JPS6417512A - Signal range switching circuit - Google Patents
Signal range switching circuitInfo
- Publication number
- JPS6417512A JPS6417512A JP17278287A JP17278287A JPS6417512A JP S6417512 A JPS6417512 A JP S6417512A JP 17278287 A JP17278287 A JP 17278287A JP 17278287 A JP17278287 A JP 17278287A JP S6417512 A JPS6417512 A JP S6417512A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- dividing ratio
- voltage dividing
- range
- input
- 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
- Electronic Switches (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE:To highly accurately switch a signal range by inserting a voltage restricting circuit between an input terminal of a voltage dividing circuit and an analog switch. CONSTITUTION:The voltage restricting circuit consists of constant current elements 11, 12, rectifying diodes 13, 14 and voltage restricting DC voltage sources +V, -V. When analog switches 15, 16 are respectively turned on and off, an input voltage can be accurately transmitted to an output at the voltage dividing ratio of 1 through an amplifier 19 if the input voltage is included within the normal operation range of the analog switches. When the input voltage exceeds the operation range and goes to a high voltage, the switches 15, 16 are respectively turned off and on and a voltage attenuated at a voltage dividing ratio determined by the resistance values of resistors RA, RB is outputted to the output. When the voltage dividing ratio of the resistors RA, RB is set up to a high value, the range of the signal voltage with amplitude expanded by the magnification corresponding to the increment of the voltage dividing ratio can be highly accurately switched.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17278287A JPS6417512A (en) | 1987-07-13 | 1987-07-13 | Signal range switching circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17278287A JPS6417512A (en) | 1987-07-13 | 1987-07-13 | Signal range switching circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6417512A true JPS6417512A (en) | 1989-01-20 |
Family
ID=15948248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17278287A Pending JPS6417512A (en) | 1987-07-13 | 1987-07-13 | Signal range switching circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6417512A (en) |
-
1987
- 1987-07-13 JP JP17278287A patent/JPS6417512A/en active Pending
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