JPS6412605A - Low distortion rate class bd amplifier - Google Patents
Low distortion rate class bd amplifierInfo
- Publication number
- JPS6412605A JPS6412605A JP62166978A JP16697887A JPS6412605A JP S6412605 A JPS6412605 A JP S6412605A JP 62166978 A JP62166978 A JP 62166978A JP 16697887 A JP16697887 A JP 16697887A JP S6412605 A JPS6412605 A JP S6412605A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- positive
- voltage
- amplifier
- 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 obtain a high power efficiency without causing distortion by using a switching amplifier being the series connection of a flywheeling diode, a switch and a power supply so as to amplify each pulse width modulation signal, demodulating the signals into bipolar analog signals by two sets of LC filters and synthesizing both the signals. CONSTITUTION:A positive signal amplifier circuit 2 outputs a voltage being ten times the positive voltage of an input signal and a pulse signal is generated via a rectifier circuit 2A and a pulse width modulation circuit 2E. With the signal voltage at a low level, a MOSFET switch 2F in a switching amplifier 2I is closed and a current flows from a positive power supply 2G to an inductor in an LC filter 2J and electromagnetic energy is stored. When a pulse signal voltage reaches a high level, the switch 2F is opened, a current flows to the inductor is discharged into a synthesis circuit 3. Moreover, the circuit configura tion and its operation of a negative signal amplifier circuit 4 are similar to those of the positive signal amplifier circuit 2. Thus, the production of distortion is reduced and the power efficiency is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62166978A JPS6412605A (en) | 1987-07-06 | 1987-07-06 | Low distortion rate class bd amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62166978A JPS6412605A (en) | 1987-07-06 | 1987-07-06 | Low distortion rate class bd amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6412605A true JPS6412605A (en) | 1989-01-17 |
Family
ID=15841134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62166978A Pending JPS6412605A (en) | 1987-07-06 | 1987-07-06 | Low distortion rate class bd amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6412605A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007174671A (en) * | 2005-12-21 | 2007-07-05 | Internatl Rectifier Corp | Class-d amplifier with start-up click noise elimination |
JP4856167B2 (en) * | 2005-03-24 | 2012-01-18 | ハイダック プロセス テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Filter equipment and method of operating filter equipment |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114407A (en) * | 1980-02-13 | 1981-09-09 | Matsushita Electric Ind Co Ltd | Power amplifier |
JPS56162515A (en) * | 1980-05-20 | 1981-12-14 | Sanyo Electric Co Ltd | Power amplifying circuit |
-
1987
- 1987-07-06 JP JP62166978A patent/JPS6412605A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114407A (en) * | 1980-02-13 | 1981-09-09 | Matsushita Electric Ind Co Ltd | Power amplifier |
JPS56162515A (en) * | 1980-05-20 | 1981-12-14 | Sanyo Electric Co Ltd | Power amplifying circuit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4856167B2 (en) * | 2005-03-24 | 2012-01-18 | ハイダック プロセス テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Filter equipment and method of operating filter equipment |
JP2007174671A (en) * | 2005-12-21 | 2007-07-05 | Internatl Rectifier Corp | Class-d amplifier with start-up click noise elimination |
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