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A power amplifier system

A power amplifier, amplifier technology

Active Publication Date: 2017-08-29
NINGBO SOUNDKING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing sound playback equipment connected to multiple power amplifiers, when one of the power amplifiers fails, the speaker connected to the power amplifier cannot emit sound, resulting in the sound amplification area where the speaker is located cannot be amplified normally. Affect the overall playback effect
[0003] Because the power amplifier often works in a high-power state, it generates serious heat, so it is the equipment with the highest failure rate in the sound playback equipment. At present, when the power amplifier fails, the operator needs to manually switch to the backup power amplifier, and it needs to be restarted. Connecting a large number of lines is not only cumbersome to operate, but also takes a long time to repair, and it will also have a negative impact on the performance occasion where the playback equipment is located

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: if figure 1 As shown, a power amplifier system, the power amplifier module includes a group of switchable power amplifier groups 1 and a power amplifier control module for controlling the group of switchable power amplifier groups 1, each group of switchable power amplifier groups 1 includes a normal power Amplifier and a backup power amplifier, each switchable power amplifier group 1 is connected to the corresponding speaker through the speaker cable control module 2, the power amplifier control module includes an automatic switching control module 3, a power amplifier power switching module 4 and a signal detection control module 5, The automatic switching control module 3 is connected with the power amplifier power switching module 4 and the signal detection control module 5 respectively, the power amplifier power switching module 4 is connected with the normal power amplifier and the backup power amplifier respectively, and the signal detection contro...

Embodiment 2

[0018] Embodiment 2: the rest is the same as Embodiment 1, the difference is that each switchable power amplifier group 1 includes two normal power amplifiers and a backup power amplifier, such as Figure 4 As shown, the signal detection control module 5 includes a first double-connected double-cut relay JK1, a second double-connected double-cut relay JK2, a third double-connected double-cut relay JK3, a fourth double-connected double-cut relay JK4, and a fifth double-connected double-cut relay JK4. Cutting relay JK5, sixth double-connected double-cutting relay JK6, first network interface IN1, second network interface IN2, third network interface OUT1, second optocoupler U2, third optocoupler U3, fourth resistor R4, tenth Three resistors R13 and fifteenth resistor R15, the first double-connected double-cut relay JK1, the second double-connected double-cut relay JK2, the third double-connected double-cut relay JK3, the fourth double-connected double-cut relay JK4, the fifth dou...

Embodiment 3

[0020] Embodiment 3: the rest is the same as Embodiment 1, the difference is that the power amplifier module includes three switchable power amplifier groups 1, and each switchable power amplifier group 1 includes four normal power amplifiers and one backup power amplifier.

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Abstract

The invention discloses a power amplifier system. The power amplifier system is characterized by comprising at least one switchable power amplifier group and a power amplifier control module, wherein each switchable power amplifier group comprises at least one normal power amplifier and one standby power amplifier; the power amplifier control module comprises an automatic switching control module, a power amplifier power supply switching module and a signal detection control module; the automatic switching control module is connected with the power amplifier power supply switching module and the signal detection control module; the power amplifier power supply switching module is connected with the normal power amplifier and the standby power amplifier; the signal detection control module is connected with the normal power amplifier and the standby power amplifier. The power amplifier system disclosed by the invention has the advantages that automatic detection on the normal power amplifier which is in failure can be realized, the normal power amplifier which is in failure can be automatically switched into the standby power amplifier to continuously control sound playing, the normal power amplifier which is in failure can be disassembled and maintained in time, and the whole sound playing effect is increased.

Description

technical field [0001] The invention relates to a circuit structure, especially a power amplifier system. Background technique [0002] In the existing playback equipment connected to multiple power amplifiers, when one of the power amplifiers fails, the speaker connected to the power amplifier cannot emit sound, resulting in the failure of the sound amplification area where the speaker is located. affect the overall playback effect. [0003] Because the power amplifier often works in a high-power state, the heat is more serious, so it is the equipment with the highest failure rate in the sound playback equipment. At present, when the power amplifier fails, the operator needs to manually switch to the backup power amplifier. Connecting a large number of lines is not only cumbersome to operate, but also takes a long time to repair, and it will also have a negative impact on the performance occasion where the playback equipment is located. Contents of the invention [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/20
CPCH03F3/20
Inventor 李争张强
Owner NINGBO SOUNDKING ELECTRONICS
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