Title:
REMOTE OPERATING CIRCUIT
Document Type and Number:
Japanese Patent JPS5947606
Kind Code:
A
Abstract:
PURPOSE:To decrease the number of signal lines used between an operation board and a control board, by addig a pulse width modulation circuit to the control board. CONSTITUTION:The pluse side fixed terminal of a variable resistor 2 provided to a console panel 1 is connected to an input terminal 11 of a speedometer 3. Whie an output terminal 12 of a control panel 5 which delivers the positive voltage proportional to the revolving speed of a motor is connected to the terminal 11 of the panel 1 via a pulse width modulation circuit 23 consisting of a sawtooth wave oscillator 21 and a comparator 22. Furthermore a variable output terminal 7 of the resistor 2 is connected to an input terminal of a sample holding amplifier 25 which is controlled by the output of the comparator 22 via a delay circuit 24. Then the output terminal of the amplifier 25 is connected to an input terminal 8 for speed set voltage of the panel 5. In such a constitution, the number of signals lines can be decreased between the panels 1 and 5.
Inventors:
MORITA MAKOTO
Application Number:
JP15933882A
Publication Date:
March 17, 1984
Filing Date:
September 13, 1982
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G05B21/02; G05B11/00; G05B11/01; H02J13/00; (IPC1-7): G05B21/02
Attorney, Agent or Firm:
Takehiko Suzue