JPS6451811A - Amplifier device - Google Patents
Amplifier deviceInfo
- Publication number
- JPS6451811A JPS6451811A JP20989387A JP20989387A JPS6451811A JP S6451811 A JPS6451811 A JP S6451811A JP 20989387 A JP20989387 A JP 20989387A JP 20989387 A JP20989387 A JP 20989387A JP S6451811 A JPS6451811 A JP S6451811A
- Authority
- JP
- Japan
- Prior art keywords
- potential
- input terminal
- power supply
- low input
- amplifier
- 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
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Abstract
PURPOSE:To avoid the effect of common mode noise from a power supply system and to hardly affect a ground potential with inexpensive configuration by operating the titled amplifier based on a potential of a low input terminal together with the power supply circuit. CONSTITUTION:A potential at low side input terminal L is fed to each reference potential point of power supply circuits 70, 80 extracted via a buffer amplifier 60 and an output voltage of both the power supply circuits is fed to a preamplifier 10 and a gain switching amplifier 30 as power voltage. Thus, the part including the preamplifier 10 and the gain switching amplifier 30 is operated in the power system formed based on the potential at the low input terminal L. Thus, even when the ground potential is changed, the potential at the low input terminal L is changed but since the circuit is operated based on the low input terminal L, the signal conditioner not affected by the ground potential as a whole is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20989387A JPS6451811A (en) | 1987-08-24 | 1987-08-24 | Amplifier device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20989387A JPS6451811A (en) | 1987-08-24 | 1987-08-24 | Amplifier device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6451811A true JPS6451811A (en) | 1989-02-28 |
JPH0585086B2 JPH0585086B2 (en) | 1993-12-06 |
Family
ID=16580391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20989387A Granted JPS6451811A (en) | 1987-08-24 | 1987-08-24 | Amplifier device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6451811A (en) |
-
1987
- 1987-08-24 JP JP20989387A patent/JPS6451811A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0585086B2 (en) | 1993-12-06 |
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