JPH0221552U - - Google Patents
Info
- Publication number
- JPH0221552U JPH0221552U JP10005788U JP10005788U JPH0221552U JP H0221552 U JPH0221552 U JP H0221552U JP 10005788 U JP10005788 U JP 10005788U JP 10005788 U JP10005788 U JP 10005788U JP H0221552 U JPH0221552 U JP H0221552U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- sensing element
- humidity
- capacitor
- series
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
第１図は湿度検知回路を示す回路構成図、第２
図及び第３図は本考案それぞれの実施例に係る湿
度検知回路を示す回路構成図、第４図及び第５図
はパルス発振回路から出力されるそれぞれのパル
ス電圧波形図、第６図及び第７図は、本考案にお
いて感湿素子に印加されるそれぞれのパルス電圧
波形図、第８図及び第９図は従来例において感湿
素子に印加されるそれぞれのパルス電圧波形図で
ある。
１……パルス発振回路、２……コンデンサ、３
……感湿素子、４……抵抗、５……接続点、６…
…整流回路、７……サーミスタ、８……補正抵抗
。
Figure 1 is a circuit configuration diagram showing the humidity detection circuit, Figure 2 is a circuit diagram showing the humidity detection circuit.
3 and 3 are circuit configuration diagrams showing humidity detection circuits according to respective embodiments of the present invention, FIGS. 4 and 5 are respective pulse voltage waveform diagrams output from the pulse oscillation circuit, and FIGS. FIG. 7 is a waveform diagram of each pulse voltage applied to the humidity sensing element in the present invention, and FIGS. 8 and 9 are diagrams of each pulse voltage waveform applied to the humidity sensing element in the conventional example. 1...Pulse oscillation circuit, 2...Capacitor, 3
...Moisture sensing element, 4...Resistor, 5...Connection point, 6...
... Rectifier circuit, 7 ... Thermistor, 8 ... Correction resistor.
Claims (1)
出力端に接続したコンデンサと、このコンデンサ
の他端に直列に接続した感湿素子及び抵抗と、こ
の感湿素子と抵抗の接続点に接続した整流回路と
からなる湿度検知回路において、前記コンデンサ
の容量Ｃを Ｃ＝−ｔ１（Ｒ１＋ＲＨ）・ｌｎ０．１ （ただし、Ｒ１；感湿素子と直列に接続した抵
抗の抵抗値、ＲＨ；感湿素子の抵抗値、ｔ１；パ
ルスの半サイクル時間） の範囲としたことを特徴とする湿度検知回路。 (2) 請求項(1)記載の湿度検知回路において、接
続点を基点に抵抗を接続した側にこの抵抗と直列
にサーミスタを接続したことを特徴とする湿度検
知回路。[Claims for Utility Model Registration] (1) A pulse oscillation circuit, a capacitor connected to the output end of this pulse oscillation circuit, a moisture sensing element and a resistor connected in series to the other end of this capacitor, and this humidity sensing element In a humidity detection circuit consisting of a rectifier circuit connected to a connection point of a resistor, the capacitance C of the capacitor is C=-t 1 (R 1 +RH)・ln0.1 (where R 1 is connected in series with the humidity sensing element). A humidity detection circuit characterized in that the resistance value of a connected resistor, RH; the resistance value of a humidity sensing element; t1 ; the half cycle time of a pulse). (2) The humidity detection circuit according to claim (1), characterized in that a thermistor is connected in series with the resistor on the side to which the resistor is connected starting from the connection point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10005788U JPH0221552U (en) | 1988-07-27 | 1988-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10005788U JPH0221552U (en) | 1988-07-27 | 1988-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0221552U true JPH0221552U (en) | 1990-02-13 |
Family
ID=31327788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10005788U Pending JPH0221552U (en) | 1988-07-27 | 1988-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221552U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046454A (en) * | 1983-08-24 | 1985-03-13 | Marcon Electronics Co Ltd | Humidity detecting circuit |
| JPS6091249A (en) * | 1983-10-26 | 1985-05-22 | Hitachi Ltd | Humidity detecting circuit for air conditioner |
| JPS62274251A (en) * | 1986-05-23 | 1987-11-28 | Nippon Cement Co Ltd | Humidity detecting circuit |
-
1988
- 1988-07-27 JP JP10005788U patent/JPH0221552U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046454A (en) * | 1983-08-24 | 1985-03-13 | Marcon Electronics Co Ltd | Humidity detecting circuit |
| JPS6091249A (en) * | 1983-10-26 | 1985-05-22 | Hitachi Ltd | Humidity detecting circuit for air conditioner |
| JPS62274251A (en) * | 1986-05-23 | 1987-11-28 | Nippon Cement Co Ltd | Humidity detecting circuit |
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