JPS5593308A - Low frequency amplifier - Google Patents

Low frequency amplifier

Info

Publication number
JPS5593308A
JPS5593308A JP142179A JP142179A JPS5593308A JP S5593308 A JPS5593308 A JP S5593308A JP 142179 A JP142179 A JP 142179A JP 142179 A JP142179 A JP 142179A JP S5593308 A JPS5593308 A JP S5593308A
Authority
JP
Japan
Prior art keywords
transistor
collector
power supply
base
resistor
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
JP142179A
Other languages
Japanese (ja)
Other versions
JPS6056007B2 (en
Inventor
Hisao Otawa
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 JP54001421A priority Critical patent/JPS6056007B2/en
Publication of JPS5593308A publication Critical patent/JPS5593308A/en
Publication of JPS6056007B2 publication Critical patent/JPS6056007B2/en
Expired 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply

Landscapes

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

Abstract

PURPOSE:To avoid the effect due to the variation in the power supply voltage between the input and output, by adding the start circuit operated only at the transient state immediately after the power supply application and interrupted at the steadystate after that. CONSTITUTION:NPN transistor Q5 is used as the start transistor. The collector of the transistor Q5 is connected to the cathode of the diode D1, the emitter is to the ground terminal 12 via the resistor R9, and the base is connected to the collector of the transistor Q1 respectiely, and the output signal from the start circuit 21 is fed to the base of the transistor Q5. The start circuit 21 consists of the power supply 11 connected with the register R10, the diodes D4,D5 in series connection the anode of which is connected to the resistor R10 and the cathode of which is connected to the ground 12, and the NPN transistor Q6 the base of which is connected to the junction between the resistor R10 and the diode D4, the collector of which is to the base of the transistor Q5 and the collector of which is connected to the power supply 11 respectively.
JP54001421A 1979-01-08 1979-01-08 low frequency amplifier Expired JPS6056007B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54001421A JPS6056007B2 (en) 1979-01-08 1979-01-08 low frequency amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54001421A JPS6056007B2 (en) 1979-01-08 1979-01-08 low frequency amplifier

Publications (2)

Publication Number Publication Date
JPS5593308A true JPS5593308A (en) 1980-07-15
JPS6056007B2 JPS6056007B2 (en) 1985-12-07

Family

ID=11500993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54001421A Expired JPS6056007B2 (en) 1979-01-08 1979-01-08 low frequency amplifier

Country Status (1)

Country Link
JP (1) JPS6056007B2 (en)

Also Published As

Publication number Publication date
JPS6056007B2 (en) 1985-12-07

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