JPS5610717A - Emitter-follower circuit of transistor - Google Patents

Emitter-follower circuit of transistor

Info

Publication number
JPS5610717A
JPS5610717A JP8491979A JP8491979A JPS5610717A JP S5610717 A JPS5610717 A JP S5610717A JP 8491979 A JP8491979 A JP 8491979A JP 8491979 A JP8491979 A JP 8491979A JP S5610717 A JPS5610717 A JP S5610717A
Authority
JP
Japan
Prior art keywords
diodes
trq1
lower limit
units
electrodes
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
JP8491979A
Other languages
Japanese (ja)
Inventor
Hiroshi Gomi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8491979A priority Critical patent/JPS5610717A/en
Publication of JPS5610717A publication Critical patent/JPS5610717A/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
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower

Landscapes

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

Abstract

PURPOSE:To ensure the independent setting for the working level and the lower limit level of the dynamic range, by using plural numbers of transistors and diodes among which the same electrodes are connected to each other. CONSTITUTION:The electrodes of (n) units of transistors TRQ1-Qn are connected to each other; and also the electrodes are also connected to each other for (m) units of diodes D1-Dm respectively. Then input terminal P1 is connected to the base of TRQ1-Qn; and the emitters of TRQ1-Qn and the cathodes of diodes D1-Dm are grounded via resistance R1. At the same time, the collectors of TRQ1-Qn are connected to power source VCC; and the anodes of diodes D1-Dm are connected to source VCC via resistance R2 as well as to output terminal P2. With such constitution of the circuit, the lower limit level of the dynamic range is decided by the resistance ratio R2/R1. And the working level can be varied by the number ratio n/m of the units connected in parallel. As a result, the independent setting is possible for the lower limit level and the working level each.
JP8491979A 1979-07-06 1979-07-06 Emitter-follower circuit of transistor Pending JPS5610717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8491979A JPS5610717A (en) 1979-07-06 1979-07-06 Emitter-follower circuit of transistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8491979A JPS5610717A (en) 1979-07-06 1979-07-06 Emitter-follower circuit of transistor

Publications (1)

Publication Number Publication Date
JPS5610717A true JPS5610717A (en) 1981-02-03

Family

ID=13844112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8491979A Pending JPS5610717A (en) 1979-07-06 1979-07-06 Emitter-follower circuit of transistor

Country Status (1)

Country Link
JP (1) JPS5610717A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56106600U (en) * 1980-12-18 1981-08-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56106600U (en) * 1980-12-18 1981-08-19

Similar Documents

Publication Publication Date Title
JPS5659321A (en) Constant-current regulated power circuit
CH627616B (en) VOLTAGE SELECTOR CIRCUIT.
JPS5553924A (en) Semiconductor logic circuit
ES468295A1 (en) Crosspoint bias circuit arrangement
JPS5610717A (en) Emitter-follower circuit of transistor
JPS5561059A (en) Semiconductor ic device
JPS56153816A (en) Signal processing circuit
JPS5534537A (en) Cascade type current division circuit
JPS5531345A (en) Level conversion circuit
JPS548452A (en) Analog gate circuit
JPS55118229A (en) Multiplexer circuit
JPS55114037A (en) Output buffer circuit
JPS5467342A (en) Bipolar memory cell
JPS5753152A (en) Inverter circuit
JPS5694577A (en) Semiconductor storage device
JPS5763847A (en) Transistor circut
JPS5769932A (en) Current switching type logical circuit
JPS54111747A (en) Drive circuit for matrix
JPS5792909A (en) Power amplifying circuit
JPS55151806A (en) Signal level control circuit
JPS54140842A (en) Flip-flop circuit
JPS555575A (en) Logic circuit
JPS54125958A (en) Ttl circuit
JPS5363956A (en) Power amplifier
JPS55166319A (en) Limiter circuit