device comprising: a current control circuit that is supplied and serves as one condition for operating the current control switching element.