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Patent Searching and Data


Title:
DRIVING CIRCUIT OF INDUCTIVE LOAD
Document Type and Number:
Japanese Patent JP2002357237
Kind Code:
A
Abstract:

To provide a driving circuit of inductive load capable of accurately performing a drive of inductive load.

A micro computer 14 inputs a electric current detecting signal 50, power supply voltage Vrs1, and solenoid-side voltage Vrs2, and computes voltage (a true value) between both ends of an electric current detecting resistor 11 from the power supply voltage Vrs1 and solenoid-side voltage Vrs2, and obtains a voltage signal 54 between both ends of the resistor corresponding to the voltage (a true value) between both ends, and then compensates a signal (an electric current reference signal 51, namely, a target signal) corresponding to an electric current supplied to a proportional solenoid 4, based on the voltage signal 54 between both ends of the resistor. Consequently, influence of aged change of an electric current detecting circuit 13 is cancelled, and controlling accuracy of the proportional solenoid 4 is improved.


Inventors:
OTANI HIROYUKI
Application Number:
JP2001165321A
Publication Date:
December 13, 2002
Filing Date:
May 31, 2001
Export Citation:
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Assignee:
TOKICO LTD
International Classes:
B60G17/015; F16F9/50; F16F15/02; (IPC1-7): F16F9/50; F16F15/02
Attorney, Agent or Firm:
Nobuo Kaida (3 outside)