Title:
TERMINAL DEVICE
Document Type and Number:
Japanese Patent JPS5844566
Kind Code:
A
Abstract:
PURPOSE:To avoid the occurrence of a danger such as a fire caused by the heating of a coil, etc., by discontinuing the conduction to the coil of an electromagnet which drives a drawer when the drawer is opened. CONSTITUTION:A microswitch 21 is turned on when a drawer 6 has a shift of a prescribed distance. When the switch 21 is off, the potential of power supply +Vc is applied to the other input terminal of a gate circuit 22 at a control part 1. As a result, the output of an instruction latching circuit 4 is fed to a driver 5 via the gate 22 to activate the driver 5. Thus a coil 7 conducts to drive and open the drawer 6. When the drawer 6 is shifted by a prescribed distance, the switch 21 is turned on. Thus the earth potential is applied to the other terminal of the circuit 22 to turn off the circuit 22. Then the driver 5 becomes inactive to discontinue the conduction to the coil 7. In such way, the safety is enhanced.
Inventors:
KOYANAGI TOMOO
Application Number:
JP14291681A
Publication Date:
March 15, 1983
Filing Date:
September 10, 1981
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G07G1/12; G07G1/00; G07G3/00; (IPC1-7): G06F15/21
Attorney, Agent or Firm:
Koshiro Matsuoka