JPS57131107A - Power amplifier - Google Patents
Power amplifierInfo
- Publication number
- JPS57131107A JPS57131107A JP1563481A JP1563481A JPS57131107A JP S57131107 A JPS57131107 A JP S57131107A JP 1563481 A JP1563481 A JP 1563481A JP 1563481 A JP1563481 A JP 1563481A JP S57131107 A JPS57131107 A JP S57131107A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- transistor
- emitter
- base
- output transistor
- 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
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To easily obtain an integrated circuit without requriring a low resistance for stabilizing a bias current, by connecting a diode between the base and the emitter of an output transistor, and connecting the base and a driver transistor through a resistance.
CONSTITUTION: Between the base and the emitter of an output transistor Q2, a diode D in the polarity direction where it conducts when said transistor has conducted is connected in parallel, and also the base of the output transistor Q2 and the emitter of its driver transistor Q1 are connected through a resistance R'2. When the ratio of a junction area of the diode D to that of the output transistor Q2 is denoted as A, a current flowing in the resistance R'2 becomes 1/A of a current flowing in a resistance R2 in case when the resistance R2 has been inserted between the emitter of the output transistor Q2 and the output terminal, and its value is R'2=A.R2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1563481A JPS57131107A (en) | 1981-02-06 | 1981-02-06 | Power amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1563481A JPS57131107A (en) | 1981-02-06 | 1981-02-06 | Power amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57131107A true JPS57131107A (en) | 1982-08-13 |
Family
ID=11894146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1563481A Pending JPS57131107A (en) | 1981-02-06 | 1981-02-06 | Power amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57131107A (en) |
-
1981
- 1981-02-06 JP JP1563481A patent/JPS57131107A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57206113A (en) | Amplifier for limiter | |
JPS57173220A (en) | Comparator circuit | |
JPS52114250A (en) | Transistor circuit | |
JPS57167671A (en) | Semiconductor integrated circuit | |
JPS57204611A (en) | Voltage follower circuit | |
JPS5644209A (en) | Signal converting circuit | |
JPS5643808A (en) | Signal converting circuit | |
JPS57131107A (en) | Power amplifier | |
JPS52104076A (en) | Semiconductor unit | |
JPS5731213A (en) | Electric power amplifier | |
JPS5497465A (en) | Current detecting circuit | |
JPS5320554A (en) | Constant current circuit | |
JPS57103414A (en) | Current source circuit | |
JPS54125049A (en) | Transistor circuit | |
JPS5515511A (en) | Constant current circuit | |
JPS57119514A (en) | Flip-flop circuit | |
JPS56136007A (en) | Phase inverting circuit | |
JPS5571057A (en) | Current limiting circuit | |
JPS5567660A (en) | Power maker circuit | |
JPS5720008A (en) | Amplifying circuit | |
JPS55135916A (en) | Constant-voltage circuit | |
JPS56131213A (en) | Current miller circuit | |
JPS57101407A (en) | Amplifying circuit | |
JPS5547514A (en) | Constant current circuit | |
JPS5333081A (en) | Semiconductor light emitting device |