Title:
煙感知器
Document Type and Number:
Japanese Patent JP4766605
Kind Code:
B2
Abstract:
To provide a smoke detector for decreasing a power supply voltage for operating an LED for detection, and for operating an amplifier circuit with much higher precision.
This smoke detector for controlling a light emitting element for smoke detection is provided with a reference potential generation circuit for generating a predetermined reference potential; a buffer circuit for reducing the output impedance of the reference potential generation circuit and a constant current supply circuit for supplying constant currents corresponding to a potential to be output by the buffer circuit to the light emitting element.
COPYRIGHT: (C)2007,JPO&INPIT
Inventors:
Hideki Morita
Masuyama Makoto
Masuyama Makoto
Application Number:
JP2006043271A
Publication Date:
September 07, 2011
Filing Date:
February 21, 2006
Export Citation:
Assignee:
Nomi Disaster Prevention Co., Ltd.
International Classes:
G08B17/107
Domestic Patent References:
| JP2002358582A | ||||
| JP8272468A |
Attorney, Agent or Firm:
Shinichi Kawakubo