JPS5523562A - Analogue input circuit - Google Patents
Analogue input circuitInfo
- Publication number
- JPS5523562A JPS5523562A JP9612878A JP9612878A JPS5523562A JP S5523562 A JPS5523562 A JP S5523562A JP 9612878 A JP9612878 A JP 9612878A JP 9612878 A JP9612878 A JP 9612878A JP S5523562 A JPS5523562 A JP S5523562A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- input circuit
- input
- circuits
- analogue 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
- Networks Using Active Elements (AREA)
Abstract
PURPOSE:To prevent interference to other circuits at an input circuit insertion time by inserting a variable resistance in series to a capacitor in a constitution where plural input circuits are connected in parallel to the same signal line and the input part has the capacitor. CONSTITUTION:Under a state where another analogue input circuit is connected to analogue input signal e, an analogue input circuit having capacitor 3 is connected. At this time, photo-insulating FET switch 6-1 is turned off to charge the capacitor through high resistance 5-1. After charging, a timing generation circuit turns on FET switch 6-1 to make it low-input impedance. Since capacitor 3 is charged through the high resistance, no interference is given to other circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9612878A JPS5523562A (en) | 1978-08-09 | 1978-08-09 | Analogue input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9612878A JPS5523562A (en) | 1978-08-09 | 1978-08-09 | Analogue input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5523562A true JPS5523562A (en) | 1980-02-20 |
Family
ID=14156738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9612878A Pending JPS5523562A (en) | 1978-08-09 | 1978-08-09 | Analogue input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5523562A (en) |
-
1978
- 1978-08-09 JP JP9612878A patent/JPS5523562A/en active Pending
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