JPS575410A - Equalizer amplifier - Google Patents
Equalizer amplifierInfo
- Publication number
- JPS575410A JPS575410A JP7968480A JP7968480A JPS575410A JP S575410 A JPS575410 A JP S575410A JP 7968480 A JP7968480 A JP 7968480A JP 7968480 A JP7968480 A JP 7968480A JP S575410 A JPS575410 A JP S575410A
- Authority
- JP
- Japan
- Prior art keywords
- input signal
- trs
- subjected
- same
- voltage change
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/025—Equalizers; Volume or gain control in limited frequency bands
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE:To make high and accurate the response of a negative feedback loop, by changing the power supply voltage of an equalizing circuit the same as an input signal. CONSTITUTION:An input signal applied to a terminal 1 is given to a noninverting input terminal of an operational amplifier A1 and to a gate of an FETTR1. Thus, the source output of the TR1 is subjected to the same voltage change as the input signal and the base input voltage to TRs 3, 4 makes the same voltage change as the input signal. Thus, the same voltage change as the input signal voltage is made to the emitter of the TRs 3, 4, the emitter output is shifted for the level by Zener diodes D1, D2 and applied to the base of TRs 2, 5. Since the TRs 2, 5 is operated at the operating region where the emitter output is subjected to the same voltage change as the base input, the emitter of the TRs 2, 5 is subjected to the same voltage change as the input signal voltage to the terminal 1, allowing the power supply voltages + or -B1 of the operational amplifier A1 to be subjected to the same waveform change in synchronizing with the input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7968480A JPS575410A (en) | 1980-06-13 | 1980-06-13 | Equalizer amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7968480A JPS575410A (en) | 1980-06-13 | 1980-06-13 | Equalizer amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS575410A true JPS575410A (en) | 1982-01-12 |
Family
ID=13697024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7968480A Pending JPS575410A (en) | 1980-06-13 | 1980-06-13 | Equalizer amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS575410A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194827A (en) * | 1991-04-10 | 1993-03-16 | Ampex Systems Corporation | Voltage controlled high frequency equalization |
| WO2023145093A1 (en) * | 2022-01-31 | 2023-08-03 | 日本電信電話株式会社 | Current-to-voltage conversion device |
-
1980
- 1980-06-13 JP JP7968480A patent/JPS575410A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194827A (en) * | 1991-04-10 | 1993-03-16 | Ampex Systems Corporation | Voltage controlled high frequency equalization |
| WO2023145093A1 (en) * | 2022-01-31 | 2023-08-03 | 日本電信電話株式会社 | Current-to-voltage conversion device |
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