JPS55156404A - Smoothing circuit - Google Patents

Smoothing circuit

Info

Publication number
JPS55156404A
JPS55156404A JP6430979A JP6430979A JPS55156404A JP S55156404 A JPS55156404 A JP S55156404A JP 6430979 A JP6430979 A JP 6430979A JP 6430979 A JP6430979 A JP 6430979A JP S55156404 A JPS55156404 A JP S55156404A
Authority
JP
Japan
Prior art keywords
transistor
potential
input signal
resistance
signal
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
JP6430979A
Other languages
Japanese (ja)
Inventor
Nobuharu Yazawa
Yasunori Sakaguchi
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 JP6430979A priority Critical patent/JPS55156404A/en
Publication of JPS55156404A publication Critical patent/JPS55156404A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
    • H03D1/18—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of semiconductor devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

PURPOSE:To obtain a smoothing circuit functioning to rectify and smooth an input signal of a low level by coupling the amplification output of an input AC signal direct to a transistor in terms of direct current and then by leading an output out from a capacitor connected to its emitter. CONSTITUTION:Input signal V1 from input AC signal source 1 is supplied to the base of transistor 11 and its potential Vb1 has a value equal to the sum of AC signal V1 and a voltage developed by resistance R1 of resistance 14 and base current Ib1 while base potential Vb2 of transistor 12 becomes V1+R1Ib1+2vBE. As a result, a current of Vb2/R3 flows through resistance 16(R3) and base potential Vb4 of transistor 17 increases 1+R2/R3 times the input signal V1 is zero, emitter potential Ve4 of transistor 17 is shown by expression (2) and input signal as shown by expression (1). In case that input signal V1 amplified by a smoothing circuit composed of resistance 5 and capacitor 6 can obtain a smoothed potential by smoothing even when its level is low.
JP6430979A 1979-05-23 1979-05-23 Smoothing circuit Pending JPS55156404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6430979A JPS55156404A (en) 1979-05-23 1979-05-23 Smoothing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6430979A JPS55156404A (en) 1979-05-23 1979-05-23 Smoothing circuit

Publications (1)

Publication Number Publication Date
JPS55156404A true JPS55156404A (en) 1980-12-05

Family

ID=13254503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6430979A Pending JPS55156404A (en) 1979-05-23 1979-05-23 Smoothing circuit

Country Status (1)

Country Link
JP (1) JPS55156404A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141172A (en) * 1983-12-28 1985-07-26 Oki Electric Ind Co Ltd Full-wave rectifier circuit
JPS62154805A (en) * 1985-12-26 1987-07-09 Sony Corp Peak detecting circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141172A (en) * 1983-12-28 1985-07-26 Oki Electric Ind Co Ltd Full-wave rectifier circuit
JPH0421431B2 (en) * 1983-12-28 1992-04-10 Oki Denki Kogyo Kk
JPS62154805A (en) * 1985-12-26 1987-07-09 Sony Corp Peak detecting circuit
JPH0787300B2 (en) * 1985-12-26 1995-09-20 ソニー株式会社 Peak detection circuit

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