Having Resetting Device Patents (Class 340/815.59)
  • Circuit for the controlled return of a pointer driven by a stepping motor in the event of failure of the supply voltage
    Patent number: 6707388
    Abstract: A circuit arrangement for the controlled return of a pointer driven by a stepping motor in the event of failure of the supply voltage includes a control circuit for actuating the stepping motor. The supply voltage at least for the control circuit for the stepping motor is buffered with at least one buffer capacitor, the capacitance of the at least one buffer capacitor being such that the buffer capacitor supplies the control circuit for the stepping motor with electrical power at least until the control circuit has moved the pointer driven by the stepping motor to a default position. The default position is a zero position in relation to the scale on the display apparatus or to another indicated value which is noncritical in relation to the scaling on the display apparatus.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: March 16, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jürgen Adams
  • Circuit for the controlled return of a pointer driven by a stepping motor in the event of failure of the supply voltage
    Publication number: 20030140842
    Abstract: A circuit arrangement for the controlled return of a pointer driven by a stepping motor in the event of failure of the supply voltage includes a control circuit for actuating the stepping motor. The supply voltage at least for the control circuit for the stepping motor is buffered with at least one buffer capacitor, the capacitance of the at least one buffer capacitor being such that the buffer capacitor supplies the control circuit for the stepping motor with electrical power at least until the control circuit has moved the pointer driven by the stepping motor to a default position. The default position is a zero position in relation to the scale on the display apparatus or to another indicated value which is noncritical in relation to the scaling on the display apparatus.
    Type: Application
    Filed: January 30, 2003
    Publication date: July 31, 2003
    Applicant: Siemens Aktiengesellschaft
    Inventor: Jurgen Adams