JPS6448509A - Time constant circuit - Google Patents
Time constant circuitInfo
- Publication number
- JPS6448509A JPS6448509A JP20401387A JP20401387A JPS6448509A JP S6448509 A JPS6448509 A JP S6448509A JP 20401387 A JP20401387 A JP 20401387A JP 20401387 A JP20401387 A JP 20401387A JP S6448509 A JPS6448509 A JP S6448509A
- Authority
- JP
- Japan
- Prior art keywords
- current
- resistive element
- time constant
- current flowing
- source circuit
- 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
- Networks Using Active Elements (AREA)
Abstract
PURPOSE:To increase the time constant by detecting a current flowing to a resistive element being a component of a time constant circuit so as to detect a current flowing to the resistive element and providing a current source circuit forming a current smaller in terms of absolute than the current flowing to the resistive element thereby giving a current being difference between the current flowing to the resistive element and the output current of the current source circuit. CONSTITUTION:The current source circuit detecting a current flowing to a resistive element R2 being a component of a time constant circuit to generate a current smaller in terms of absolute value than the current flowing to the resistive element R2 is provided and a current being a difference between the current flowing to the resistive element R2 and the output current of the current source circuit is given to a capacitor (c). That is, since the charge/discharge current of the capacitor (c) is smaller, the capacitance of the capacitor (c) viewed from the input signal is increased. Thus, the time constant is increased equivalently.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204013A JP2515814B2 (en) | 1987-08-19 | 1987-08-19 | Time constant circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204013A JP2515814B2 (en) | 1987-08-19 | 1987-08-19 | Time constant circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6448509A true JPS6448509A (en) | 1989-02-23 |
JP2515814B2 JP2515814B2 (en) | 1996-07-10 |
Family
ID=16483326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62204013A Expired - Fee Related JP2515814B2 (en) | 1987-08-19 | 1987-08-19 | Time constant circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2515814B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022821A (en) * | 1983-07-19 | 1985-02-05 | Sony Corp | Feedback type integration circuit |
-
1987
- 1987-08-19 JP JP62204013A patent/JP2515814B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022821A (en) * | 1983-07-19 | 1985-02-05 | Sony Corp | Feedback type integration circuit |
Also Published As
Publication number | Publication date |
---|---|
JP2515814B2 (en) | 1996-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |