JPS54110898A - Humidity detecting circuit - Google Patents
Humidity detecting circuitInfo
- Publication number
- JPS54110898A JPS54110898A JP1793478A JP1793478A JPS54110898A JP S54110898 A JPS54110898 A JP S54110898A JP 1793478 A JP1793478 A JP 1793478A JP 1793478 A JP1793478 A JP 1793478A JP S54110898 A JPS54110898 A JP S54110898A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- humidity sensor
- terminals
- resistances
- power source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
PURPOSE: To make supply voltage uninfluential on humidity detection despite the use of the same power source for the entire circuit by applying voltages intermittently to a humidity sensor thereby reducing the characteristic fluctuations of the humidity sensor and making the relative relations of the split voltages by the humidity sensor and set voltage value constant.
CONSTITUTION: The series connection assembly of a resistance 3 and a humidity sensor 4 and the series connection assembly of resistances 5, 6, 7 are parallel inserted between power source terminals 1, 2. A voltage comparator 8 compares the voltage V1 at the point of connection of the resistance 3 and humidity sensor 4 and the voltage V2 at the point of connection of the resistances 5, 6. A voltage comparator 9 compares the foregoing voltage V1 and the voltage V3 at the point of connection of the resistances 6, 7. A memory circuit 10 when applied with a control signal at its ENABLE terminal 11 stores the results of comparison of the voltage comparators 8, 9 and generates its output in terminals 12, 13, then the voltage comparators 8, 9 and memory circuit 10 are supplied with power from the power source terminal 1. The control signal is then applied to the terminals 2, 11 and voltages are intermittently applied between the terminals 1, 2, during the application period whereof the humidities are detected.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1793478A JPS54110898A (en) | 1978-02-17 | 1978-02-17 | Humidity detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1793478A JPS54110898A (en) | 1978-02-17 | 1978-02-17 | Humidity detecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54110898A true JPS54110898A (en) | 1979-08-30 |
Family
ID=11957594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1793478A Pending JPS54110898A (en) | 1978-02-17 | 1978-02-17 | Humidity detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54110898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61159145A (en) * | 1984-08-31 | 1986-07-18 | Marcon Electronics Co Ltd | Humidity sensor circuit |
| JPS6334613A (en) * | 1986-07-29 | 1988-02-15 | Matsushita Seiko Co Ltd | Humidity detecting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534992B2 (en) * | 1974-09-06 | 1978-02-22 |
-
1978
- 1978-02-17 JP JP1793478A patent/JPS54110898A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534992B2 (en) * | 1974-09-06 | 1978-02-22 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61159145A (en) * | 1984-08-31 | 1986-07-18 | Marcon Electronics Co Ltd | Humidity sensor circuit |
| JPH0362224B2 (en) * | 1984-08-31 | 1991-09-25 | Marukon Denshi Kk | |
| JPS6334613A (en) * | 1986-07-29 | 1988-02-15 | Matsushita Seiko Co Ltd | Humidity detecting device |
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