[go: up one dir, main page]

JPS56161705A - Amplifying circuit - Google Patents

Amplifying circuit

Info

Publication number
JPS56161705A
JPS56161705A JP6572580A JP6572580A JPS56161705A JP S56161705 A JPS56161705 A JP S56161705A JP 6572580 A JP6572580 A JP 6572580A JP 6572580 A JP6572580 A JP 6572580A JP S56161705 A JPS56161705 A JP S56161705A
Authority
JP
Japan
Prior art keywords
signal system
ground
relay
terminal
preamplifier
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
Application number
JP6572580A
Other languages
Japanese (ja)
Inventor
Yoshinobu Saeki
Atsushi Ishikawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6572580A priority Critical patent/JPS56161705A/en
Publication of JPS56161705A publication Critical patent/JPS56161705A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To enable noise reduction in accordance with the grounding for a power supply and a signal system of a preamplifier, by providing a grounding terminal for the signal system a power amplifier and providing two terminals for the supply of power source for selective use. CONSTITUTION:A connector 4 of power amplifier 20, for example, a grounding terminal (a) for signal system and power source terminals (b), (c) are provided and the terminal (a) is connected to a signal system ground 21a of an amplifier 21 and to a relay 22. Further, the terminal (b) is grounded via the relay 22 and grounded via a diode 24 and a relay 23, and the terminal (c) is grounded via the relay 23. Further, in a device 1A in which the ground for signal system and power source of a preamplifier is separated, and the ground for the signal system is connected to a ground 21b of the amplifier 21 through the relay 22 by using the terminals (a), (b). In a device 1B where the ground for the signal system and the power source of the preamplifier is connected, the ground of the signal system is grounded at 1Bb by using the terminals (a), (c). Thus, the noise in the system can be reduced in accordance with the grounding system of the preamplifier.
JP6572580A 1980-05-16 1980-05-16 Amplifying circuit Pending JPS56161705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6572580A JPS56161705A (en) 1980-05-16 1980-05-16 Amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6572580A JPS56161705A (en) 1980-05-16 1980-05-16 Amplifying circuit

Publications (1)

Publication Number Publication Date
JPS56161705A true JPS56161705A (en) 1981-12-12

Family

ID=13295274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6572580A Pending JPS56161705A (en) 1980-05-16 1980-05-16 Amplifying circuit

Country Status (1)

Country Link
JP (1) JPS56161705A (en)

Similar Documents

Publication Publication Date Title
GB2251148B (en) Optical repeater having loop-back function
ATE48931T1 (en) DEVICE FOR TESTING CIRCUIT BOARDS.
JPS56137598A (en) Sample hold circuit
AU5665486A (en) Signal processing device with a level adapter circuit
JPS5442967A (en) Bias supply circuit
JPS56161705A (en) Amplifying circuit
ES8206844A1 (en) Differential-type traversing-time ions pick-up head.
ES8705732A1 (en) Battery feed system.
JPS52112261A (en) Power amplifier circuit
JPS53142154A (en) Optical signal receiving circuit
JPS5644843A (en) Measuring device of acoustic emission
IE45878L (en) Circuit board connection assembly
JPS52153139A (en) Interior power line carrier system
JPS5436156A (en) Hybrid junction circuit
DE3067795D1 (en) Overvoltage protection circuit for line amplifiers
JPS5410648A (en) Operation monitor circuit for amplifier
JPS5582967A (en) Measuring method for electric signal wave-form using optical-fiber
JPS51137354A (en) Amplifier parallel operation system
JPS57103062A (en) Probe test device
JPS56119514A (en) Monitor signal amplifier
JPS5737998A (en) Microphone device
JPS5425781A (en) Light receiving apparatus
ES487172A1 (en) Circuit arrangement for transferring a signal
JPS52139346A (en) Differential amplifier
JPS5347221A (en) Gain monitoring system for relay amplifier