JPS55125709A - Tone control circuit - Google Patents
Tone control circuitInfo
- Publication number
- JPS55125709A JPS55125709A JP3296979A JP3296979A JPS55125709A JP S55125709 A JPS55125709 A JP S55125709A JP 3296979 A JP3296979 A JP 3296979A JP 3296979 A JP3296979 A JP 3296979A JP S55125709 A JPS55125709 A JP S55125709A
- Authority
- JP
- Japan
- Prior art keywords
- resistors
- amplifier
- divided
- voltage
- fed
- 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
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/04—Manually-operated control in untuned amplifiers
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
PURPOSE:To obtain the sound quality of excellence with the amplification of DC voltage, by connecting the input and output of the noninverting amplifier through the impedance circuit network and combining it with the control circuit without phase inversion at the gain 0 at flat frequency characteristics. CONSTITUTION:The output voltage of the non-inverting amplifier 25 is divided at the resistors 26 and 27, and this divided voltage is fed to the inverting input of the amplifier 25. The output voltage of the amplifier 25 is divided with the resistors 28 and 29, and this divided voltage is fed to the tone control circuit 30 without phase inversion at gain 0 db when the frequency characteristics are flat. The output voltage of the circuit 30 is fed to the junction of the resistors 26 and 27 via the capacitor 31, and the values of the resistors 28, 29 are selected beta times (positive real number) as large as the values of the resistors 26, 27 respectively. When the resistance values from the sliders of the low and high region tone control variable resistors 46, 47 of the circuit 30 to the resistors 38, 39 and capacitors 44, 45 are respectively r1-r4, the characters are as follows: Amplification from DC to ultra- high band with r1=r2, and r3=r4, low band cut with r1>r2, low band boost with r2>r1, high band cut with r3>r4 and high band boost with r4>r3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3296979A JPS55125709A (en) | 1979-03-20 | 1979-03-20 | Tone control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3296979A JPS55125709A (en) | 1979-03-20 | 1979-03-20 | Tone control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55125709A true JPS55125709A (en) | 1980-09-27 |
| JPS625364B2 JPS625364B2 (en) | 1987-02-04 |
Family
ID=12373725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3296979A Granted JPS55125709A (en) | 1979-03-20 | 1979-03-20 | Tone control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55125709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016037681A (en) * | 2014-08-08 | 2016-03-22 | 王子ホールディングス株式会社 | Device for papermaking from base material for fiber reinforced plastic compact and method for papermaking from base material for fiber reinforced plastic compact |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01186020A (en) * | 1988-01-20 | 1989-07-25 | Sanyo Electric Co Ltd | Many bit errors correction system |
-
1979
- 1979-03-20 JP JP3296979A patent/JPS55125709A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016037681A (en) * | 2014-08-08 | 2016-03-22 | 王子ホールディングス株式会社 | Device for papermaking from base material for fiber reinforced plastic compact and method for papermaking from base material for fiber reinforced plastic compact |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS625364B2 (en) | 1987-02-04 |
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