JPS5657317A - Low-frequency electric power amplifying circuit - Google Patents

Low-frequency electric power amplifying circuit

Info

Publication number
JPS5657317A
JPS5657317A JP13332179A JP13332179A JPS5657317A JP S5657317 A JPS5657317 A JP S5657317A JP 13332179 A JP13332179 A JP 13332179A JP 13332179 A JP13332179 A JP 13332179A JP S5657317 A JPS5657317 A JP S5657317A
Authority
JP
Japan
Prior art keywords
terminal
signal
electric power
low
frequency electric
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
JP13332179A
Other languages
Japanese (ja)
Inventor
Kiyomitsu Nishimura
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 JP13332179A priority Critical patent/JPS5657317A/en
Publication of JPS5657317A publication Critical patent/JPS5657317A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers

Landscapes

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

Abstract

PURPOSE:To reduce the number of the large-space and large-capacity electrolytic capacitors and thus reduce greatly the space, by using two low-frequency electric power amplifiers and then securing the function of the reverse amplifier for one of the two amplifiers. CONSTITUTION:The signal is applied from the signal line 26 and through the input terminal 39 and then amplified through the low-frequency electric power amplifier 36 to be supplied to the output terminal 41. The singal of the terminal 41 is fed back to the feedback terminal 40 via the resistance 68, and this feedback signal is applied to the feedback terminal 43 of the low-frequency electric power amplifier 37 via the resistance 67, the capacitor 71 and the resistance 69 each. The amplifier 37 functions as a reverse amplifier since the input terminal 42 is earthed and the signal is applied through the terminal 43. And the signal from terminal 43 emerges at the output terminal 44 in the form of the signal having the opposite phase to the terminal 41. Then the same value is set for the resistances 67 and 69 as well as 68 and 70 each, and thus the same amplitude and the opposite phase are secured for the signals between the terminals 41 and 44. Thus nearly the double voltage is supplied across the load 28. As a result, the boostrap-use electrolytic capacitor can be eliminated.
JP13332179A 1979-10-15 1979-10-15 Low-frequency electric power amplifying circuit Pending JPS5657317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13332179A JPS5657317A (en) 1979-10-15 1979-10-15 Low-frequency electric power amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13332179A JPS5657317A (en) 1979-10-15 1979-10-15 Low-frequency electric power amplifying circuit

Publications (1)

Publication Number Publication Date
JPS5657317A true JPS5657317A (en) 1981-05-19

Family

ID=15101959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13332179A Pending JPS5657317A (en) 1979-10-15 1979-10-15 Low-frequency electric power amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5657317A (en)

Similar Documents

Publication Publication Date Title
JPS55136708A (en) Voltage current conversion circuit
JPS6468009A (en) Active filter type signal adjusting circuit
JPS5657317A (en) Low-frequency electric power amplifying circuit
ES8200801A1 (en) Variable-gain differential amplifier
JPS5787216A (en) Amplifying circuit
JPS5648716A (en) Offset voltage compensating circuit
GB2052200A (en) Oscillator having low noise signal extraction circuit
JPS5648186A (en) Photodetector
DE3168657D1 (en) Filter circuit suitable for being fabricated into integrated circuit
GB1471875A (en) Weighing apparatus
JPS55154817A (en) Gradient signal generating circuit
JPS57154065A (en) Current voltage converter
JPS55138905A (en) Bias circuit of amplifier
DE3473103D1 (en) Amplifier in which the stages are dc-coupled
JPS54151307A (en) Supply circuit for communication current
JPS5753129A (en) Active filter
JPS5617503A (en) Narrow-band amplifying circuit using surface wave filter
JPS5560314A (en) Protective device for amplifier circuit
JPS5675712A (en) Power amplifier
JPS57182280A (en) Analog adding circuit
SU1193771A1 (en) Amplifying device
JPS55121716A (en) Amplification circuit
JPS54132157A (en) Amplifier
JPS6453612A (en) Amplifier
JPS5737910A (en) Negative feedback amplifier