JPS54131752A - Touch switch circuit - Google Patents
Touch switch circuitInfo
- Publication number
- JPS54131752A JPS54131752A JP3990578A JP3990578A JPS54131752A JP S54131752 A JPS54131752 A JP S54131752A JP 3990578 A JP3990578 A JP 3990578A JP 3990578 A JP3990578 A JP 3990578A JP S54131752 A JPS54131752 A JP S54131752A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- output
- resistor
- diode
- input terminal
- 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.)
- Granted
Links
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE: To provide the subject circuit wherein the leak limitation is relaxed by the circuit structure of diode, means for interrupting the power source of the touch portion by being added to the circuit structure, and further means for setting the signal bypass for controlling the output even when the power source of the touch portion has been interrupted.
CONSTITUTION: In a state where no signal is supplied to an input terminal RM, one's body or the like is not in contact therewith, and no resistor RT is present, transistors Q1 through Q4, and Q6 become nonconductive, but transistor Q5 becomes conductive, and no output appears on an output terminal Y. When the resistor RT is connected and the transistor Q2 becomes conductive, transistors Q3 and Q4 become conductive and an output appears on the output terminal Y. When a signal of making the transistor Q1 conductive is supplied to the input terminal RM in a state where no resistor RT is present, an output appears on the input terminal Y. The diode D1 bypasses the leak current of the transistor Q1 to suppress the leak current of the transistor Q2. The diode D2 prevents the transistor Q2 from being driven by the leak current.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3990578A JPS54131752A (en) | 1978-04-04 | 1978-04-04 | Touch switch circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3990578A JPS54131752A (en) | 1978-04-04 | 1978-04-04 | Touch switch circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54131752A true JPS54131752A (en) | 1979-10-13 |
JPH0160972B2 JPH0160972B2 (en) | 1989-12-26 |
Family
ID=12565965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3990578A Granted JPS54131752A (en) | 1978-04-04 | 1978-04-04 | Touch switch circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54131752A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102468068A (en) * | 2010-11-04 | 2012-05-23 | 浙江万盛电气有限公司 | Light touch electronic power switch circuit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0618191U (en) * | 1992-08-21 | 1994-03-08 | 石川島播磨重工業株式会社 | Swivel window |
-
1978
- 1978-04-04 JP JP3990578A patent/JPS54131752A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102468068A (en) * | 2010-11-04 | 2012-05-23 | 浙江万盛电气有限公司 | Light touch electronic power switch circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0160972B2 (en) | 1989-12-26 |
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