KR100944688B1 - Audio mixer equipment - Google Patents

Abstract

PURPOSE: An audio mixer apparatus is provided to perform a remote control and remote monitoring by using internet connections. CONSTITUTION: An audio input control(11) comprises a plurality of input channels which receive an acoustic signal. The audio output device(12) comprises a plurality of output channels outputting the acoustic signal. A matrix unit(13) selectively interlinks the channel of the output unit and an audio input control. An operation unit(14) receives an operation instruction signal of a user. A transceiver(15) transmits and receives data. A multiple channel audio mixer comprises a controller(17). The controller controls the matrix unit. A communications unit(25) transmits and receives data to/ from the audio mixer. A display unit(21) displays a set signal and an acoustic signal I/O of the audio mixer.

Description

Audio Mixer Equipment

The present invention relates to an audio mixer, and more particularly, to directly convert a volume, a tone (eg, treble, bass), etc. for each channel of a mixer having a plurality of channels through which sound is input and output. Not only can it be set in the same way, it can be set digitally for each channel simply by watching the display screen of the controller (e.g. PC), and the broadcasting status of each channel can be monitored through the display screen of the controller. Priority broadcasts and group broadcasts can be easily controlled, and the mixer is equipped with an uninterruptible power supply to prevent the mixer from operating due to a power outage so that evacuation announcements are not sent. An audio mixer device.

An audio mixer is a sound device that receives various sound signals from a performance hall or a school, which is a large and small meeting place, and mixes the input sound signals to a desired place.

The conventional audio mixer includes an input unit having a plurality of input channels for receiving sound signals, an output unit having a plurality of output channels for outputting the input sound signals to a speaker, and connecting the input channels and output channels in a matrix form. A matrix unit for outputting the input sound signal to the required speaker, and an input unit for receiving a user's operation command signal, and a control unit for controlling the matrix unit.

In the conventional audio mixer, the user controls the setting (setting) of the volume, the tone, and the like of the sound signal output to each channel through an analog operation through a manual operation in which the user turns or raises or lowers the switch. In addition, the matrix connection between the input channel and the output channel was also set by the user through the control panel or by downloading a program to the controller. In such a conventional audio mixer, operations such as volume, tone, matrix, and the like must be set for each channel, and it is difficult to set it cumbersomely and precisely by analog setting. In addition, it is difficult to easily determine which input channel is input to which output channel, and the setting state of the output sound signal is difficult. That is, there is a problem that monitoring of the acoustic broadcast is difficult.

In the event of a fire, emergency broadcasts must be output to block the existing sound signal, to inform the occurrence of fire, and to guide the evacuation route. That is, audio mixers in large facilities should be equipped with priority broadcasting. In addition, priority broadcasting is intended to prevent casualties and property damage, so that no transmission is allowed. That is, even when the power supply is cut off, emergency evacuation broadcasts notifying the occurrence of a fire should be transmitted.

However, since the conventional audio mixer is driven by commercial power only, there is a high risk of failing to transmit emergency evacuation broadcasts in the event of a fire that has a high risk of power failure. Therefore, it is necessary for the audio mixer to have an uninterruptible power supply unit capable of supplying power even in the case of power failure.

The present invention has been made in view of the above problems and necessities, and various settings of the audio mixer (channel volume, tone, input channel and output channel matrix setting, etc.) can be analogized through the operation unit of the audio mixer. In addition, the controller having a setting unit and a display unit allows the user to easily and precisely set the digitally while watching the screen, and monitor the broadcasting state of the sound signals input and output through the controller in real time. It is an object of the present invention to provide an audio mixer which is equipped with an internet connection and which can manage and monitor the audio mixer remotely.

It is also an object of the present invention to provide an audio mixer device having an uninterruptible power supply prevention means that prevents the danger of emergency evacuation broadcast by transmitting both commercial power and battery power to the audio mixer so that it can be driven for a certain period of time during a power failure. do.

The audio mixer device of the present invention for achieving the above object is

An audio input unit having a plurality of input channels through which sound signals are input;

An audio output unit including a plurality of output channels through which sound signals input to the audio input unit are output;

A matrix unit for selecting and connecting channels of the audio input unit and the output unit;

An operation unit for receiving a user's operation command signal;

A transceiver for transmitting and receiving data,

A multi-channel audio mixer including a controller for processing data received by the transceiver and controlling the matrix unit according to a predetermined program or a command signal of the operation unit;

A communication unit for transmitting and receiving data with the transceiver of the audio mixer;

A setting unit which receives a user audio mixer setting signal (eg, volume, treble, bass, etc. of an output sound signal);

It comprises a display unit for displaying the setting signal of the setting unit and the sound signal input and output status of the input unit and the output unit of the audio mixer,

A controller for setting and monitoring a broadcasting state (input and output states of sound signals) of the audio mixer;

With battery,

A converter unit for converting and outputting commercial AC power to DC power;

A charging unit for charging the battery with an output power of the converter unit;

It includes a power selection unit for supplying the output power of the converter unit in normal times, the power supply of the battery in case of power failure,

And a power supply unit built in the audio mixer to supply an uninterruptible driving power to the audio mixer.

And the control unit of the audio mixer

A matrix control unit controlling a connection relationship between an input channel of the audio input unit and an output channel of the audio output unit;

A priority control unit which determines whether the input sound signal of the audio input unit is an emergency broadcast and transmits the priority signal to the audio output unit;

The controller is characterized in that the Internet connection is provided to enable remote control after the authentication process by connecting through the Internet network

Of the power supply means

The power selector

A first transistor which is turned on / off in accordance with the presence or absence of power from the converter and allows power to be input from the converter or battery according to an on / off state;

And a regulator unit for converting power input from the battery into power of a size required for the audio mixer and outputting the same.

The converter section

A filter unit for removing noise of an input AC power supply,

An expansion unit for smoothing the output power of the filter unit;

A first transformer for transforming the output power of the smoothing unit;

A direct current unit for smoothing and directing the output power of the first transformer;

It comprises a second transistor for controlling the magnitude of the secondary output power by switching the power input to the primary side of the first transformer,

The charging unit

A charging current applying unit for processing a power input from the converter to apply a charging current to the battery;

A third transistor supplying or blocking a charging current of the charging current applying unit to a battery;

A detector for detecting a charging state of the battery;

And a first controller configured to receive a signal from the sensing unit and control on / off of the transistor.

The converter section

A fuse (F1) for blocking an overcurrent of an input commercial AC power supply,

The filter unit is composed of a capacitor (C1, C2) and inductor (L2) connected in parallel with each other,

The smoothing part consisting of bridge diodes (D2, D3, D4, D5) and capacitors (C3, C4) connected in parallel with each other,

A second control unit U1 for controlling switching of the second transistor Q1;

Driving power supply resistors R2 and R4 for supplying initial driving power to the second control unit;

A second transformer T2 magnetically coupled to the first transformer T1,

A first driving power supply comprising a diode D8, a resistor R8, and capacitors C11 and C12, and smoothing the induced power of the second transformer to supply driving power to the second control unit;

A resistor (R10) for sensing a voltage induced in the second transformer and transmitting the magnitude of the output power of the first transformer to the second controller;

Resistors R9 and R11 and a capacitor C7 connected to the gate terminal of the second transistor to prevent an overcurrent from flowing through the second transistor;

It includes the direct current unit consisting of a diode (D6, D7), an inductor (L1), a capacitor (C5, C6), a resistor (R6) connected to the secondary side of the first transformer,

The charging unit

It comprises a fourth transistor (Q4), regulator (U2), resistors (R19, R20, R21, R26), capacitor (C16) to convert the power input from the converter unit to drive to the first control unit (U3) A second driving power supply unit for supplying power;

The third control unit U4 for keeping the resistors R14, R15, R23, and R24 outputting the charging current and the output charging current of the resistors R14, R15, R23, and R24 constant (that is, constant current). And the charging current applying unit comprising a,

Resistors (R16 and R25) for sensing the magnitude of the output charging current of the charging current applying unit and transmitting the magnitude of the output charging current to the first control unit;

A fifth transistor Q2 connected to the third control unit and blocking power input from the converter to prevent overcharging of the battery BAT;

The sensing unit is composed of a charge detection resistor (R37, R40) for detecting the state of charge of the battery,

Is connected to the first control unit and comprises an LED (LD1) for indicating the state of charge of the battery,

The first controller transmits the charging current sensed by the resistors R16 and R25 to the third controller.

The power selector

A resistor (R17) for supplying power input from the converter to the base terminal of the first transistor (Q6) to turn on / off the first transistor;

An inductor L3 for boosting the voltage input from the battery, a diode D10, resistors R22, R28, and capacitors C15, C18 are rectified to supply the load to the load side of the inductor L3. And a regulator unit including a rectifier unit and a fourth control unit U4 for controlling the step-up voltage of the inductor L3.

Audio mixer device according to the present invention having the configuration as described above

Various settings of the audio mixer can be done easily and precisely, not only analog in the audio mixer itself, but also digitally in the controller, and the broadcast status of the audio mixer can be monitored through the controller. It can be controlled and monitored, which enhances user convenience.

In addition, an uninterruptible power supply means is built in the audio mixer so that it can be driven for a predetermined time even in the event of a power outage. This invention is very useful for industrial development.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of an apparatus for an audio mixer 10 according to the present invention. As shown in the drawing, the apparatus for an audio mixer 10 of the present invention is roughly divided into an audio mixer 10, a controller 20, and It includes an uninterruptible power supply built in the audio mixer 10.

The audio mixer 10 includes an audio input unit 11, an output unit 13, a matrix unit 12, an operation unit 14, a control unit 17, a memory 16, and a transceiver unit 15.

The audio input unit 11 includes a plurality of input channels to receive one or a plurality of sound signals from an external sound device such as a cassette recorder, MP3, microphone, or the like.

Although not shown in the drawing, the audio input unit 11 includes a filter for removing noise of the input sound signal, a converter for converting the input sound signal into a signal that can be processed by the audio mixer 10, and an input channel. Volume resistance is provided to adjust the volume size of the sound signals input from within a certain range.

The audio output unit 13 includes a plurality of output channels to transmit sound signals input from the audio input unit 11 to a plurality of speakers.

Although not shown in the drawing, the audio output unit 13 includes a mixer for mixing one or more sound signals input from the input unit 11, and amplifies the sound signals according to the volume of the set output sound, thereby amplifying them step by step. A plurality of amplifiers to prevent the burn out of, and a buffer for processing the acoustic signal according to the tone of the output sound is provided.

The matrix unit 12 selectively connects the input and output channels of the audio input unit 11 and the output unit 13 in a matrix form. That is, each input channel can selectively transmit a sound signal to each output channel. And it is controlled by the controller 17 that the matrix unit 12 selectively connects the input channel and the output channel to each other.

The operation unit 14 is for a user's operation, a volume switch for adjusting the volume of the output sound, a tone switch for adjusting the tone, an encoder switch for selecting an input channel and an output channel for setting the volume or tone, and the like. , A power on / off switch, and a switch for inputting a command signal of another user.

And the user's command signal input through the operation unit 14 is input to the control unit 17, the control unit 17 processes the input command signal.

The transceiver 15 is connected to the communication unit 25 of the controller 20 by wire or wirelessly to transmit and receive data. The data transmitted and received by the transmitter / receiver 15 includes the state of the audio mixer 10 (volume and tone of each channel, the matrix connection state of the input channel and the output channel, etc.), the current sound signal is input to which input channel, Whether the output channel is output or not, whether or not the battery supply of the power supply means 30, and the like, and the data received by the transceiver 15 includes the setting data to change the setting of the audio mixer.

The memory 16 stores a siren sound for informing an emergency situation and a sound for guiding an evacuation path for each speaker.

The controller 17 controls the audio mixer 10 as a whole.

And adjust the volume, tone, etc., the sound signal input and output according to the user's command signal input through the operation unit 14 or the command signal input from the controller 20,

The matrix unit 12 is controlled according to a preset program or an input command signal so that the sound signal input to the input channel is output to the output channel required.

If there is an acoustic signal informing of an emergency situation such as a fire, the siren sound stored in the memory 16 and the sound guiding the evacuation route are transmitted.

The controller 17 includes a matrix controller 17a for selectively connecting the input channel and the output channel to each other;

When a plurality of sound signals are input to the same output channel, a priority control unit 17b for controlling which sound signal or all sound signals is to be transmitted is provided. The priority control unit 17 interrupts the sound signal that is output in the event of an emergency such as a fire and transmits it to an output channel requiring the siren and the evacuation path sound stored in the memory 16.

The controller 20 allows the user to easily and precisely watch various settings of the audio mixer 10 and monitor the sound signal input / output states of the audio mixer 10. The controller 20 may utilize a PC. That is, a program for managing and monitoring the audio mixer 10 can be installed in the CPU 27 of the PC and used as the controller 20.

The controller 20 includes a communication unit 25, a display unit 21, a setting unit 24, and an internet connection unit 23.

The communication unit 25 transmits and receives various data to or from the transmission / reception unit 15 of the audio mixer 10 by wire or wirelessly.

The display unit 21 inputs the user while viewing various setting values of the audio mixer 10 and displays various information so that the broadcast state of the audio mixer 10 can be monitored.

The setting unit 24 is composed of a keyboard and a mouse, and the user operates the setting unit 24 to transmit various command signals to the CPU 27. Then, the CPU 27 transmits values for various settings of the audio mixer 10 to the audio mixer 10 through the communication unit 25 according to the input command signal, or sets the state of the audio mixer 10 or the current broadcast. The status is displayed on the display unit 21.

Various settings through the setting unit 24 may be performed by dragging a cursor on the display unit 21 or directly inputting a setting value by using a mouse.

The Internet connection unit 23 is for connecting to the Internet network, and the user can remotely control the controller 20 through the Internet network even if the user does not directly manage and monitor (monitor) the audio mixer 10 through the controller 20. After the authentication and access to the audio mixer 10 can be managed and monitored.

The uninterruptible power supply unit 30 is embedded in the audio mixer 10, and prevents a situation in which the audio mixer is not driven by a power failure by selectively using commercial power and battery power.

FIG. 2 is a block diagram of the uninterruptible power supply unit 30 according to the present invention, and FIGS. 3A and 3B are detailed circuit diagrams of FIG. 2. As shown in the drawing, the uninterruptible power supply unit includes a battery BAT and a converter unit ( 100), the charging unit 200, and the power selection unit 300 is made.

The battery has a capacity of supplying power to the audio mixer for about 30 minutes to 1 hour, and is normally charged through the charging unit 200 in an uninterruptible state to maintain a full state and when the power failure occurs, the power selection unit Supplies power charged by the audio mixer.

The converter unit 100 receives commercial AC power, converts it into DC power, and supplies the same to the audio mixer as driving power, and also supplies the charging unit 200 and the power selection unit 300.

The converter unit 100 includes a filter unit 110, a smoothing unit 120, a first transformer, a direct current unit 140, a second transistor, a fuse, a second control unit, a second transformer, and a first driving power supply unit 130. ) And the like.

First, a fuse F1 is connected to the input terminal to block an overcurrent of a commercial AC power input to protect a circuit thereafter.

The filter unit 110 is composed of a capacitor (C1, C2) and an inductor (L2) connected in parallel to each other to remove the noise of the commercial AC power input.

The smoothing unit 120 is composed of bridge diodes (D2, D3, D4, D5) and capacitors (C3, C4) connected in parallel to each other to smooth the AC power passing through the filter unit 110 to convert to DC power. .

The resistors R2 and R4 connected to the output of the smoothing unit 120 supply driving power for the initial driving of the second control unit U1.

The output power of the smoothing unit 120 is supplied to the first transformer T1, and the second transistor Q1 switches the output power of the smoothing unit 120 supplied to the first transformer to control the pulse width. .

The second transformer T2 is magnetically coupled to the first transformer T1, and the first driving power supply unit 130 converts the voltage induced in the second transformer into a DC power source so that the second control unit U1 Supply driving power to). The first driving power supply unit 130 includes a diode D8, a resistor R8, and capacitors C11 and C12.

In addition, the resistor R10 connected to the second transformer senses a voltage induced in the second transformer and transmits the voltage to the second controller. The second control unit U1 indirectly detects the magnitude of the output power of the first transformer through the magnitude of the induced voltage of the second transformer sensed by the resistor R10, and based on this, the second transistor Q1. To control the switching.

The resistors R9 and R11 and the capacitor C7 connected to the source terminal of the second transistor Q1 block and protect the overcurrent from flowing through the second transistor.

In addition, the resistors R3 and R5, the capacitor C14, and the diode D7 connected in parallel with the first transformer T1 prevent the reverse voltage from being applied to the filter part or the peace part, and the second transistor Q1 The drain voltage is filtered (peak suppressed).

The resistor R12, thermistor NTC, and the capacitor C8 connected to the second control unit U1 allow the second control unit to perform stable operation (mainly oscillation for switching control).

The DC unit 140 connected to the output terminal of the first transformer T1 rectifies and smoothes power induced in the secondary winding of the first transformer to DC power to convert the charging unit 200 and the power selector 300 into a DC power source. It supplies and also supplies to a load side. The DC unit 140 includes diodes D6 and D7, an inductor L1, capacitors C5 and C6, and a resistor R6.

The charging unit 200 includes a second driving power supply unit 210, a first control unit, a charging current applying unit 220, an LED LD1, a third transistor, a fifth transistor Q2, and a detection unit 230. It is made to include.

The second driving power supply 210 is composed of a fourth transistor Q4, a regulator U2, resistors R19, R20, R21, R26, and a capacitor C16 and is input from the converter unit 100. Step down to supply the driving power to the first control unit (U3). The first control unit U3 supplies the driving power to the third control unit U4 again.

The charging current applying unit 220 is a third control unit for keeping the resistors R14, R15, R23, and R24 and the output charging current of the resistors R14, R15, R23, and R24 constant (that is, constant current). It comprises (U4) and applies a constant current charging current to the battery.

The third control unit U4 receives the driving power from the first control unit and receives the magnitude of the charging current applied to the battery from the first control unit. The third control unit U4 receives a predetermined magnitude in the resistors R14, R15, R23, and R24. Allow current, that is, constant current, to be output.

The fifth transistor Q2 connected to the third control unit U4 is controlled to be turned on / off by the third control unit to prevent the reverse voltage from being applied to the second driving power supply unit 210 or the converter unit 100. do.

The resistors R16 and R25 and the capacitor C14 connected to the output terminals of the resistors R14, R15, R23, and R24 once again rectify the charging current applied to the battery, and also the resistors R16 and R25. Detects the magnitude of the current applied to the battery and transmits it to the first controller Q1.

The third transistor Q3 connects the charging current applying unit 220 and the battery BAT and is controlled on / off by the first control unit U3 to supply or block the charging current to the battery.

In addition, the detector 230 including two resistors R37 and R40 connected in series to the battery BAT detects the state of charge of the battery (that is, whether the battery is in a full or discharge state). U3), and the first control unit receiving the transmission controls the on / off of the third transistor Q3.

The LED LD1 connected to the first control unit U3 emits light in two colors so that the state of charge of the battery can be checked with a visual field. For example, when light is emitted in red, charging is performed in a discharged state. When light is emitted in blue, it is in a fully charged state and there is no charge. When the light is not turned on, an electrostatic state can be displayed.

The power selector 300 includes a first transistor Q6 and a regulator 310, and supplies the output power of the converter 100 to an audio mixer during an uninterruptible power supply, and supplies the output power from the converter 100. In case of power failure without power supply, the battery BAT is supplied to the audio mixer.

The first transistor Q6 is connected to the base terminal with a resistor R17 supplied with power from the converter unit 100 to be turned on / off so that power of the converter unit 100 or the battery is supplied to the audio mixer. In the present invention, when the first transistor Q6 is turned off, the power supply of the converter unit 100 is supplied to the audio mixer, but may be reversed (when the first transistor Q6 is turned on).

The regulator unit 310 includes a fourth control unit U4, a rectifier 320, and an inductor L3.

The inductor L3 boosts the power supplied from the battery, and the rectifier 320 rectifies the boosted power and supplies the rectified power to the load side (ie, the audio mixer). The rectifier 320 includes a diode D10, resistors R22 and R28, and capacitors C15 and C18.

In addition, the fourth controller U4 controls the magnitude of the voltage boosted and output to the rectifier 320 by controlling the current applied to the inductor L3 and the magnitude thereof.

The capacitor C17 provided in front of the fourth control unit U4 is charged with the power of the battery, and the charged power is discharged to the inductor L3 to be used for boosting.

As shown in the drawing, the power selector 300 may supply driving power to each other device that requires the driving power in addition to the audio mixer or to the audio mixer in the case where there are components requiring the driving power of a different size. Several can be provided to make it possible.

In the above description of the present invention has been described with respect to the horizontal arrangement pot set connected by a connecting pipe having a water channel having a specific shape and structure with reference to the accompanying drawings, the present invention can be variously modified and changed by those skilled in the art, such Modifications and variations are to be construed as falling within the protection scope of the present invention.

1 is a block diagram of an audio mixer according to the present invention.

Figure 2 is a block diagram of an uninterruptible power supply means according to the present invention.

3A and 3B are detailed circuit diagrams of FIG. 2.

<Description of the symbols for the main parts of the drawings>

10: audio mixer 11: input unit

12 output unit 13 matrix unit

14: operation unit 15: transceiver

16 memory 17 control unit

20 controller 21 display unit

24: setting unit 25: communication unit

27: CPU 30: uninterruptible power supply

100: converter section 110: filter section

120: smoothing unit 130: first drive power supply

140: DC unit 200: charging unit

210: second driving power supply unit 220: charging current applying unit

230: detector 300: power selector

310: regulator part 320: rectifier part

Claims (4)

An audio input unit having a plurality of input channels through which sound signals are input; An audio output unit including a plurality of output channels through which sound signals input to the audio input unit are output; A matrix unit for selecting and connecting channels of the audio input unit and the output unit; An operation unit for receiving a user's operation command signal; A transceiver for transmitting and receiving data, A multi-channel audio mixer including a controller for processing data received by the transceiver and controlling the matrix unit according to a predetermined program or a command signal of the operation unit; A communication unit for transmitting and receiving data with the transceiver of the audio mixer; A setting unit for receiving a user's audio mixer setting signal (eg, volume, treble, bass of an output sound signal); It comprises a display unit for displaying the setting signal of the setting unit and the sound signal input and output status of the input unit and the output unit of the audio mixer, A controller for setting and monitoring a broadcasting state (input and output states of sound signals) of the audio mixer; With battery, A converter unit for converting and outputting commercial AC power to DC power; A charging unit for charging the battery with an output power of the converter unit; It includes a power selection unit for supplying the output power of the converter unit in normal times, the power supply of the battery in case of power failure, And a power supply unit built in the audio mixer to supply an uninterruptible driving power to the audio mixer. The method of claim 1, The control unit of the audio mixer A matrix control unit controlling a connection relationship between an input channel of the audio input unit and an output channel of the audio output unit; A priority control unit which determines whether the input sound signal of the audio input unit is an emergency broadcast and transmits the priority signal to the audio output unit; The controller is an audio mixer device, characterized in that the Internet connection for enabling remote control after the authentication process by connecting through the Internet network. The method of claim 1 or 2, wherein the power supply means The power selector A first transistor which is turned on / off in accordance with the presence or absence of power from the converter and allows power to be input from the converter or battery according to an on / off state; It includes a regulator unit for converting the power input from the battery to output to the audio mixer, The converter section A filter unit for removing noise of an input AC power supply, A smoothing part for smoothing the output power of the filter part; A first transformer for transforming the output power of the smoothing unit; A direct current unit for smoothing and directing the output power of the first transformer; It comprises a second transistor for controlling the magnitude of the secondary output power by switching the power input to the primary side of the first transformer, The charging unit A charging current applying unit for processing a power input from the converter to apply a charging current to the battery; A third transistor supplying or blocking a charging current of the charging current applying unit to a battery; A detector for detecting a charging state of the battery; And a first controller configured to receive a signal from the detector and control the on / off of the third transistor. The method of claim 3, wherein The converter section A fuse (F1) for blocking an overcurrent of an input commercial AC power supply, The filter unit is composed of a capacitor (C1, C2) and inductor (L2) connected in parallel with each other, The smoothing part consisting of bridge diodes (D2, D3, D4, D5) and capacitors (C3, C4) connected in parallel with each other, A second control unit U1 for controlling switching of the second transistor Q1; Driving power supply resistors R2 and R4 for supplying initial driving power to the second control unit; A second transformer T2 magnetically coupled to the first transformer T1, A first driving power supply comprising a diode D8, a resistor R8, and capacitors C11 and C12, and smoothing the induced power of the second transformer to supply driving power to the second control unit; A resistor (R10) for sensing a voltage induced in the second transformer and transmitting the magnitude of the output power of the first transformer to the second controller; Resistors R9 and R11 and a capacitor C7 connected to the gate terminal of the second transistor to prevent an overcurrent from flowing through the second transistor; It includes the direct current unit consisting of a diode (D6, D7), an inductor (L1), a capacitor (C5, C6), a resistor (R6) connected to the secondary side of the first transformer, The charging unit It comprises a fourth transistor (Q4), regulator (U2), resistors (R19, R20, R21, R26), capacitor (C16) to convert the power input from the converter unit to drive to the first control unit (U3) A second driving power supply unit for supplying power; The third control unit U4 for keeping the resistors R14, R15, R23, and R24 outputting the charging current and the output charging current of the resistors R14, R15, R23, and R24 constant (that is, constant current). And the charging current applying unit comprising a, Resistors (R16 and R25) for sensing the magnitude of the output charging current of the charging current applying unit and transmitting the magnitude of the output charging current to the first control unit; A fifth transistor Q2 connected to the third control unit and blocking power input from the converter to prevent overcharging of the battery BAT; The sensing unit is composed of a charge detection resistor (R37, R40) for detecting the state of charge of the battery, Is connected to the first control unit and comprises an LED (LD1) for indicating the state of charge of the battery, The first controller transmits the charging current sensed by the resistors R16 and R25 to the third controller. The power selector A resistor (R17) for supplying power input from the converter to the base terminal of the first transistor (Q6) to turn on / off the first transistor; An inductor L3 for boosting the voltage input from the battery, a diode D10, resistors R22, R28, and capacitors C15, C18 are rectified to supply the load to the load side of the inductor L3. And a regulator unit including a rectifying unit configured to control the voltage and the step-up size of the inductor (L3).

Images