Title:
【発明の名称】電子駆動制御部
Document Type and Number:
Japanese Patent JP2003505853
Kind Code:
A
Abstract:
An electronic drive control apparatus for controlling a drive coil of a contactor includes a microcontroller configured for generating an inverted pulse width modulated signal, and at least one semiconductor switch. A pulse-shaping stage is connected downstream of the microcontroller for varying the pulse width modulated signal. The pulse-shaping stage includes a preselectable RC combination and an inverter connected downstream of the RC combination and having a Schmitt trigger input. A preselection of the RC combination is carried out via a plurality of outputs of the microcontroller to open collector transistor stages of discharge resistors of the RC combination. The pulse width of the driving signal of the semiconductor switch is determined from the inverted pulse width modulated signal and the preselected RC combination.
Inventors:
Might Wolfgang
Melcht Wilhelm
Melcht Wilhelm
Application Number:
JP2001512706A
Publication Date:
February 12, 2003
Filing Date:
July 15, 2000
Export Citation:
Assignee:
Mellar Gezershyaft Mitt Besilyen Ktel Haftung
International Classes:
G05F1/56; H01H47/32; H03K7/08; H01H47/00; (IPC1-7): H01H47/32; G05F1/56; H03K7/08
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)