KR101040600B1 - Detachable module type amplifier, broadcasting system using the same and controlling method for the same - Google Patents

Abstract

PURPOSE: An amp device of detachable module type, broadcasting system using the same, a control method of an amp device of the detachable module type are provided to prevent a connection part which is a part that a power amp module and a module main body is connected by a rush current from being damaged. CONSTITUTION: At least one power amp module(230) is detached to an amplifier body. A connection part(220) is arranged between the amp main body and a power amp module. The connection part is electrically connected to the amp main body and the power amp modules. If a power relay unit passes a third setting time after switched on, a second time sequence of the power amp module is switched on the speaker relay. The second time sequence is switched off the speaker relay and switched off the power relay unit at the same time.

Description

Detachable module type Amplifier, Broadcasting system using the same and Controlling method for the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amplifier device, a broadcasting system using the amplifier device, and a control method of the amplifier device. In the amplifier device provided as a detachable module type, the connection part is damaged by a rush current when the power amplifier module is attached or detached. The present invention relates to a control method of a detachable module type amplifier device, a broadcast system and a detachable module type amplifier device using the same.

The purpose of broadcasting system of general public address system is largely classified into emergency broadcasting, guide broadcasting, and BGM (Background Music). In particular, in the emergency broadcast and guide broadcast, since the promptness and timeliness is a very important item, PA system should always be in a normal state in order to meet this requirement. As a result, it is very important to immediately restore the device to a normal state or to switch / exchange / replace it when the device of the public address system becomes abnormal or becomes defective.

A power amplifier, which is essentially used in the PA system, refers to a power amplifier for amplifying the output of a preamplifier, a control amplifier, a line amplifier, and the like to obtain power capable of driving a speaker. The power amplifier handles large power, drives the speaker as a low impedance load directly, and has a very low output impedance. In addition, an operation stop state or a failure state due to a circuit breakdown or a fuse out of the power amplifier causes an operation stop or malfunction of the entire broadcasting system.

When the amplifier device is provided as a detachable module type, it is possible to immediately exchange / replace with a normal power amplifier module in the event of a circuit breakdown or fuse out of the power amplifier module.

However, in the case of most electronic circuits, a rush current, which is a charging current of the capacitor, flows when the initial power is turned on. In the case of a large output power amplifier, since high power and high specifications are required, a large capacity capacitor is used, resulting in a very large rush current, and a large current peak current flows.

In particular, when the power amplifier module is inserted while the main power switch is turned on, a rush current is generated in the connection portion of the power amplifier module, and the rush current is the maximum connection portion connected to the power amplifier module. There is a problem that the connection is damaged by exceeding the rating.

In the conventional detachable module type amplifier device, when the power amplifier module is replaced, the user is usually guided to detach the power amplifier module after turning off the main power switch. Due to this, the power amplifier module is often detached in the state in which the main power switch is turned on, and thus, the connection part is damaged.

The problem to be solved by the present invention is that even when the main body and the power amplifier module is detached from the main power switch is on (ON), the connection portion that is the portion that is connected to the main body and the power amplifier module is not damaged by the rush current. The present invention provides a control method of a removable module type amplifier device, a broadcasting system and a removable module type amplifier device using the same.

In order to achieve the above-described problem, the present invention is disposed between the amplifier main body, at least one power amplifier module detachable from the amplifier main body, the amplifier main body and the power amplifier module to electrically connect the amplifier main body and the power amplifier module. Provided is a removable module type amplifier device including a connecting portion for connecting.

The power amplifier module outputs an audio signal desired by a user based on an input signal input from the outside, and the power amplifier module after a first predetermined time elapses from the time when the power amplifier module is coupled to the amplifier main body. It may include a first time sequence for supplying a supply voltage required for the power amplifier module to prevent the connection portion from being damaged by the rush current (Rush Current) when the power amplifier module is coupled.

The power amplifier module may be coupled to the amplifier main body in a state in which the main power switch provided in the power amplifier module is turned on. When the power amplifier module does not have a separate main power switch, the power The amplifier module may be directly coupled to the amplifier main body, and at the same time, the power amplifier module may be coupled to be turned on.

The power amplifier module may include a power input unit to which one or more power inputs of an AC power input and a DC power input are input, a spare power input unit connected to an external power supply unit, and receiving a standby voltage, and a flow of the AC power input. The apparatus may further include a power relay unit having at least one of an AC power relay for controlling and a DC power relay for controlling the flow of the DC power input, and a power relay driving unit for driving the power relay unit.

The preliminary power input unit may control the first time sequence, the first time sequence controls the power relay driver, and the power relay driver controls the power relay unit.

The power amplifier module may further include a speaker relay for controlling the flow of an audio signal output from the amplifier circuit unit, a speaker relay driver for driving the speaker relay, and a second time sequence for controlling the speaker relay. It may include.

In addition, the power amplifier module inputs a separate protection signal to the second time sequence to turn off the speaker relay so that an abnormal output is not output to the speaker device when an abnormality is found in the amplifier main body or the power amplifier module. The apparatus may further include a protect signal input unit.

The power amplifier module may include: an AC power supply unit receiving the AC power input and outputting a first power when the AC power input and the DC power input are simultaneously input; and the first power output from the AC power supply unit and the The apparatus may further include a power mixing unit configured to mix a DC power input to output a driving voltage for driving the amplifier circuit unit.

In addition, as another embodiment of the power amplifier module, the power amplifier module may receive an AC power input and output the first power when the AC power input and the DC power input are simultaneously input, and the DC A DC power supply for receiving a power input and outputting a second power, and outputting a driving voltage for driving the amplifier circuit unit by mixing the first power output from the AC power supply and the second power output from the DC power supply; It may further include a power mixing unit.

According to another embodiment of the present invention, the present invention is disposed between the amplifier main body, at least one power amplifier module detachable from the amplifier main body, and the amplifier main body and the power amplifier module to provide the amplifier main body and the power amplifier module. A speaker having a detachable module type amplifier device having an electrical connection portion, an audio signal input device connected to an input terminal of the detachable module type amplifier device, and a speaker having one or more speakers connected to an output end of the detachable module type amplifier device. Provided is a broadcast system including a device.

Similarly, the power amplifier module outputs an audio signal desired by a user based on an input signal input from the outside, and the power after a first set time elapses from the time when the power amplifier module is coupled to the amplifier main body. It may include a first time sequence for supplying the supply voltage required for the amplifier module to the power amplifier module to prevent the connection portion from being damaged by the rush current (Rush Current) when the power amplifier module is coupled.

According to another embodiment of the present invention, the present invention comprises the steps of inserting the power amplifier module into the amplifier body, the step of inserting the power amplifier module at the same time the standby power input unit is provided with a first state of the reserve power, the power amplifier module In order to prevent the connection part, which is a part of the power amplifier module and the amplifier main body, from being damaged by the rush current during the coupling, the spare power input part is provided with the spare power first state. After the first set time has elapsed, the first time sequence outputs the first output, and the power relay unit is turned on at the same time that the first output is output, so that the supply voltage required for the power amplifier module is supplied to the power amplifier. It provides a control method of a removable module type amplifier device comprising the step of being supplied to the module.

Similarly, the step of inserting the power amplifier module into the amplifier main body may be coupled to the power amplifier module and the power amplifier module while the main power switch provided in the power amplifier module is turned on (ON), the power amplifier module When there is no separate main power switch, the power amplifier module may be directly coupled to the amplifier main body, and the power amplifier module may be coupled to be turned on.

The control method of the detachable module type amplifier device may further include outputting a third output by a second time sequence after a third set time elapses after the power relay unit is turned on. The output may further include a step in which the speaker relay is turned on.

The method of controlling the detachable module type amplifier device may include: separating the power amplifier module from the amplifier main body; separating the power amplifier module; And outputting a second output by the first time sequence simultaneously with the reserve power input unit entering the reserve power second state, and turning off the power relay unit simultaneously with the output of the second output. can do.

The control method of the detachable module type amplifier device may further include outputting a fourth output by a second time sequence at the same time that the second output is output, and simultaneously turning off the speaker relay when the fourth output is output. It may further comprise the step.

In addition, the control method of the detachable module type amplifier device is separate from the second time sequence to turn off the speaker relay so that an abnormal output is not output to the speaker when an abnormality is found in the amplifier main body or the power amplifier module. The method may further include inputting a protect signal.

When explaining the effect of the present invention.

First, when the power amplifier module is coupled to the amplifier main body in a state in which the main power switch provided in the power amplifier module is turned on or when the power amplifier module does not have a separate main power switch, When the power amplifier module is directly coupled to the amplifier main body and coupled to the amplifier main body, the first time sequence is passed after the first set time T1 has elapsed from the time when the power amplifier module is coupled to the amplifier main body. By controlling the power relay unit so that the supply voltage required for the power amplifier module is supplied to the power amplifier module is a part which is coupled to the power amplifier module and the amplifier body by the rush current (Rush Current) when the power amplifier module is coupled There is an advantage that can prevent the connection from being damaged.

Second, when the power amplifier module is coupled to the amplifier main body in the state in which the main power switch provided in the power amplifier module is turned on or when the power amplifier module does not have a separate main power switch, the power amplifier module is When the power amplifier module is directly coupled to the amplifier main body and coupled to the amplifier, the second time sequence controls the speaker relay so that the third set time has elapsed since the driving voltage was supplied to the amplifier circuit unit. Next, the output of the amplifier circuit portion is transmitted to the speaker device, thereby preventing the abnormal output due to the transient response from the amplifier device to be output to the speaker device.

Third, when the standby power input unit is changed from the upper level (H) to the lower level (L) or when the main power switch is switched from the ON (OFF) state to the OFF (OFF) state to the output of the first time sequence It is advantageous to prevent the abnormal output from the amplifier device from being transmitted to the speaker device by controlling the two time sequences to turn off the speaker relay.

Fourth, when an abnormality is found in the amplifier main body or the power amplifier module, a separate protection signal is input to the second time sequence to turn off the speaker relay so that the abnormal output of the amplifier device is not output to the speaker device. There is an advantage.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the main parts of a broadcasting system equipped with a removable module type amplifier device according to the present invention.
2 is a circuit diagram showing a circuit embedded in a power amplifier module according to the present invention.
3 is a circuit diagram showing another embodiment of a circuit embedded in a power amplifier module according to the present invention.
4 is an operation flowchart of the circuit diagram of FIG. 2 when the power amplifier module is inserted into the amplifier main body with the main power switch turned on.
5 is a flowchart illustrating the operation of the circuit diagram of FIG. 2 when the power amplifier module is disconnected from the amplifier main body with the main power switch turned on.
6 is a flowchart illustrating another embodiment of the operation flow in the circuit diagram provided in the power amplifier module when the power amplifier module is disconnected from the amplifier main body when the main power switch is turned on.

Hereinafter, with reference to the accompanying drawings, a removable module type amplifier device according to an embodiment of the present invention, a broadcast system using the same and a control method of the removable module type amplifier device will be described in detail.

Referring to FIG. 1, a broadcasting system according to the present invention includes an audio signal input connected to an input terminal of a detachable module type amplifier device 200 in which the power amplifier module 230 is detachable, and the detachable module type amplifier device 200. Apparatus 100, and a speaker device 300 having one or more speakers connected to the output terminal of the removable module type amplifier device 200. Of course, the broadcast system according to the present invention may include not only a broadcast control device but also additional devices additionally required according to a broadcast purpose. In detail, the audio signal input device 100 may include a microphone 101, a CD player 102, a tuner device 106, and the like for transmitting an audio signal to the amplifier device 200.

In addition, the speaker device 300 may include a first speaker 301, a second speaker 302, and an N-th speaker 306 installed in each of a plurality of divided broadcast zones.

In addition, the amplifier device 200 is disposed between the amplifier body 210, at least one power amplifier module 230 detachable from the amplifier body 210, between the amplifier body 210 and the power amplifier module 230. And a connection part 220 for electrically connecting the amplifier main body 210 and the power amplifier module 230.

The power amplifier module 230 may include a first power amplifier module 2300 and a second power amplifier module corresponding to the first speaker 301, the second speaker 302, and the N-th speaker 306. 2400, an N-th power amplifier module 2600.

In addition, the connector 220 may include a first connector 221 and a second connector 222 corresponding to the first power amplifier module 2300, the second power amplifier module 2400, and the Nth power amplifier module 2600. And an Nth connection part 226. Here, the connection unit 220 may be specifically implemented as a connector connecting the amplifier main body 210 and the power amplifier module 230, the amplifier main body 210 and the power amplifier module 230 is The site to be connected is collectively used.

Referring to FIG. 2, an embodiment of a circuit provided in each power amplifier module according to the present invention will be described. Hereinafter, a circuit provided in the first power amplifier module 2300 will be described as an example.

The first power amplifier module 2300 may include a main power switch 2317, a power input unit 2311 for inputting external power, a preliminary power input unit 2313 connected with an external power supply unit, and a standby voltage applied thereto, and audio from outside. An input terminal unit 2312 for inputting an input signal, an amplifier circuit unit 2330 for outputting an audio output signal desired by a user based on the input audio input signal, and an audio output signal output from the amplifier circuit unit 2330 is connected to the outside And an output terminal portion 2314.

The main power switch 2317 is provided to turn on / off the operation of the first power amplifier module 2300. As a result, each power amplifier module is provided with a respective main power switch. Of course, the main power switch 2317 may be provided in the amplifier main body 210. In addition, a separate total power switch for turning on / off the entire operation of the amplifier device may be provided in the amplifier body 210.

The power input unit 2311 corresponds to a terminal through which power is input to the power amplifier module 230. The power input unit 2311 includes an AC power input unit 2311a to which an AC power input is input, and a DC power input unit 2311b to which a DC power input is input.

The first power amplifier module 2300 may include an AC power supply 2315 receiving the AC power input and outputting a first power when the AC power input and the DC power input are simultaneously input, and the AC power supply unit ( And a power mixing unit 2316 for outputting a driving voltage for driving the amplifier circuit unit 2330 by mixing the first power and the DC power input output from 2315.

The AC power supply unit 2315 receives the AC voltage input from the AC power input unit 2311a to output the first power in the form of DC voltage, and the power mixing unit 2316 outputs from the AC power supply unit 2315. The first power and the DC power input input through the DC power input unit 2311b are mixed to apply a driving voltage for driving the amplifier circuit unit 2330 to the amplifier circuit unit 2330.

The first power amplifier module 2300 may further include an AC power relay 2321 disposed between the AC power input unit 2311a and the AC power supply unit 2315 to control the flow of the AC power input. do. In addition, the first power amplifier module 2300 is disposed between the DC power input unit 2311b and the power mixing unit 2316, and further includes a DC power relay 2323 for controlling the flow of the DC power input. Include.

Of course, the present invention is not limited to the above-described embodiment, and the AC power input unit or the DC power input unit may be provided separately, and the flow of the AC power relay and the DC power input for controlling the flow of the AC power input may be applied. DC power relays for control may also be provided separately.

In addition, the present invention is not limited to the above-described embodiment, and the power relay unit is a semiconductor, for example, a bipolar junction transistor (BJT), a metal-oxide semiconductor field effect transistor (MOST), a sillicon controlled rectifier (SCR), It may also be implemented by TRIAC (Triode AC Switch).

In addition, as shown in Figure 3, referring to a circuit diagram showing another embodiment of a circuit built in the power amplifier module according to the present invention, the first power amplifier module 2300, DC power supply unit 2318 is to be additionally installed Can be.

Specifically, in the first power amplifier module 2300 according to the present embodiment, when the AC power input and the DC power input are simultaneously input, an AC power supply unit 2315 receives the AC power input and outputs the first power, and the A DC power supply 2318 for receiving a DC power input and outputting a second power is provided.

The DC power supply unit 2318 is disposed between the DC power relay 2323 and the power mixing unit 2316 to receive the DC power input input from the DC power input unit 2311b to output the second power. The power mixer 2316 may be configured to drive the amplifier circuit unit 2330 by mixing the first power output from the AC power supply 2315 and the second power output from the DC power supply 2318. The driving voltage is output.

In addition, the DC power relay 2323 is disposed between the DC power input unit 2311b and the DC power supply unit 2318 to control the flow of the DC power input.

Meanwhile, the first power amplifier module 2300 includes an AC power relay driver 2351 and a DC power relay driver 2353 which individually control the AC power relay 2321 and the DC power relay 2323, respectively. do.

In addition, the first power amplifier module 2300 controls the AC power relay driver 2351 and the DC power relay driver 2353 to control the AC power relay 2321 and the DC power relay 2323. First time sequence 2341 is included. As a result, the preliminary power input unit 2313 controls the first time sequence 2341, and the first time sequence 2341 controls the AC power relay driver 2351 and the DC power relay driver 2353. In addition, the AC power relay driver 2351 and the DC power relay driver 2353 control the AC power relay 2321 and the DC power relay 2323.

In particular, the first time sequence 2341 is set from a time point at which the first power amplifier module 2300 is coupled to the amplifier main body 210 while the main power switch 2317 is turned on. After the time T1 has elapsed, a rush current is supplied when the supply voltage required for the first power amplifier module 2300 is supplied to the first power amplifier module 2300 to couple the first power amplifier module 2300. ) To prevent damage to the connection portion. A process in which the first power amplifier module 2300 is controlled by the first time sequence 2341 will be described later with reference to FIGS. 4 to 6.

Of course, the present invention is not limited to the above-described embodiment, and there is no separate main power switch in the first power amplifier module 2300, and the first power amplifier module 2300 is directly connected to the amplifier main body 210. At the same time, the first power amplifier module 2300 may be turned on and coupled.

In addition, the first power amplifier module 2300 may include a speaker relay 2325 for controlling the flow of an audio output signal output from the amplifier circuit unit 2330, and a speaker relay driver for driving the speaker relay 2325. 2355 and a second time sequence 2342 for controlling the speaker relay 2325. Here, the second time sequence 2342 receives the output signal of the first time sequence 2341 to control the speaker relay driver 2355.

In addition, the speaker relay so that the abnormal output is not output to the speaker device 300 when an abnormality is found in the amplifier main body 210 or the first power amplifier module 2300. A protection signal input unit 2360 is further included to input a separate protection signal to the second time sequence 2342 to turn off 2325.

1, 2 and 4, the control flow when the first power amplifier module is inserted when the main power switch is turned on (ON) as follows.

First, in the initial state, the main power switch 2317 is ON, and the AC power relay 2321, the DC power relay 2323, and the speaker relay 2325 are all OFF (S1). , S3).

In this case, when the user inserts the first power amplifier module 2300 into the amplifier main body 210 while the main power switch 2317 is turned on, the reserve power input unit 2313 has a higher level value ( H) is provided with a first power supply state (S10, S20).

Next, the first time sequence 2341 determines whether a first set time T1 has elapsed since the preliminary power first state is provided to the reserve power input unit 2313, and the first set time T1 is determined. ), The first time sequence 2341 outputs a first output which is the upper level value H of the first time sequence (S35 and S50).

Here, the first set time T1 is a time until the first time sequence 2341 outputs a first output after the first power amplifier module 2300 is inserted into the amplifier main body 210. Means.

As a result, even when the first power amplifier module 2300 is inserted into the amplifier main body 210 while the main power switch 2317 is turned on, the coupling of the first power amplifier module 2300 is not performed. After the completion of the first set time, the first power amplifier module 2300 is supplied with a supply voltage required for the first power amplifier module 2300, thereby coupling the first power amplifier module 2300. The first connection portion 221 is prevented from being damaged by the rush current.

Therefore, even when the first power amplifier module 2300 is coupled while the main power switch 2317 is turned on, the first connection portion 221 to which the first power amplifier module 2300 is coupled is damaged. This is avoided. In addition, the static electricity generated when the first power amplifier module 2300 is coupled may not affect the amplifier circuit unit 2330 at all.

Next, the AC power relay 2321 and the DC power relay 2323 are turned on at the same time as the first output is output, and is output from the AC power supply unit 2315 at the power mixing unit 2316. The first power and the DC power input are mixed and a driving voltage is input to the amplifier circuit unit 2330 (S70).

Of course, as shown in FIG. 3, when the DC power supply unit 2318 is provided, when the AC power relay 2321 and the DC power relay 2323 are ON, the power mixing unit 2316 may be used. The first power output from the AC power supply 2315 and the second power output from the DC power supply 2318 are mixed to input a driving voltage to the amplifier circuit unit 2330.

Next, the second time sequence 2342 determines whether the third set time T3 has elapsed since the first output is output, and if the third set time T3 has been reached, the second time sequence 2234. The sequence 2342 outputs a third output that is a high level value H (S75 and S80).

Here, the third set time T3 is set to be greater than the transient response time when an abnormal output occurs when initial power is supplied to the first power amplifier module 2300. When the third set time T3 is set to be larger than the transient response time while the main power switch 2317 is turned on, an abnormal output of the first power amplifier module 2300 due to the transient response may occur. The output to the speaker device can be prevented.

Next, the speaker relay 2325 is turned on while the third output is output.

As a result, after the time when the sum of the first set time and the third set time, that is, the time T1 + T3 has elapsed from the time when the first power amplifier module 2300 is coupled to the amplifier main body 210, The speaker relay 2325 is turned on to transmit the output of the amplifier device 200 to the speaker device 300.

Referring to FIGS. 1, 2, and 5, a control flow when the first power amplifier module 2300 is separated while the main power switch 2317 is turned on will be described below.

First, before the first power amplifier module 2300 is separated, the main power switch 2317 is turned on, the AC power relay 2321, the DC power relay 2323, and the speaker relay ( 2325 is in an on state (S101, S103).

In this case, when the user separates the first power amplifier module 2300 from the amplifier main body 210 while the main power switch 2317 is turned on, the reserve power input unit 2313 has a low level value ( L) is a second state of the standby power supply (S110, S130).

Next, the first time sequence 2341 causes the preliminary power input unit 2313 to be in the second state of the preliminary power and output the second output having the low level value L at the same time. It becomes (S150).

Next, the AC power relay 2321 and the DC power relay 2323 are turned off at the same time as the second output is output (S170). In addition, while the first time sequence 2341 outputs a second output, the second time sequence 2342 outputs a fourth output having a lower level value L (S180).

Next, the speaker relay 2325 is turned off at the same time as the second time sequence 2342 outputs the fourth output (S190).

As a result, when the first power amplifier module 2300 is disconnected from the amplifier main body 210 while the main power switch 2317 is turned on, the AC power relay 2321 and the DC power relay The 2323 and the speaker relay 2325 are both turned OFF at substantially the same moment. That is, the output of the first time sequence 2341 is controlled to turn off the speaker relay 2325 by controlling the second time sequence 2342 so that the abnormal output from the amplifier device 200 is caused by the speaker device 300. It will not be delivered to.

Of course, the present invention is not limited to the above-described embodiment, and when the abnormality is found in the amplifier main body 210 or the first power amplifier module 2300, the speaker relay 2325 does not output the abnormal output to the speaker device. ), A separate protect signal may be input to the second time sequence 2342.

Referring to FIGS. 1, 2 and 6, another embodiment of the control flow when the first power amplifier module 2300 is detached when the main power switch 2317 is turned on will be described below. Is the same as

First, before the first power amplifier module 2300 is separated, the main power switch 2317 is turned on, the AC power relay 2321, the DC power relay 2323, and the speaker relay ( 2325 is in an on state (S201, S203).

In this case, when the user separates the first power amplifier module 2300 from the amplifier main body 210 while the main power switch 2317 is turned on, the reserve power input unit 2313 has a lower level value. A second power supply state of (L) is entered (S210, S230).

Next, the first time sequence 2341 determines whether an elapsed time is greater than 0 and less than a second set time T2 since the preliminary power input unit becomes the preliminary power second state, and determines the condition. If so, the first time sequence 2341 outputs a second output that is a lower level value (L).

delete

As a result, when the first power amplifier module 2300 is detached and immediately reinserted, both the AC power relay 2321 and the DC power relay 2323 are turned off within the second set time T2. ), And then ON again after the first set time T1. Therefore, even when the power amplifier module 230 is disconnected while the main power switch 2317 is turned on, and the power amplifier module 230 is immediately inserted again, the first connection part (2) is rushed. 221 is not damaged.

In addition, when the first power amplifier module 2300 is removed and the first power amplifier module 2300 is immediately inserted again, since the discharge of the voltage charged in the actual power capacitor does not occur much, the rush current Is small so that the first connection portion 221 is hardly damaged.

Next, the second power is output from the first time sequence 2341 and the AC power relay 2321 and the DC power relay 2323 are turned off (S270). In addition, while the first time sequence 2341 outputs the second output, the second time sequence 2342 outputs the fourth output having the lower level value L (S280).

Next, the speaker relay 2325 is off (OFF) at the same time as the second time sequence 2342 outputs the fourth output (S290).

In addition, the second time sequence 2342 may be controlled by a protect signal input unit 2360 embedded in the first power amplifier module 2300. Specifically, when the protect signal input unit 2360 detects an abnormal signal in the amplifier main body 210 or the first power amplifier module 2300, the protect signal input unit 2360 may provide a protect signal for turning off the speaker relay 2325. 2 is passed to a time sequence (2342).

Then, the second time sequence 2342 outputs a fourth output having a lower level value L, and the speaker relay 2325 is turned off at the same time as the fourth output is output. As a result, when an abnormality is found in the amplifier main body 210 or the first power amplifier module 2300, the speaker relay 2325 is turned off so that an abnormal output is not output to the speaker device 300.

The present invention is not limited to the above-described embodiment, and is applied to the case where the main power switch is turned on / off while the power amplifier module is coupled to the amplifier main body.

Specifically, when the preliminary power input unit 2313 is in a state of a high level value H, when the main power switch 2317 is changed from an OFF state to an ON state, the first time sequence 2234 outputs a first output of higher level value H after the first set time T1. Thereafter, the control flows S70, S75, S80, and S90 as shown in FIG. Detailed description thereof is omitted since it is substantially the same as the description related to FIG. 4.

In addition, when the preliminary power input unit 2313 is in a state of a high level value H, when the main power switch 2317 is changed from an on state to an off state, the first time sequence may be used. 2234 immediately outputs a second output that is a lower level value (L). Subsequently, the control flows S170, S180, and S190 as shown in FIG. Detailed description thereof is omitted because it is substantially the same as the description related to FIG. 5.

In addition, when the preliminary power input unit 2313 is in a state of a high level value H, when the main power switch 2317 is changed from an on state to an off state, the first time The sequence 2341 outputs a second output that is a lower level value L within a time range greater than zero and less than the second set time T2. After that, the flows (S270, S280, S290) as shown in FIG. Detailed description thereof is omitted since it is substantially the same as the description related to FIG. 6.

As a result, the first power amplifier module 2300 is inserted into or separated from the amplifier main body 210 in the state where the main power switch 2317 is turned on, or the first power amplifier module 2300 is The first connection part 221 connecting the amplifier main body 210 and the first power amplifier module 2300 even when the main power switch 2317 is turned on / off in the state of being inserted into the amplifier main body 210. Is not damaged by the rush current. Of course, the present invention is not limited to the above-described embodiment, and there is no separate main power switch in the first power amplifier module 2300, and the first power amplifier module 2300 is directly connected to the amplifier main body 210. The control flow described above may also be applied to the case where the first power amplifier module 2300 is coupled to the same at the same time. In addition, the second power amplifier module 2400 and the Nth power amplifier module 2600 are also controlled in the same manner as the first power amplifier module 2300.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various modifications may be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. It is possible and such variations are within the scope of the present invention.

100: audio signal input device 200: amplifier device
210: amplifier body 220: connection portion
230: power amplifier module 300: speaker device
2300: first power amplifier module 2311: power input unit
2313: spare power input unit 2317: main power switch
2321: AC power relay 2323: DC power relay
2325: speaker relay 2330: amplifier circuit
2341: first time sequence 2342: second time sequence
2351: AC power relay drive unit 2353: DC power relay drive unit
2355: speaker relay drive unit 2360: protect signal input unit

Claims (12)

Amplifier body;
At least one power amplifier module detachable from the amplifier main body;
It is disposed between the amplifier main body and the power amplifier module includes a connecting portion for electrically connecting the amplifier body and the power amplifier module,
The power amplifier module includes an amplifier circuit unit for outputting an audio signal desired by the user based on an input signal input from the outside;
The power amplifier module is coupled to the amplifier main body and simultaneously connected to an external power supply unit to receive a first power reserve state, and the power amplifier module is separated from the amplifier main body and simultaneously receives a second power supply second state. A spare power input unit,
A power input unit to which at least one power input of an AC power input and a DC power input is input;
A power relay unit for controlling a flow of the power input to supply or cut off a supply voltage required for the power amplifier module;
A power relay driving unit for driving the power relay unit;
A speaker relay for controlling the flow of the audio signal output from the amplifier circuit unit;
In order to prevent the connection part from being damaged by the rush current when the power amplifier module is coupled, the power relay driving unit is controlled after a first set time elapses from the time when the power amplifier module is coupled to the amplifier main body. A first time sequence for turning on the power relay unit and turning off the power relay unit at the same time as the power amplifier module is separated from the amplifier main body;
And a second time sequence for turning on the speaker relay when the third set time has elapsed since the power relay is turned on, and turning off the speaker relay at the same time as the power relay is turned off.
The third setting time is a removable module type amplifier device, characterized in that it is set larger than the transient response time from which the abnormal output occurs after the power relay is turned on. The method of claim 1,
The power input unit includes at least one of an AC power input unit to which the AC power input is input and a DC power input unit to which the DC power input is input, and the power relay unit is an AC power relay for controlling the flow of the AC power input. And a DC power relay for controlling the flow of the DC power input. delete The method of claim 1,
And a protect signal input unit for inputting a separate protect signal to the second time sequence to turn off the speaker relay so that an abnormal output is not output to the speaker when an abnormality is found in the amplifier main body or the power amplifier module. Removable module type amplifier unit. The method of claim 1,
An AC power supply receiving the AC power input and outputting a first power when the AC power input and the DC power input are simultaneously input to the power input unit; and the first power and the DC power input output from the AC power supply. Removable module type amplifier device further comprising a power mixing unit for outputting a driving voltage for driving the amplifier circuit unit by mixing. The method of claim 1,
An AC power supply receiving the AC power input and outputting a first power when the AC power input and the DC power input are simultaneously input to the power input unit, a DC power supply receiving the DC power input and outputting a second power; And a power mixing unit configured to mix the first power output from the AC power supply unit and the second power output from the DC power supply unit to output a driving voltage for driving the amplifier circuit unit. An amplifier device of the removable module type according to any one of claims 1, 2, 4 and 6;
An audio signal input device connected to an input terminal of the detachable module type amplifier device; And,
And a speaker device having one or more speakers connected to an output terminal of the detachable module type amplifier device. Inserting the power amplifier module into the amplifier body;
Receiving a preliminary power first state at the same time as the insertion of the power amplifier module, a preliminary power input unit connected to an external power supply unit;
When the power amplifier module is coupled, the reserve power input unit provides the reserve power first state in order to prevent a connection portion, which is a portion where the power amplifier module and the amplifier main body are coupled by rush current, from being damaged. Outputting a first output by the first time sequence after the first set time has elapsed since the reception;
A step in which a power relay unit is turned on at the same time as the first output is output, so that a supply voltage required for the power amplifier module is supplied to the power amplifier module;
Outputting, by a second time sequence, a third output after a third set time has elapsed since the power relay unit is turned on;
Turning on a speaker relay at the same time the third output is output;
Separating the power amplifier module from the amplifier main body;
The power amplifier module being separated and at the same time the reserve power input unit is in a reserve power second state;
Outputting a second output by the first time sequence while the reserve power input unit enters the reserve power second state;
Turning off the power relay unit while the second output is output;
Outputting a fourth output by the second time sequence simultaneously with the output of the second output; And,
At the same time that the fourth output is output, the speaker relay is turned off.
The third setting time is a control method of a removable module type amplifier device, characterized in that it is set larger than the transient response time that the abnormal output occurs after the power relay is turned on. delete delete delete The method of claim 8,
Removable module type further comprising the step of inputting a separate protection signal to the second time sequence in order to turn off the speaker relay so that the abnormal output is not output to the speaker when an error is found in the amplifier body or the power amplifier module How to control the amplifier device.

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