JPS5554449A - Voltage detector of variable input resistance type - Google Patents
Voltage detector of variable input resistance typeInfo
- Publication number
- JPS5554449A JPS5554449A JP8457778A JP8457778A JPS5554449A JP S5554449 A JPS5554449 A JP S5554449A JP 8457778 A JP8457778 A JP 8457778A JP 8457778 A JP8457778 A JP 8457778A JP S5554449 A JPS5554449 A JP S5554449A
- Authority
- JP
- Japan
- Prior art keywords
- input resistance
- resistance
- voltage detector
- sensitivity
- point
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To obtain a variable input resistance type voltage detector which can easily be manufactured and has accurate detection performance by realizing both high-sensitivity and low-sensitivity detection operations by changing an input resistance in value only by depressing a push button.
CONSTITUTION: Even if a finger comes in contact with electrode palte 4 with switches S1 and S2 unpushed, insulation from point E is maintained. At this time, since protective resistance R1 is smaller in value than current control resistor RG and S1 is OFF, voltage-dividing resistance R2 can be considered to be infinite, so that voltage detection sensitivity will be high. With push buttons S1 and S2 depressed, resistance R2 is interposed in parallel between G and E of voltage detection circuit 6 and point E is led to electrode plate 4 through switch S2. At this time, since metal push button 3 is fitted to the leaf spring of switch S2, two fingers where button 3 and electrode 4 are nipped serve as a conductor between point E and the earth and the input resistance lowers. In this way, the variable input resistance type voltage detector can be obtained which can easily be fabricated and has accurate detection performance.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8457778A JPS5554449A (en) | 1978-07-13 | 1978-07-13 | Voltage detector of variable input resistance type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8457778A JPS5554449A (en) | 1978-07-13 | 1978-07-13 | Voltage detector of variable input resistance type |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5554449A true JPS5554449A (en) | 1980-04-21 |
JPS62465B2 JPS62465B2 (en) | 1987-01-08 |
Family
ID=13834518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8457778A Granted JPS5554449A (en) | 1978-07-13 | 1978-07-13 | Voltage detector of variable input resistance type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5554449A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02135872U (en) * | 1989-04-17 | 1990-11-13 |
-
1978
- 1978-07-13 JP JP8457778A patent/JPS5554449A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02135872U (en) * | 1989-04-17 | 1990-11-13 |
Also Published As
Publication number | Publication date |
---|---|
JPS62465B2 (en) | 1987-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5554449A (en) | Voltage detector of variable input resistance type | |
JPS5310491A (en) | Oxygen concentration detector | |
JPS5438548A (en) | Earth device | |
SE302482B (en) | ||
JPS56108128A (en) | Keyboard device | |
JPS5355935A (en) | Sample holding circuit | |
JPS5481086A (en) | Semiconductor integrated circuit | |
JPS5494801A (en) | Selection circuit | |
JPS5732124A (en) | Pulse detecting circuit | |
JPS5425660A (en) | Peak value detection circuit | |
JPS5466057A (en) | Insulating amplifier circuit | |
JPS5224516A (en) | Key switch operation detection circuit | |
JPS52147081A (en) | Semiconductor switching circuit | |
JPS5442638A (en) | Circuit breaker | |
FR2389218A1 (en) | Stepping switch for electrical appts. - uses several pushbuttons contacting resistor or connection strip (SW 20.11.78) | |
JPS52103661A (en) | Overcurrent detector circuit | |
JPS5466035A (en) | Multiple-item input device | |
JPS5719673A (en) | Electric current detector with resistance change-over circuit | |
JPS53142279A (en) | Weight detector | |
JPS541677A (en) | Multipoint temperature measuring apparatus | |
JPS5517446A (en) | Humidity detector | |
JPS5474345A (en) | Variable resistance | |
JPS5625826A (en) | Nonlinear coding circuit device | |
JPS51136260A (en) | Load variation detection | |
JPS5688529A (en) | Key input control system |