JPS5551344A - Humidity detector - Google Patents
Humidity detectorInfo
- Publication number
- JPS5551344A JPS5551344A JP12482378A JP12482378A JPS5551344A JP S5551344 A JPS5551344 A JP S5551344A JP 12482378 A JP12482378 A JP 12482378A JP 12482378 A JP12482378 A JP 12482378A JP S5551344 A JPS5551344 A JP S5551344A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- humidity
- circuit
- signal
- resistor
- 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 obtain the signal which varies linearly in accordance with the humidity change with a simple constitution by connecting the necessary resistance in parallel to the velocity sensor and then connecting the general impedance characteristics formed linear substantially between the input and output terminals of the amplifier in the form of the feedback circuit.
CONSTITUTION: Resistor 4 featuring nearly the linear general impedance to the variation of the humidity is connected in parallel to semiconductor humidity sensor 6. Using the parallel circuit of sensor 6 and resistor 4 as the feedback resistance, the reverse amplifier circuit is formed by resistors 2 and 3 plus operational amplifier 5. The amplification factor of the reverse amplifier is determined by the ratio of resistor 2 and the general impedance of the feedback resistance, and the AC output signal amplified up to the determined amplification factor is delivered to the output terminal of amplifier 5 since the AC signal is supplied to the reverse circuit. As a result, the humidity signal which varies in a nearly linear way according to the humidity change can be obtained even with a simple constitution.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12482378A JPS5551344A (en) | 1978-10-11 | 1978-10-11 | Humidity detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12482378A JPS5551344A (en) | 1978-10-11 | 1978-10-11 | Humidity detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5551344A true JPS5551344A (en) | 1980-04-15 |
Family
ID=14894980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12482378A Pending JPS5551344A (en) | 1978-10-11 | 1978-10-11 | Humidity detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5551344A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61145443A (en) * | 1984-12-19 | 1986-07-03 | Marcon Electronics Co Ltd | Humidity sensor circuit |
JPS61210934A (en) * | 1985-03-15 | 1986-09-19 | Marcon Electronics Co Ltd | Humidity measuring circuit |
JPS61258457A (en) * | 1985-05-13 | 1986-11-15 | Nec Corp | Resin sealed type semiconductor device |
JPS62130595A (en) * | 1985-12-02 | 1987-06-12 | 株式会社東芝 | Manufacture of electric circuit device |
JPS62106154U (en) * | 1985-12-13 | 1987-07-07 | ||
JPH01112739A (en) * | 1987-10-27 | 1989-05-01 | Matsushita Electric Works Ltd | Printed circuit board for mounting electronic component |
-
1978
- 1978-10-11 JP JP12482378A patent/JPS5551344A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61145443A (en) * | 1984-12-19 | 1986-07-03 | Marcon Electronics Co Ltd | Humidity sensor circuit |
JPS61210934A (en) * | 1985-03-15 | 1986-09-19 | Marcon Electronics Co Ltd | Humidity measuring circuit |
JPS61258457A (en) * | 1985-05-13 | 1986-11-15 | Nec Corp | Resin sealed type semiconductor device |
JPH047107B2 (en) * | 1985-05-13 | 1992-02-07 | Nippon Electric Co | |
JPS62130595A (en) * | 1985-12-02 | 1987-06-12 | 株式会社東芝 | Manufacture of electric circuit device |
JPS62106154U (en) * | 1985-12-13 | 1987-07-07 | ||
JPH05853Y2 (en) * | 1985-12-13 | 1993-01-11 | ||
JPH01112739A (en) * | 1987-10-27 | 1989-05-01 | Matsushita Electric Works Ltd | Printed circuit board for mounting electronic component |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57138208A (en) | Power detecting circuit and gain control circuit using it | |
JPS56137598A (en) | Sample hold circuit | |
JPS5551361A (en) | Range switching device for electric measuring instrument | |
ATE42635T1 (en) | FLOWMETER WITH A TEMPERATURE SENSITIVE RESISTANCE ELEMENT. | |
JPS5551344A (en) | Humidity detector | |
JPS55136708A (en) | Voltage current conversion circuit | |
JPS54147761A (en) | Gain control unit | |
JPS5728407A (en) | Amplifying circuit | |
JPS56168427A (en) | Analog-to-digital converter | |
JPS5583352A (en) | Noise reduction unit on signal compression and expansion system | |
JPS56110312A (en) | Diferential amplifier | |
JPS5739424A (en) | Reference voltage source | |
JPS5651618A (en) | Hot-wire flow sensor circuit | |
JPS57212810A (en) | Amplifying circuit | |
JPS5753129A (en) | Active filter | |
JPS5459858A (en) | Analog arithmetic unit | |
JPS5567660A (en) | Power maker circuit | |
JPS5443448A (en) | Compressor | |
JPS57159304A (en) | Driving circuit for actuator | |
JPS5776904A (en) | Amplifying circuit | |
JPS5791013A (en) | Linearizer | |
JPS5738009A (en) | Amplifying circuit | |
JPS5797227A (en) | Electronic switching amplifying circuit | |
WILEY et al. | Logarithmic circuit with wide dynamic range[Patent] | |
JPS55154664A (en) | Analog square circuit |