JPS63200912U - - Google Patents
Info
- Publication number
- JPS63200912U JPS63200912U JP9229087U JP9229087U JPS63200912U JP S63200912 U JPS63200912 U JP S63200912U JP 9229087 U JP9229087 U JP 9229087U JP 9229087 U JP9229087 U JP 9229087U JP S63200912 U JPS63200912 U JP S63200912U
- Authority
- JP
- Japan
- Prior art keywords
- output
- transistor
- current
- mirror circuit
- collector
- 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
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Amplifiers (AREA)
Description
第１図は、本考案の一実施例を示す回路図、第
２図は従来の電力増幅回路を示す回路図、及び第
３図は第２図の動作を説明する為の特性図である
。
１……第１トランジスタ、２……第２トランジ
スタ、３……第３トランジスタ、４……第４トラ
ンジスタ、５……定電流トランジスタ、８……第
１電流ミラー回路、１１……第２電流ミラー回路
、１２……第１出力トランジスタ、１３……第２
出力トランジスタ、１５……第３出力トランジス
タ、１７……入力端子、１８……出力端子、１９
……シヨツトキーダイオード。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing a conventional power amplifier circuit, and FIG. 3 is a characteristic diagram for explaining the operation of FIG. 2. DESCRIPTION OF SYMBOLS 1...First transistor, 2...Second transistor, 3...Third transistor, 4...Fourth transistor, 5...Constant current transistor, 8 ...First current mirror circuit, 11 ...Second current Mirror circuit, 12...first output transistor, 13...second
Output transistor, 15... Third output transistor, 17... Input terminal, 18... Output terminal, 19
...Shotkey diode.
Claims (1)
２トランジスタと、エミツタとベースが共通接続
された第３及び第４トランジスタと、前記第１乃
至第４トランジスタのエミツタに共通に接続され
た定電流源と、前記第１トランジスタのコレクタ
に入力側が、前記第４トランジスタのコレクタに
出力側が接続された第１電流ミラー回路と、前記
第３トランジスタのコレクタに入力側が、前記第
２トランジスタのコレクタに出力側が接続された
第２電流ミラー回路と、前記第２トランジスタの
コレクタ電流と前記第２電流ミラー回路の出力電
流との差電流を増幅する第１出力トランジスタと
、前記第４トランジスタのコレクタ電流と前記第
１電流ミラー回路の出力電流との差電流を増幅す
る第２出力トランジスタと、該第２出力トランジ
スタの出力電流と等しい電流を流す第３出力トラ
ンジスタとから成り、前記第１出力トランジスタ
の出力端と前記第３出力トランジスタの出力端と
を共通接続して出力端子と成した増幅回路におい
て、前記第１電流ミラー回路の入力側にカソード
が、出力側にアノードが接続されたシヨツトキー
ダイオードを設けたことを特徴とする電力増幅回
路。 first and second transistors whose emitters and bases are commonly connected; third and fourth transistors whose emitters and bases are commonly connected; and a constant current source that is commonly connected to the emitters of the first to fourth transistors. and a first current mirror circuit having an input side connected to the collector of the first transistor, an output side connected to the collector of the fourth transistor, an input side connected to the collector of the third transistor, and an output side connected to the collector of the second transistor. a second current mirror circuit connected thereto; a first output transistor that amplifies the difference current between the collector current of the second transistor and the output current of the second current mirror circuit; a second output transistor that amplifies the difference current from the output current of the first current mirror circuit, and a third output transistor that flows a current equal to the output current of the second output transistor, and the output terminal of the first output transistor and In the amplifier circuit in which the output terminal of the third output transistor is commonly connected to form an output terminal, a Schottky diode is provided whose cathode is connected to the input side of the first current mirror circuit and whose anode is connected to the output side of the first current mirror circuit. A power amplifier circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9229087U JPS63200912U (en) | 1987-06-16 | 1987-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9229087U JPS63200912U (en) | 1987-06-16 | 1987-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63200912U true JPS63200912U (en) | 1988-12-23 |
Family
ID=30953865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9229087U Pending JPS63200912U (en) | 1987-06-16 | 1987-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63200912U (en) |
-
1987
- 1987-06-16 JP JP9229087U patent/JPS63200912U/ja active Pending
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