JPH0466810U - - Google Patents
Info
- Publication number
- JPH0466810U JPH0466810U JP11081690U JP11081690U JPH0466810U JP H0466810 U JPH0466810 U JP H0466810U JP 11081690 U JP11081690 U JP 11081690U JP 11081690 U JP11081690 U JP 11081690U JP H0466810 U JPH0466810 U JP H0466810U
- Authority
- JP
- Japan
- Prior art keywords
- detection section
- transistor
- collector current
- amplification transistor
- detects
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図はこの考案の一実施例によるトランジス
タ増幅器を示す回路図、第２図は従来のトランジ
スタ増幅器を示す回路図である。
図において、１……増幅用トランジスタ、５…
…抵抗（検出部）、６……電圧降下検出用トラン
ジスタ、８……ベースバイアス電流制御用トラン
ジスタ（制御回路）。なお、図中、同一の符号は
同一、又は相当部分を示している。
FIG. 1 is a circuit diagram showing a transistor amplifier according to an embodiment of this invention, and FIG. 2 is a circuit diagram showing a conventional transistor amplifier. In the figure, 1... amplification transistor, 5...
. . . Resistor (detection section), 6 . . . Voltage drop detection transistor, 8 . . . Base bias current control transistor (control circuit). In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
るトランジスタ増幅器において、前記増幅用トラ
ンジスタのコレクタ電流を検出する検出部と、該
検出部により検出されたコレクタ電流の大きさに
応じて前記増幅用トランジスタのベースバイアス
電流を制御する制御回路とがそなえられたことを
特徴とするトランジスタ増幅器。 In a transistor amplifier comprising an amplification transistor that amplifies a signal, a detection section that detects the collector current of the amplification transistor, and a detection section that detects the collector current of the amplification transistor according to the magnitude of the collector current detected by the detection section. A transistor amplifier characterized by comprising a control circuit that controls a base bias current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11081690U JPH0466810U (en) | 1990-10-22 | 1990-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11081690U JPH0466810U (en) | 1990-10-22 | 1990-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0466810U true JPH0466810U (en) | 1992-06-12 |
Family
ID=31858209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11081690U Pending JPH0466810U (en) | 1990-10-22 | 1990-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0466810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001099272A1 (en) * | 2000-06-20 | 2001-12-27 | Nec Corporation | Base bias circuit, and power amplifier using the base bias circuit |
-
1990
- 1990-10-22 JP JP11081690U patent/JPH0466810U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001099272A1 (en) * | 2000-06-20 | 2001-12-27 | Nec Corporation | Base bias circuit, and power amplifier using the base bias circuit |