Title:
OPERATING TIME TRANSDUCER FOR POWER SWITCHING DEVICE
Document Type and Number:
Japanese Patent JP3197570
Kind Code:
B2
Abstract:
PURPOSE: To provide a compact operating time transducer of a power switching device with high reliability in which an operating time measuring system can be connected directly to a general purpose analog measuring system, data programming process can be handled equivalently to other general sensor, and check and maintenance can be facilitated.
CONSTITUTION: An analog signal corresponding to a time from a varying point of a start signal corresponding to an operation command of a power switching device to be input via an insulation discriminator 10a to a varying time of a stop signal corresponding to a completion of an operation of the device to be input via an insulation discriminator 10b is latched by a timer circuit 13. An output of the timer circuit 13 is amplified, fed toward an exterior as an analog signal to be handled equivalently to other general sensor.
More Like This:
Inventors:
Koichi Hashimoto
Masao Shibairi
Takashi Iida
Masao Shibairi
Takashi Iida
Application Number:
JP4370091A
Publication Date:
August 13, 2001
Filing Date:
March 08, 1991
Export Citation:
Assignee:
Nagano Keiki Co., Ltd.
Toshiba Corporation
Toshiba Corporation
International Classes:
G04F10/00; G04F10/04; G05B15/02; G05B19/05; (IPC1-7): G04F10/04
Domestic Patent References:
| JP5551392A | ||||
| JP6225283A | ||||
| JP370395U |
Attorney, Agent or Firm:
Hidekazu Miyoshi (3 outside)