JPS54101653A - Switching circuit of double integration analogue digital converter - Google Patents
Switching circuit of double integration analogue digital converterInfo
- Publication number
- JPS54101653A JPS54101653A JP874278A JP874278A JPS54101653A JP S54101653 A JPS54101653 A JP S54101653A JP 874278 A JP874278 A JP 874278A JP 874278 A JP874278 A JP 874278A JP S54101653 A JPS54101653 A JP S54101653A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- signals
- resistance
- switching circuit
- diode
- 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
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To perform an accurate proportional conversion by constituting a circuit by a switching diode and transistors which are connected to the positive polarity and the negative polarity of the diode respectively and are opened at a charge time and are closed at a discharge time.
CONSTITUTION: This circuit is constituted by power source terminal 11 which gives the threshold voltage prescribed by resistances 12 and 13, signal voltage terminal 14, reference voltage terminal 15, terminal 16 where T1.T2 signals are applied, transistors Tr17 and 18 which are connected to the positive polarity and the negative polarity of diode 19 respectively and have the function to switch the input of operational amplifier 20 to terminal 14 and terminal 15, and comparator 25. When T1.T2 signals are applied to terminal 16, Tr17 and 18 are in a cut-off state at a T1 time, and the signal at terminal 14 is applied to resistance 21, and the level at output end (a) of amplifier 20 starts reduction. After T1 passage, when signals by which Tr17 and 18 becomes an ON-state are applied, resistance 21 is separated from terminal 14, and resistance 21 is connected to terminal 15 by Tr18.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP874278A JPS54101653A (en) | 1978-01-27 | 1978-01-27 | Switching circuit of double integration analogue digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP874278A JPS54101653A (en) | 1978-01-27 | 1978-01-27 | Switching circuit of double integration analogue digital converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54101653A true JPS54101653A (en) | 1979-08-10 |
Family
ID=11701387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP874278A Pending JPS54101653A (en) | 1978-01-27 | 1978-01-27 | Switching circuit of double integration analogue digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54101653A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4916369A (en) * | 1972-05-19 | 1974-02-13 |
-
1978
- 1978-01-27 JP JP874278A patent/JPS54101653A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4916369A (en) * | 1972-05-19 | 1974-02-13 |
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