JPS56134810A - Class "b" push-pull output circuit - Google Patents
Class "b" push-pull output circuitInfo
- Publication number
- JPS56134810A JPS56134810A JP3743480A JP3743480A JPS56134810A JP S56134810 A JPS56134810 A JP S56134810A JP 3743480 A JP3743480 A JP 3743480A JP 3743480 A JP3743480 A JP 3743480A JP S56134810 A JPS56134810 A JP S56134810A
- Authority
- JP
- Japan
- Prior art keywords
- trq
- output
- collector
- current
- inverted darlington
- 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 reduce the positive residual voltage to prevent the pop sound, by forming a positive half-wave output by the pnp driving transistor and the npn output transistor which are connected in the inverted Darlington mode and by providing a current pushing-out circuit in the driving transistor.
CONSTITUTION: The collector output of amplifying transistor (TR)Q14 is connected in the inverted Darlington mode through the emitter and the collector of TRQ26 and is input to driving TRQ27 which drives output TRQ29 which forms a negative half wave. The collector output of TRQ14 has the level shifted by diode Q15 and is connected in the inverted Darlington mode through current Miller circuits Q21 and Q22 and is input to TRQ23 which drives TRQ24 which forms a positive half wave. A constant-current pushing-out circuit based on constant-current TRQ11 which constitutes the Miller circuit is provided in the base of TRQ23. Since the capacity between the collector and the base of TRQ23 is changed up by this provided circuit, occurrence of the pop sound is prevented. Further, the positive residual voltage is reduced by TRs Q23 and Q24 in the inverted Darlington mode.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3743480A JPS56134810A (en) | 1980-03-26 | 1980-03-26 | Class "b" push-pull output circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3743480A JPS56134810A (en) | 1980-03-26 | 1980-03-26 | Class "b" push-pull output circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56134810A true JPS56134810A (en) | 1981-10-21 |
Family
ID=12497399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3743480A Pending JPS56134810A (en) | 1980-03-26 | 1980-03-26 | Class "b" push-pull output circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56134810A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59228404A (en) * | 1983-06-10 | 1984-12-21 | Hitachi Ltd | Amplifier circuit |
JPH02248104A (en) * | 1989-03-20 | 1990-10-03 | Sanyo Electric Co Ltd | Shock sound prevention circuit |
US6930646B2 (en) | 1995-08-22 | 2005-08-16 | Mitsubishi Materials Corporation | Transponder and antenna |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55151804A (en) * | 1979-05-16 | 1980-11-26 | Ates Componenti Elettron | Ac linear transistor amplifier |
-
1980
- 1980-03-26 JP JP3743480A patent/JPS56134810A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55151804A (en) * | 1979-05-16 | 1980-11-26 | Ates Componenti Elettron | Ac linear transistor amplifier |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59228404A (en) * | 1983-06-10 | 1984-12-21 | Hitachi Ltd | Amplifier circuit |
JPH02248104A (en) * | 1989-03-20 | 1990-10-03 | Sanyo Electric Co Ltd | Shock sound prevention circuit |
JPH0656933B2 (en) * | 1989-03-20 | 1994-07-27 | 三洋電機株式会社 | Shock noise prevention circuit |
US6930646B2 (en) | 1995-08-22 | 2005-08-16 | Mitsubishi Materials Corporation | Transponder and antenna |
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