JPS55643A - Time constant circuit - Google Patents

Time constant circuit

Info

Publication number
JPS55643A
JPS55643A JP7321578A JP7321578A JPS55643A JP S55643 A JPS55643 A JP S55643A JP 7321578 A JP7321578 A JP 7321578A JP 7321578 A JP7321578 A JP 7321578A JP S55643 A JPS55643 A JP S55643A
Authority
JP
Japan
Prior art keywords
circuit
time constant
miller
resistance
transistors
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
JP7321578A
Other languages
Japanese (ja)
Inventor
Seiichi Ueda
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7321578A priority Critical patent/JPS55643A/en
Publication of JPS55643A publication Critical patent/JPS55643A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
    • H03K4/56—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor using a semiconductor device with negative feedback through a capacitor, e.g. Miller integrator

Landscapes

  • Amplifiers (AREA)

Abstract

PURPOSE:To increase further the virtual time constant by forming a time constant circuit by utilizing the Miller capacity and the microcurrent circuit in the current Miller circuit. CONSTITUTION:Resistance R1 is connected in series to transistors Q1 and Q2, and the constant voltage between the base and the emitter caused by these transistors is supplied to amplifier transistor circuits Q3 and Q4 which are connected by Darlington via resistance R2. Then load resistance R3 is connected to Miller capacity C provided between the base and the collector. Thus, a time constant circuit is formed. In other words, the output-side circuit in the current Miller circuit is used as the Miller integrating circuit, and the CR time constant can be made mu-times as much as the amplification factor of the output-side circuit for the virtual time constant.
JP7321578A 1978-06-19 1978-06-19 Time constant circuit Pending JPS55643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7321578A JPS55643A (en) 1978-06-19 1978-06-19 Time constant circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7321578A JPS55643A (en) 1978-06-19 1978-06-19 Time constant circuit

Publications (1)

Publication Number Publication Date
JPS55643A true JPS55643A (en) 1980-01-07

Family

ID=13511709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7321578A Pending JPS55643A (en) 1978-06-19 1978-06-19 Time constant circuit

Country Status (1)

Country Link
JP (1) JPS55643A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180829U (en) * 1985-05-02 1986-11-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180829U (en) * 1985-05-02 1986-11-11

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