JPS5639608A - Current miller circuit - Google Patents

Current miller circuit

Info

Publication number
JPS5639608A
JPS5639608A JP11420179A JP11420179A JPS5639608A JP S5639608 A JPS5639608 A JP S5639608A JP 11420179 A JP11420179 A JP 11420179A JP 11420179 A JP11420179 A JP 11420179A JP S5639608 A JPS5639608 A JP S5639608A
Authority
JP
Japan
Prior art keywords
collector
voltage
transistor
trq4
trq2
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
JP11420179A
Other languages
Japanese (ja)
Inventor
Naoya Fujita
Toru Sanbe
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 JP11420179A priority Critical patent/JPS5639608A/en
Publication of JPS5639608A publication Critical patent/JPS5639608A/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
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To enable a current Miller circuit to operate stably without oscillating when a voltage drops, by clamping the collector potential of the transistor of the circuit so that the transistor will not be saturated. CONSTITUTION:The collector and base of transistor TRQ4 are connected in common to the collector of transistor Q1 and its emitter is connected to the collector of output side TRQ2. Then, TRQ4 operates as a diode and while the emitter side is the anode, base and collector sides are the cathode. Here, if power voltage Vcc drops, the emitter-collector voltage of TRQ2 decreases according to the drop in Vcc. On the other hand, when TRQ4 turns on, the voltage is clamped to the potential obtained by adding the forward volrage drop across the diode to the collector potential of TRQ1, and consequently TRQ2 will not be saturated, so that no oscillation will be caused. Conseqently, the current Miller circuit can be operated stably without any oscillation during a decrease in voltage.
JP11420179A 1979-09-07 1979-09-07 Current miller circuit Pending JPS5639608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11420179A JPS5639608A (en) 1979-09-07 1979-09-07 Current miller circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11420179A JPS5639608A (en) 1979-09-07 1979-09-07 Current miller circuit

Publications (1)

Publication Number Publication Date
JPS5639608A true JPS5639608A (en) 1981-04-15

Family

ID=14631727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11420179A Pending JPS5639608A (en) 1979-09-07 1979-09-07 Current miller circuit

Country Status (1)

Country Link
JP (1) JPS5639608A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647840A (en) * 1985-02-14 1987-03-03 Kabushiki Kaisha Toshiba Current mirror circuit
JPH0296411A (en) * 1988-09-30 1990-04-09 Matsushita Electric Ind Co Ltd Current mirror circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5426646A (en) * 1977-07-30 1979-02-28 Toshiba Corp Current miller circuit
US4361816A (en) * 1980-06-30 1982-11-30 Rca Corporation Current mirror amplifiers with programmable gain

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5426646A (en) * 1977-07-30 1979-02-28 Toshiba Corp Current miller circuit
US4361816A (en) * 1980-06-30 1982-11-30 Rca Corporation Current mirror amplifiers with programmable gain

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647840A (en) * 1985-02-14 1987-03-03 Kabushiki Kaisha Toshiba Current mirror circuit
JPH0296411A (en) * 1988-09-30 1990-04-09 Matsushita Electric Ind Co Ltd Current mirror circuit
JP2586601B2 (en) * 1988-09-30 1997-03-05 松下電器産業株式会社 Current mirror circuit

Similar Documents

Publication Publication Date Title
JPS5646310A (en) Amplifying circuit
JPS5659321A (en) Constant-current regulated power circuit
JPS5639608A (en) Current miller circuit
JPS5644209A (en) Signal converting circuit
JPS54102859A (en) Pulse amplifier circuit
JPS5689130A (en) Electronic circuit
JPS5258450A (en) Transistor output circuit
JPS55112015A (en) Voltage follower circuit
JPS548452A (en) Analog gate circuit
JPS5642410A (en) Emitter follower circuit
JPS5318367A (en) Bias circuit
JPS53128928A (en) Horizontal output circuit having power source stabilizing function
JPS55146521A (en) Constant-current circuit
JPS54109360A (en) Transistor switch circuit
JPS548953A (en) Current amplifying circuit
JPS55109004A (en) Detection circuit
JPS5518117A (en) Schmitt circuit
JPS54107658A (en) Oscillation circuit
JPS5483311A (en) Vertical deflection output circut
FR2329103A1 (en) Working range extending active circuit for semiconductor switches - has transistor biased to provide current path for switch feed
JPS5556214A (en) Voltage stabilizer circuit
JPS55153016A (en) Bias circuit
JPS5758405A (en) Semiconductor electric circuit
JPS53106429A (en) Inverter circuit
JPS5459841A (en) Transistor holding circuit