JPH0249212U - - Google Patents
Info
- Publication number
- JPH0249212U JPH0249212U JP12935288U JP12935288U JPH0249212U JP H0249212 U JPH0249212 U JP H0249212U JP 12935288 U JP12935288 U JP 12935288U JP 12935288 U JP12935288 U JP 12935288U JP H0249212 U JPH0249212 U JP H0249212U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- supply voltage
- power
- amplifier circuit
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案の一実施例を示す回路ブロツク
図、第２図は第１図の説明に供する波形図である
。
主な図番の説明、３…電力増幅回路、７…電源
回路、８…スイツチングレギユレータ、９…スイ
ツチ回路、１１…検出回路、１２…制御回路。
FIG. 1 is a circuit block diagram showing an embodiment of the present invention, and FIG. 2 is a waveform diagram for explaining FIG. 1. Explanation of main drawing numbers: 3 ...power amplifier circuit, 7...power supply circuit, 8...switching regulator, 9...switch circuit, 11...detection circuit, 12...control circuit.
Claims (1)
する音響増幅器の電力増幅回路に電源電圧を供給
する電源装置において、商用電源からの交流電圧
を整流及び平滑して直流の電源電圧を発生する電
源回路と、前記電力増幅回路からの出力信号に応
じて前記電源回路からの電源電圧スイツチングし
て前記電力増幅回路からの出力信号に応じた電源
電圧を発生すると共にその電源電圧を前記電力増
幅回路に供給するスイツチングレギユレータと、
前記電源回路からの電源電圧を選択的に前記スイ
ツチングレギユレータをバイパスして前記電力増
幅回路に供給する為のスイツチ回路とを備え、前
記電力増幅回路からの出力信号が所定の基準レベ
ルに達した後、所定時間、前記スイツチ回路を導
通状態にしたことを特徴とする音響増幅器の電源
装置。 In a power supply device that supplies power supply voltage to the power amplification circuit of an acoustic amplifier that amplifies input acoustic signals and drives speakers, a power supply circuit that rectifies and smoothes alternating current voltage from a commercial power source to generate direct current power supply voltage. and switching the power supply voltage from the power supply circuit according to the output signal from the power amplifier circuit to generate a power supply voltage according to the output signal from the power amplifier circuit, and supplying the power supply voltage to the power amplifier circuit. a switching regulator,
a switch circuit for selectively supplying the power supply voltage from the power supply circuit to the power amplifier circuit by bypassing the switching regulator, the output signal from the power amplifier circuit being at a predetermined reference level; 1. A power supply device for an acoustic amplifier, characterized in that the switch circuit is kept conductive for a predetermined period of time after the power supply voltage is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12935288U JPH0249212U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12935288U JPH0249212U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0249212U true JPH0249212U (en) | 1990-04-05 |
Family
ID=31383552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12935288U Pending JPH0249212U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0249212U (en) |
-
1988
- 1988-09-30 JP JP12935288U patent/JPH0249212U/ja active Pending
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