JPS6047309U

JPS6047309U - Transistor amplifier bias circuit

Info

Publication number: JPS6047309U
Application number: JP13931683U
Authority: JP
Inventors: 若松　茂美
Original assignee: 日本電気株式会社
Priority date: 1983-09-08
Filing date: 1983-09-08
Publication date: 1985-04-03

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のバイアス回路による高周波広帯−域増幅
器の一例の回路図、第２図はその直流バイアス回路をプ
ッシュプル回路の一方のみとり出して示す回路図、第３
図、第４図は本考案のバイアス回路実施例の回路図であ
る。Ｒ□、Ｒ□’　ｇ　Ｒａｇ　Ｒ２’　ｇ　Ｒ３ｇ　Ｒ３
’　ｇ　Ｒ４？　Ｒ４’　、　Ｒ，、Ｒ５’　、　Ｒ，
、Ｒ，’　、　Ｒ７，Ｒ，、Ｒ，’・・・・・・抵抗、
Ｑ１？　Ｑ２？　Ｑ３９　Ｑ４”””　トランジスタ、
１・・・・・・入力端子、３・・・・・・出力端子、３
・・・・・・電源、Ｃ，、Ｃ□′、Ｃ２・・・・・・コ
ンデンサ、Ｄｚ・・・・・・定電圧ダイオード。Figure 1 is a circuit diagram of an example of a high frequency broadband amplifier using a conventional bias circuit, Figure 2 is a circuit diagram showing only one side of the push-pull circuit of the DC bias circuit, and Figure 3
FIG. 4 is a circuit diagram of an embodiment of the bias circuit of the present invention. R□, R□' g Rag R2' g R3g R3
' g R4? R4', R,, R5', R,
,R,',R7,R,,R,'...Resistance,
Q1? Q2? Q39 Q4””” Transistor,
1...Input terminal, 3...Output terminal, 3
...Power supply, C,, C□', C2... Capacitor, Dz... Constant voltage diode.

Claims

[Scope of utility model registration request]

It has two transistors connected in series in terms of DC and a resistor connected to the emitter of one transistor, and a constant voltage diode is connected to the other end of the resistor connected to the base of the transistor on the side where the resistor is not connected to the emitter. A bias circuit for a transistor and a star, which is characterized by connecting the following.