JPS5544220A - Active filter - Google Patents
Active filterInfo
- Publication number
- JPS5544220A JPS5544220A JP11598778A JP11598778A JPS5544220A JP S5544220 A JPS5544220 A JP S5544220A JP 11598778 A JP11598778 A JP 11598778A JP 11598778 A JP11598778 A JP 11598778A JP S5544220 A JPS5544220 A JP S5544220A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- realized
- circuit
- active filter
- elements
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
Landscapes
- Networks Using Active Elements (AREA)
Abstract
PURPOSE:To obtain the active filter as the band rejection filter reducing the number of elements, by eliminating the buffer amplifiers. CONSTITUTION:The bridged T circuit is equivalent as the circuit B, and the active filter C can be realized without buffer amplifiers, by using R0 at the common connection of the capacitors C0, C0 as the resistor determining the amount of feedback. The transfer function T(s) of this circuit C is as shown in the equation. To constitute the band rejection filter, the resistors can be determined as 1/R1+1/R3= 1/R0, and R4/R2=2. Thus, the resistor R0 at the common connections of C0, C0 can be realized with R1 and R3. Thus, the filter which can reduce the number of elements can be realized and this can be used for graphic equalizer.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11598778A JPS5544220A (en) | 1978-09-22 | 1978-09-22 | Active filter |
US06/074,026 US4284965A (en) | 1978-09-11 | 1979-09-10 | Tone control device |
DE2936507A DE2936507C2 (en) | 1978-09-11 | 1979-09-10 | Graphic equalizer |
GB7931484A GB2035739B (en) | 1978-09-11 | 1979-09-11 | Tone control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11598778A JPS5544220A (en) | 1978-09-22 | 1978-09-22 | Active filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5544220A true JPS5544220A (en) | 1980-03-28 |
JPS6117369B2 JPS6117369B2 (en) | 1986-05-07 |
Family
ID=14676061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11598778A Granted JPS5544220A (en) | 1978-09-11 | 1978-09-22 | Active filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5544220A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58117147A (en) * | 1981-12-29 | 1983-07-12 | 東陶機器株式会社 | Water supply apparatus |
JPS58187014A (en) * | 1982-04-26 | 1983-11-01 | Nec Corp | Active filter circuit |
JPS6013132A (en) * | 1983-06-30 | 1985-01-23 | 東陶機器株式会社 | Toilet bowl washing apparatus |
JPS60253632A (en) * | 1984-05-29 | 1985-12-14 | 東陶機器株式会社 | Toilet bowl cleaning apparatus |
-
1978
- 1978-09-22 JP JP11598778A patent/JPS5544220A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58117147A (en) * | 1981-12-29 | 1983-07-12 | 東陶機器株式会社 | Water supply apparatus |
JPS58187014A (en) * | 1982-04-26 | 1983-11-01 | Nec Corp | Active filter circuit |
JPS6013132A (en) * | 1983-06-30 | 1985-01-23 | 東陶機器株式会社 | Toilet bowl washing apparatus |
JPH0222173B2 (en) * | 1983-06-30 | 1990-05-17 | Toto Ltd | |
JPS60253632A (en) * | 1984-05-29 | 1985-12-14 | 東陶機器株式会社 | Toilet bowl cleaning apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6117369B2 (en) | 1986-05-07 |
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