Title:
【発明の名称】純水装置用電子式制御器
Document Type and Number:
Japanese Patent JPH02503830
Kind Code:
A
Abstract:
An analog ASIC (Application Specific Integrated Circuit) circuit has a power control section, a conductivity filter testing section, a light emitting diode (LED) driving section, and a bias section. The LED driving section is responsive to the conductivity filter testing section for indicating when the filter should be replaced. The power control section, conductivity filter testing section, LED driving section, and bias section are all operated in a controlled timed relation by a digital ASIC logic system to minimize power use.
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Inventors:
Brown, Barry M
Edwards, Evan Aye
Fairy side, william tee
West, Henry El
Edwards, Evan Aye
Fairy side, william tee
West, Henry El
Application Number:
JP50401689A
Publication Date:
November 08, 1990
Filing Date:
March 23, 1989
Export Citation:
Assignee:
Eastman Kodak Company
International Classes:
G01N27/00; B01D61/12; B01D65/10; C02F1/44; G05D21/02; (IPC1-7): B01D61/12; C02F1/44; G01N27/00; G05D21/02
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)