JPS5669558A - Air flow switch with wind prevention hood - Google Patents
Air flow switch with wind prevention hoodInfo
- Publication number
- JPS5669558A JPS5669558A JP14496079A JP14496079A JPS5669558A JP S5669558 A JPS5669558 A JP S5669558A JP 14496079 A JP14496079 A JP 14496079A JP 14496079 A JP14496079 A JP 14496079A JP S5669558 A JPS5669558 A JP S5669558A
- Authority
- JP
- Japan
- Prior art keywords
- thermistor
- wind
- thermistors
- air flow
- flow switch
- 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
Abstract
PURPOSE: To detect the presence of wind by a simple circuit by connecting two thick film thermistors in series or in parallel, flowing electric current to generqte heat by itself and providing a wind preventing hood on one thermistor.
CONSTITUTION: The thick film thermisters Th3, Th4 of the same quality are connected in series and when voltage is applied to the terminals E, O, the thermistors Th3, Th4 are brought into a self heat condition. Then, a wind preventing hood is attached to one thermistor Th3 and wind is fed to both thermistors, the resistance value of the thermistor Th4 is larger than the resistance value of the thermistor Th3, thereby the potential of a wiring part is rasied. When it exceeds zener diode voltage of the zener diode D1, the transistors Tr1, Tr2 are turned on and the detecting signal from the teminal C is output.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14496079A JPS5669558A (en) | 1979-11-10 | 1979-11-10 | Air flow switch with wind prevention hood |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14496079A JPS5669558A (en) | 1979-11-10 | 1979-11-10 | Air flow switch with wind prevention hood |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5669558A true JPS5669558A (en) | 1981-06-10 |
Family
ID=15374190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14496079A Pending JPS5669558A (en) | 1979-11-10 | 1979-11-10 | Air flow switch with wind prevention hood |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5669558A (en) |
-
1979
- 1979-11-10 JP JP14496079A patent/JPS5669558A/en active Pending
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