JPS6451811A - Amplifier device - Google Patents

Amplifier device

Info

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
Application number
JP20989387A
Other languages
Japanese (ja)
Other versions
JPH0585086B2 (en
Inventor
Noboru Unosawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP20989387A priority Critical patent/JPS6451811A/en
Publication of JPS6451811A publication Critical patent/JPS6451811A/en
Publication of JPH0585086B2 publication Critical patent/JPH0585086B2/ja
Granted legal-status Critical Current

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.
JP20989387A 1987-08-24 1987-08-24 Amplifier device Granted JPS6451811A (en)

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)

Also Published As

Publication number Publication date
JPH0585086B2 (en) 1993-12-06

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