CN104716943A - Control device, audio power amplification system and vehicle-mounted equipment - Google Patents
Control device, audio power amplification system and vehicle-mounted equipment Download PDFInfo
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- CN104716943A CN104716943A CN201310687432.XA CN201310687432A CN104716943A CN 104716943 A CN104716943 A CN 104716943A CN 201310687432 A CN201310687432 A CN 201310687432A CN 104716943 A CN104716943 A CN 104716943A
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Abstract
The invention provides a control device, an audio power amplification system and vehicle-mounted equipment. The control device comprises a first switching tube, a second switching tube, a first control circuit, a second control circuit and an or gate control circuit. The first control circuit is used for controlling the first switching tube to be closed or opened, and the second control circuit is used for controlling the second switching tube to be closed or opened. The first pole of the first switching tube is connected with a first power source, the control pole of the first switching tube is connected with the first control circuit, and the second pole of the first switching tube is connected with the first input end of the or gate control circuit. The first pole of the second switching tube is connected with a second power source, the control pole of the second switching tube is connected with the second control circuit, and the second pole of the second switching tube is connected with the second input end of the or gate control circuit. The voltage of the second power source is smaller than that of the first power source, and the or gate control circuit outputs signals with high potential in input signals. The control device is simple in circuit structure and easy to achieve.
Description
Technical field
The present invention relates to electronic circuit technology field, be specifically related to a kind of control device, audio power amplification system and mobile unit.
Background technology
Electronic equipment can have different operating states, and the power amplifier of such as audio power amplification system can have the multiple operating states such as quiet, standby and normal.Under normal circumstances, the signal of different potentials is inputed to the control pin of described electronic equipment, described electronic equipment namely can be made to enter different operating states.Wherein, the signal inputing to the different potentials of the control pin of described electronic equipment can be produced by corresponding control circuit.
But the existing usual comparatively complexity of control circuit structure entering different operating state for controlling described electronic equipment, realizes difficulty larger.
Summary of the invention
The problem that the embodiment of the present invention solves is the operating state as circuit controling electronic equipment that is how simple and that easily realize.
For solving the problem, the embodiment of the present invention provides a kind of control device, described control device comprises: the first switching tube, second switch pipe, for controlling first control circuit that described first switching tube closes or disconnect, for controlling the second control circuit that described second switch pipe closes or disconnects, and or gate control circuit; First pole of described first switching tube is connected with the first power supply, and control pole and be connected with first control circuit, the second pole is connected with first input end that is described or gate control circuit; First pole of described second switch pipe is connected with second source, and control pole and be connected with second control circuit, the second pole is connected with the second input that is described or gate control circuit; The voltage of described second source is less than the voltage of described first power supply, and signal higher for current potential in inputted signal exports by described or gate control circuit.
Alternatively, described first control circuit comprises: with gate control circuit, is describedly connected with control signal source with the input of gate control circuit, and output is connected with the control pole of described first switching tube.
Alternatively, describedly to comprise with gate control circuit: the 3rd switching tube and the 4th switching tube; The control pole of described 3rd switching tube is connected with control signal source, the first pole ground connection, and the second pole is connected with the first pole of described 4th switching tube; The control pole of described 4th switching tube is connected with control signal source, and the second pole is connected with the control pole of described first switching tube.
Alternatively, described 3rd switching tube, the 4th switching tube are NPN type triode.
Alternatively, described second control circuit comprises: control switch, and the first end of described control switch is connected with described control signal source, and the second end is connected with the control pole of described second switch pipe.
Alternatively, described control switch is the 5th switching tube, and the control pole of described 5th switching tube is connected with control signal source, the first pole ground connection, and the second pole is connected with the control pole of described second switch pipe.
Alternatively, described 5th switching tube is NPN type triode.
Alternatively, described or gate control circuit comprises: the pull down resistor that common cathode diode and first end are connected with the negative electrode of described common cathode diode, the first anode of described common cathode diode is connected with the second pole of described first switching tube, second plate is connected with the second pole of described second switch pipe, the second end ground connection of described pull down resistor.。
Alternatively, described first switching tube and described second switch pipe are PNP type triode.
Alternatively, described control device also comprises: electric capacity, and the first end of described electric capacity is connected with described or gate control circuit output, the second end ground connection.
Embodiments of the invention additionally provide a kind of audio power amplification system, and described system comprises: above-mentioned control device and the power amplifier be connected with the output of described control device.
Embodiments of the invention additionally provide a kind of mobile unit, and described mobile unit comprises above-mentioned audio power amplification system.
Compared with prior art, the technical scheme of the embodiment of the present invention has the following advantages:
By the first switching tube is connected with the first power supply, second switch pipe is connected with second source, and adopt first control circuit and second control circuit to control the closed or disconnection of described first switching tube and described second switch pipe respectively, and then by or gate control circuit signal that the first switching tube or second switch pipe are inputted in the higher signal of current potential export, because the voltage of described first power supply is different with the voltage of described second source, thus the signal of different potentials can be produced, circuit structure is simple, and easily realizes.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of control device in the embodiment of the present invention;
Fig. 2 is the structural representation of another kind of control device in the embodiment of the present invention.
Embodiment
Existing for controlling electronic equipment, to enter the control circuit structure of different operating states comparatively complicated, and it is larger to realize difficulty.
For the problems referred to above, The embodiment provides a kind of control device, described device comprises the first switching tube, second switch pipe, first control circuit, second control circuit and or gate control circuit.Wherein, described first control circuit controls the closed of the first switching tube or disconnects, and described second control circuit controls the closed of second switch pipe or disconnects, and described first switching tube is connected with the first power supply.Described second switch pipe is connected with second source.Under the control of described first control circuit and described second control circuit, signal higher for current potential in inputted signal, to signal that is described or gate control circuit input different potentials, is exported by described or gate control circuit by described first switching tube and second switch pipe.Described control device not only circuit structure is comparatively simple, and easily realizes.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.
See Fig. 1, present embodiments provide a kind of control device, described device can comprise: the first switching tube 102, second switch pipe 104, first control circuit 106, second control circuit 108 and or gate control circuit 110.
Wherein, described first control circuit 106 is connected with the control pole of described first switching tube 102, for controlling the closed of described first switching tube 102 or disconnecting.First pole of described first switching tube 102 is connected with the first power supply, the second pole with or the first input end of gate control circuit 110 be connected.Described second control circuit 108 is connected with the control pole of described second switch pipe 104, for controlling the closed of described second switch pipe or disconnecting.First pole of described second switch pipe 104 is connected with second source, the second pole with or the second input of gate control circuit 110 be connected.The voltage of the first power supply is V
1, the voltage of second source is V
2, and V
1>V
2.
When described first control circuit 106 control described first switching tube 102 close time, i.e. described first switching tube 102 conducting, voltage that is described or gate control circuit 110 first input end is the voltage V of the first power supply
1.When described first control circuit 106 control described first switching tube 102 disconnect time, voltage that is described or gate control circuit 110 first input end is 0V.
When described second control circuit 108 control described second switch pipe 104 close time, i.e. described second switch pipe 104 conducting, voltage that is described or gate control circuit 110 second input is the voltage V of second source
2.When described second control circuit 108 control described second switch pipe 104 disconnect time, voltage that is described or gate control circuit 110 first input end is 0V.
It should be noted that, described first switching tube 102 both can disconnect with second switch pipe 104 simultaneously, and now the voltage of two inputs of described or gate control circuit 110 is 0V; Also can close, now first input end voltage that is described or gate control circuit 110 is V simultaneously
1, the second input terminal voltage is V
2; Can also be that one of them closes, another disconnects, and now described first input end voltage is V
1, the second input terminal voltage is 0V, or first input end voltage is 0V, and the second input terminal voltage is V
2.
Described or gate control circuit 110 selects the higher voltage of the voltage of the voltage of first input end and the second input to export.That is, the voltage V of described or gate control circuit 110 output
outcan be 0V, V
1or V
2.
Those skilled in the art can arrange the voltage V of the first power supply according to actual conditions
1, second source voltage V
2, and or the voltage V of gate control circuit 110 output
outand the corresponding relation between the operating state of electronic equipment.Be not construed as limiting herein.Such as, can by V
1be set to 12V, V
2be set to 5V, as 1.5V>=V
outduring>=0V, described electronic equipment enters holding state, as 5V>=V
outduring>=3.5V, described electronic equipment enters mute state, V
outduring>=7V, described electronic equipment enters normal operating conditions.
In concrete enforcement, described first switching tube 102 can be PNP type triode, also can be PMOS.Similarly, described second switch pipe 104 can be PNP type triode, also can be PMOS.No matter the switching tube of described first switching tube 102 and second switch pipe 104 why type, as long as can play the effect of switch, is not construed as limiting herein.In embodiments of the invention, be PNP type triode for described first switching tube 102 and second switch pipe 104 and be described.
As shown in Figure 1, when the first switching tube 102 and second switch pipe 104 are PNP type triode, the base stage of described first switching tube 102 is for controlling pole, and launch very the first pole, current collection is the second pole very.That is, the base stage of described first switching tube 102 is connected with first control circuit 106, and emitter is connected with the first power supply, collector electrode with or the first input end of gate control circuit 110 be connected.Similarly, the base stage of described second switch pipe 104 is connected with second control circuit 108, and emitter is connected with second source, collector electrode with or the second input of gate control circuit 110 be connected.
When the output of described first control circuit 106 is high level, described first switching tube 102 conducting, and when the output of described first control circuit 106 is low level, described first switching tube 102 disconnects.When the output of described second control circuit 108 is high level, the conducting of described second switch pipe 104, and when the output of described second control circuit 108 is level, described second switch pipe 104 disconnects.
See Fig. 2, in concrete enforcement, described first control circuit can be and gate control circuit 206, is describedly connected with control signal source 200 with the input of gate control circuit 206, and output is connected with the control pole of described first switching tube 202.Wherein, described gate control circuit 206 is provided with plural input, accordingly, described control signal source 200 can produce plural digital signal, describedly inputs a digital signal with each input of gate control circuit 206.
In concrete enforcement, described or gate control circuit can comprise: the pull down resistor R that common cathode diode 210 and first end are connected with the negative electrode of described common cathode diode 210, and described common cathode diode 210 comprises two anodes, is respectively the first anode and second plate.Wherein, the first anode is connected with the second pole of described first switching tube 202, and second plate is connected with the second pole of described second switch pipe 204, the second end ground connection of described pull down resistor R.When described first switching tube 202 and second switch pipe 204 are PNP type triode, the described first anode is connected with the collector electrode of the first switching tube 202, and second plate is connected with the collector electrode of second switch pipe 204.
The negative electrode of described common cathode diode 210 is the output of described control device, and the voltage exported is V
out.Now, described V is being determined
outvalue time, the pressure drop of diode should be considered.Such as, V
outthe value after the pressure drop of diode can be deducted for the voltage of described common cathode diode first input end.The output of described control device is connected with the control pin of electronic equipment, described electronic equipment can be controlled and enter different operating states.
When described with gate control circuit 206 output logic high level time, described first switching tube 202 conducting, the voltage of the first input end of described or gate control circuit 206 is the voltage V of the first power supply
1.When described with gate control circuit 206 output logic low level time, described first switching tube 202 disconnects, and the voltage of the first input end of described or gate control circuit 206 is 0V.Therefore, the digital signal with gate control circuit 206 can be inputed to by regulating described control signal source 200, and then correspondingly produce logic high or logic low with gate control circuit 206 described in making, thus the disconnection or closed of the first switching tube 202 can be controlled.
In concrete enforcement, describedly can to comprise with gate control circuit 206: the 3rd switching tube 2062 and the 4th switching tube 2064.Wherein, the control pole of described 3rd switching tube 2062 is connected with control signal source 200, the first pole ground connection, and the second pole is connected with the first pole of described 4th switching tube 2064.The control pole of described 4th switching tube 2064 is connected with control signal source 200, and the second pole is connected with the control pole of described first switching tube 202.
Wherein, described 3rd switching tube 2062 can be NPN type triode, also can be NMOS tube.Similarly, the 4th switching tube 2064 can be NPN type triode, also can be NMOS tube.The no matter switching tube of described 3rd switching tube 2062 and the 4th switching tube 2064 why type, as long as described 3rd switching tube 2062 and described 4th switching tube 2064 can play the effect with gate control circuit 206, namely the first switching tube 202 described in the Digital Signals inputted by control signal source 200 closed or disconnect, is not construed as limiting herein.Be NPN type triode for described 3rd switching tube 2062 and the 4th switching tube 2064 in the present embodiment to be described.
When described 3rd switching tube 2062 and the 4th switching tube 2064 are NPN type triode, the base stage of described 3rd switching tube 2062 is connected with described control signal source 200, grounded emitter, and collector electrode is connected with the emitter of described 4th switching tube 2064.The base stage of described 4th switching tube 2064 is connected with control signal source 200, and collector electrode is connected with the base stage of described first switching tube 202.
When the digital signal that control signal source 200 inputs to the 3rd switching tube 2062 and the 4th switching tube 2064 is high level, 3rd switching tube 2062 and all conductings of the 4th switching tube 2064, export high level with gate control circuit 206, thus it is closed to control the first switching tube 202.When the digital signal that control signal source 200 inputs to the 3rd switching tube 2062 and the 4th switching tube 2064 has one to be low level, namely one in the 3rd switching tube 2062 and the 4th switching tube 2064 when disconnecting, described with gate control circuit 206 equal output low levels, thus control described first switching tube 202 and disconnect.
In concrete enforcement, as shown in Figure 2, described second control circuit can comprise control switch 208, and the first end of described control switch 208 is connected with control signal source 200, and the second end is connected with the control pole of second switch pipe 204.When described second switch pipe 204 is PNP type triode, the second end of described control switch 208 is connected with the base stage of described second switch pipe 204.Control signal source 200 supplied with digital signal to control switch 208, and then controls the disconnection or closed of described control switch 208, thus controls the disconnection or closed of second switch pipe 204.
Such as, when described control signal source 200 input high level is to control switch 208, the conducting of described control switch 208, and then make described control switch pipe 208 output logic low level, thus control second switch pipe 204 disconnects, second input of described or gate control circuit, namely the second plate voltage of described common cathode diode 210 is 0V.Also can when described control signal source 200 input high level be to control switch 208, described control switch 208 disconnects, and then make described control switch 208 output logic low level, thus it is closed to control second switch pipe 204, second input of described or gate control circuit, namely the second plate voltage of described common cathode diode 210 is V
2.
That is, the corresponding relation between the digital signal that described control signal source 200 exports and the state of described control switch 208 can set arbitrarily, as long as can play the effect controlling second switch pipe 204.
Further, described control switch 208 can be the 5th switching tube 2082.Now, the control pole of described 5th switching tube 2082 is connected with control signal source 200, the first pole ground connection, and the second pole is connected with the control pole of described second switch pipe 204.
In concrete enforcement, described 5th switching tube 2082 can be NPN type triode, can also be NMOS tube, as long as can play the effect of control switch.In the present embodiment, be described for NPN type triode for described 5th switching tube 2082.
When the signal that control signal source 200 inputs to the 5th switching tube 2082 is logic high, described 5th switching tube 2082 conducting, now, the control pole of described second switch pipe 204 be input as 0V, namely described second switch pipe 204 disconnects, and the voltage of the second plate of common cathode diode 210 is 0V.When the signal that control signal source 200 inputs to the 5th switching tube 2082 is logic low, described 5th switching tube 2082 closes, now, and the control pole input high level of described second switch pipe 204, namely described second switch pipe 204 closes, and the voltage of the second plate of common cathode diode 210 is V
2.
In concrete enforcement, as shown in Figure 2, described control device can also comprise electric capacity C, and the first end of described electric capacity C is connected with the negative electrode of described common cathode diode 210, the second end ground connection, carries out filtering for the signal exported the output of described control device.
In concrete enforcement, as shown in Figure 2, described control device can also comprise pull down resistor R, mainly for the protection of described control device.
Embodiments of the invention additionally provide corresponding audio power amplification system, and described audio power amplification system comprises above-mentioned control device, and the power amplifier be connected with the output of described control device.
Embodiments of the invention additionally provide corresponding mobile unit, and described mobile unit comprises above-mentioned audio power amplification system.
It should be noted that, in embodiments of the invention, the output of described control device not only can be connected with the control pin of power amplifier, described electronic equipment can also be connected with the control pin of other electronic equipments, as long as can enter different operating states according to the input signal of different potentials.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (12)
1. a control device, it is characterized in that, comprise: the first switching tube, second switch pipe, for controlling first control circuit that described first switching tube closes or disconnect, for controlling the second control circuit that described second switch pipe closes or disconnects, and or gate control circuit; First pole of described first switching tube is connected with the first power supply, and control pole and be connected with first control circuit, the second pole is connected with first input end that is described or gate control circuit; First pole of described second switch pipe is connected with second source, and control pole and be connected with second control circuit, the second pole is connected with the second input that is described or gate control circuit; The voltage of described second source is less than the voltage of described first power supply, and signal higher for current potential in inputted signal exports by described or gate control circuit.
2. control device as claimed in claim 1, it is characterized in that, described first control circuit comprises: with gate control circuit, is describedly connected with control signal source with the input of gate control circuit, and output is connected with the control pole of described first switching tube.
3. control device as claimed in claim 2, is characterized in that, describedly comprises with gate control circuit: the 3rd switching tube and the 4th switching tube; The control pole of described 3rd switching tube is connected with control signal source, the first pole ground connection, and the second pole is connected with the first pole of described 4th switching tube; The control pole of described 4th switching tube is connected with control signal source, and the second pole is connected with the control pole of described first switching tube.
4. control device as claimed in claim 3, it is characterized in that, described 3rd switching tube, the 4th switching tube are NPN type triode.
5. control device as claimed in claim 1, it is characterized in that, described second control circuit comprises: control switch, and the first end of described control switch is connected with described control signal source, and the second end is connected with the control pole of described second switch pipe.
6. control device as claimed in claim 5, it is characterized in that, described control switch is the 5th switching tube, and the control pole of described 5th switching tube is connected with control signal source, the first pole ground connection, and the second pole is connected with the control pole of described second switch pipe.
7. control device as claimed in claim 6, it is characterized in that, described 5th switching tube is NPN type triode.
8. control device as claimed in claim 1, it is characterized in that, described or gate control circuit comprises: the pull down resistor that common cathode diode and first end are connected with the negative electrode of described common cathode diode, the first anode of described common cathode diode is connected with the second pole of described first switching tube, second plate is connected with the second pole of described second switch pipe, the second end ground connection of described pull down resistor.
9. control device as claimed in claim 1, it is characterized in that, described first switching tube and described second switch pipe are PNP type triode.
10. control device as claimed in claim 1, it is characterized in that, also comprise: electric capacity, the first end of described electric capacity is connected with described or gate control circuit output, the second end ground connection.
11. 1 kinds of audio power amplification systems, is characterized in that, comprising: the control device as described in any one of claim 1 to 10, and the power amplifier be connected with the output of described control device.
12. 1 kinds of mobile units, is characterized in that, comprising: audio power amplification system as claimed in claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687432.XA CN104716943A (en) | 2013-12-13 | 2013-12-13 | Control device, audio power amplification system and vehicle-mounted equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687432.XA CN104716943A (en) | 2013-12-13 | 2013-12-13 | Control device, audio power amplification system and vehicle-mounted equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104716943A true CN104716943A (en) | 2015-06-17 |
Family
ID=53415963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310687432.XA Pending CN104716943A (en) | 2013-12-13 | 2013-12-13 | Control device, audio power amplification system and vehicle-mounted equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104716943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919692A (en) * | 2016-10-05 | 2018-04-17 | 拉碧斯半导体株式会社 | Power transmission device and power transmission method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2483084A1 (en) * | 1980-05-20 | 1981-11-27 | Dassault Electronique | Switching suppression circuit for pulse radar receiver - uses clock circuits and logic circuits to obtain time interval for phase cancelling signals |
| CN201574958U (en) * | 2009-06-09 | 2010-09-08 | 黑龙江龙煤矿业集团有限责任公司七台河分公司 | Double-fan control system |
| CN102468583A (en) * | 2010-11-17 | 2012-05-23 | 鸿富锦精密工业（深圳）有限公司 | Control circuit |
| US20130099717A1 (en) * | 2011-10-20 | 2013-04-25 | Johnson Electric S.A. | Control circuit for an electric fan for motor vehicles |
-
2013
- 2013-12-13 CN CN201310687432.XA patent/CN104716943A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2483084A1 (en) * | 1980-05-20 | 1981-11-27 | Dassault Electronique | Switching suppression circuit for pulse radar receiver - uses clock circuits and logic circuits to obtain time interval for phase cancelling signals |
| CN201574958U (en) * | 2009-06-09 | 2010-09-08 | 黑龙江龙煤矿业集团有限责任公司七台河分公司 | Double-fan control system |
| CN102468583A (en) * | 2010-11-17 | 2012-05-23 | 鸿富锦精密工业（深圳）有限公司 | Control circuit |
| US20130099717A1 (en) * | 2011-10-20 | 2013-04-25 | Johnson Electric S.A. | Control circuit for an electric fan for motor vehicles |
Non-Patent Citations (1)
| Title |
|---|
| 杨建宁: "《21世纪高等院校教材 电子技术》", 28 February 2005 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919692A (en) * | 2016-10-05 | 2018-04-17 | 拉碧斯半导体株式会社 | Power transmission device and power transmission method |
| JP2021180612A (en) * | 2016-10-05 | 2021-11-18 | ラピスセミコンダクタ株式会社 | Power transmission device |
| JP7261840B2 (en) | 2016-10-05 | 2023-04-20 | ラピスセミコンダクタ株式会社 | power transmission equipment |
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Application publication date: 20150617 |