CN206226383U

CN206226383U - A kind of commercial electronic divides power amplifier

Info

Publication number: CN206226383U
Application number: CN201621329937.4U
Authority: CN
Inventors: 闫天时
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-06
Filing date: 2016-12-06
Publication date: 2017-06-06
Anticipated expiration: 2026-12-06

Abstract

The utility model discloses a kind of commercial electronic frequency dividing power amplifier, including input control module, Active crossover module, frequency dividing mode control module, amplification module, audio output port and power circuit, three kinds of control models such as signal direct-passing mode, parallel input mode and bridge joint mode can be realized by input control module, the Three models such as the high pass mode of signal, direct-passing mode, low pass mode can be realized by dividing mode control module, so as to realize the Active crossover function of complexity with better simply mode.

Description

A kind of commercial electronic divides power amplifier

Technical field

The present invention relates to a kind of audio-frequency power amplifier, the commercial electronic such as more particularly to a kind of movie theatre stage frequency dividing power is put Big device.

Background technology

Currently known Commercial audio playback system includes power amplifier and audio amplifier, and audio amplifier is divided into two divided-frequency, three frequency division Or more frequency dividing, frequency dividing mode has power LC to divide and two kinds of Active crossover, and power LC frequency dividings are adapted to more than 1KHz part-frequency points Frequency division system, part-frequency point is too low can make power amplifier output short-circuit exist burn risk, while can also make frequency dividing original paper induction reactance Capacitive reactance is excessive to be difficult to, in this case common practice be using independent electronic frequency divider as band spitting equipment realize compared with The division function of low part-frequency point, but there is following imperfection part in independent electronic frequency divider：

1. equipment application connection is excessively complicated, and using inconvenience, domestic consumer is larger using difficulty.

2. equipment cost is higher, and client receives difficulty increasing.

3. equipment volume is increased, and small space uses inconvenience.

The content of the invention

It is an object of the invention to provide a kind of commercial electronic frequency dividing power amplifier, to solve the above problems.According to this hair Bright one side, there is provided a kind of commercial electronic divides power amplifier, including input control module, Active crossover module, Frequency dividing mode control module, amplification module, audio output port and power circuit, input control module receive external audio signal And it is sent to Active crossover module, Active crossover module receives the audio signal that input control module sends and to carry out high pass low Frequency dividing mode control module is sent to after logical scaling down processing, the frequency dividing mode control module receives Active crossover module and sends Audio signal and by being sent to amplification module after Schema control, amplification module receives what frequency dividing mode control module sent Audio model is simultaneously sent to output port after being amplified, and output port receives and amplifies the audio signal that mould 4 sends and simultaneously export To external equipment, the power circuit 6 provides power supply for above-mentioned each module, and product of the present invention is used simply, as long as client The position of the switch of selection frequency dividing mode control module can select the high pass low pass or straight-through characteristic of certain passage and only with a small amount of Electronic components are to be capable of achieving, and cost is relatively low, because Active crossover module and power amplifier circuit are attached together in a cabinet, therefore Do not increase external volume, therefore can be used in small space.

Brief description of the drawings

Fig. 1 is the theory diagram that a kind of commercial electronic of the invention divides power amplifier；

Fig. 2 is one embodiment of Active crossover module and frequency dividing mode control module；

Specific embodiment

The present invention is described in more detail below in conjunction with the accompanying drawings.

Fig. 1 schematically shows that the commercial electronic of one embodiment of the present invention divides the structure of power amplifier.

As shown in figure 1, a kind of commercial electronic frequency dividing power amplifier, including input control module 1, Active crossover module 2, Frequency dividing mode control module 3, amplification module 4, audio output port 5 and power circuit 6.

As shown in figure 1, input control module 1 receives external audio signal and is sent to Active crossover module 2, Active crossover Module 2 receives the audio signal that sends of input control module 1 and is sent to frequency dividing pattern after carrying out high pass low pass scaling down processing Control module 3, frequency dividing mode control module 3 receives the audio signal that Active crossover module 3 sends and by after Schema control It is sent to amplification module 4, amplification module 4 receives the audio model that frequency dividing mode control module 3 sends and sent out after being amplified Output port 5 is given, the audio signal that the reception amplification module 4 of output port 5 sends simultaneously is exported to external equipment, power circuit 6 provide power supply for above-mentioned each module.

As shown in figure 1, input control module 1 includes input port 11 and input control module 12, input port 11 is received External signal is simultaneously sent to input control module 12, and the control mode of input control module 12 includes signal direct-passing mode, parallel Three kinds of control models such as input mode and bridge joint mode.

As shown in figure 1, Active crossover module 2 includes high pass module 21 and low-pass module 22, by dividing Schema control mould Block 3 can make its working condition be operated in the Three models such as high pass mode, direct-passing mode, low pass mode respectively.

As shown in Fig. 2 C1, C2, R1, R2, U1 composition high pass module 21 and by changing the capacitance-resistance value of its Resistor-Capacitor Unit Change high pass corner frequency, C3, C4, R3, R4, U2 composition low-pass module 22 simultaneously change by changing the capacitance-resistance value of its Resistor-Capacitor Unit Become low pass corner frequency, switch K constitutes frequency dividing mode control module 3, the different gears of its switch are set can complete low pass, straight The conversion of the different allocation models such as logical, high pass.

Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not On the premise of departing from the invention design, various modifications and improvements can be made, these belong to protection model of the invention Enclose.

Claims

1. a kind of commercial electronic divides power amplifier, it is characterised in that including input control module（1）, Active crossover module （2）, frequency dividing mode control module（3）, amplification module（4）, output port（5）And power circuit（6）, the input control module （1）Receive external audio signal and be sent to Active crossover module（2）, the Active crossover module（2）Receive input control mould Block（1）The audio signal that sends simultaneously is sent to frequency dividing mode control module after carrying out high pass low pass scaling down processing（3）, described point Frequency mode control module（3）Receive Active crossover module（3）The audio signal that sends simultaneously is put by being sent to after Schema control Big module（4）, the amplification module（4）Receive frequency dividing mode control module（3）The audio model that sends and after being amplified It is sent to output port（5）, the output port（5）Receive amplification module（4）The audio signal that sends simultaneously is exported to outside Equipment, the power circuit（6）For above-mentioned each module provides power supply.

2. a kind of commercial electronic frequency dividing power amplifier according to claim 1, is further characterized in that, input control module （1）Including input port（11）And input control module（12）, input port（11）Receive external signal and be sent to input control Molding block（12）, input control module（12）Control mode include signal direct-passing mode, parallel input mode and bridge joint mode Three kinds of control models.

3. a kind of commercial electronic frequency dividing power amplifier according to claim 1, is further characterized in that, Active crossover module （2）Including high pass module（21）And low-pass module（22）, by dividing mode control module（3）Its working condition can be made to distinguish work Make in high pass mode, direct-passing mode, low pass mode Three models.