CN104052267B - Multi-voltage transformation circuit - Google Patents
Multi-voltage transformation circuit Download PDFInfo
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- CN104052267B CN104052267B CN201310082992.2A CN201310082992A CN104052267B CN 104052267 B CN104052267 B CN 104052267B CN 201310082992 A CN201310082992 A CN 201310082992A CN 104052267 B CN104052267 B CN 104052267B
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Abstract
The invention provides a multi-voltage transformation circuit. The multi-voltage transformation circuit comprises the following elements: a voltage source; a first voltage reduction circuit, a second voltage reduction circuit and a third voltage reduction circuit which are connected in series; a first input voltage control end; a first switch circuit which comprises a first PNP triode and a first NPN triode which are connected in series; a second input voltage control end; and a second switch circuit which comprises a second PNP triode and a second NPN triode which are connected in series. The multi-voltage transformation circuit, according to control level which is input by the first input voltage control end and the second input voltage control end and according to control of the first switch circuit and the second switch circuit, can transform voltages provided by the voltage source and respectively output multi-gear voltages to a voltage output end. The structure is simple and the cost is low.
Description
Technical field
The present invention relates to circuit field, more particularly to multiple pressure transforming circuit.
Background technology
Existing transforming circuit, in the load for needing to carry out transformation blood pressure lowering, drive circuit is relatively complicated, on market
The product of sale is both for loading required voltage value, and the transforming circuit of multichannel independence is respectively adopted carries out multiple-channel output voltage
Control, more control element need to be adopted, cause that circuit structure is complicated, not only cost of idleness but also taken up room.
The content of the invention
For the problems referred to above, it is an object of the invention to provide it is a kind of suitable for the load of various direct current transformations, and structure is simple
Single, low cost multiple pressure transforming circuit.
In order to solve above-mentioned technical problem, the invention provides a kind of multiple pressure transforming circuit, it includes：Voltage source；Series connection
The first reduction voltage circuit, the second reduction voltage circuit being arranged between the voltage source and voltage output end, and the 3rd reduction voltage circuit；
First input voltage control end；First switch circuit, it includes：First PNP triode and with the first PNP triode string
First NPN triode of connection, the colelctor electrode of first PNP triode is connected with the voltage source, launch collection is connected to first
Between reduction voltage circuit and the second reduction voltage circuit, base stage connect the emitter stage of first NPN triode, the poles of a NPN tri-
The base stage of pipe is connected with the first input voltage control end, grounded emitter；Second input voltage control end；Second switch electricity
Road, it includes：Second PNP triode and the second NPN triode connected with second PNP triode, the 2nd PNP
The colelctor electrode of audion and voltage source connection, transmitting collection are connected between the second reduction voltage circuit and the 3rd reduction voltage circuit, base
Pole connects the emitter stage of second NPN triode, the base stage of second NPN triode and the second input voltage control end phase
Connection, grounded emitter.
Wherein, first reduction voltage circuit, second reduction voltage circuit and the 3rd reduction voltage circuit include respectively multiple
The diode of series connection.
Wherein, the multiple pressure transforming circuit also includes the first electric capacity, the colelctor electrode of its one end and first PNP triode
Connection, other end ground connection.
Wherein, the multiple pressure transforming circuit also includes the second electric capacity, the colelctor electrode of its one end and second PNP triode
Connection, other end ground connection.
Wherein, the multiple pressure transforming circuit also includes the 3rd electric capacity, and its one end is connected to the 3rd reduction voltage circuit and institute
State between voltage output source, other end ground connection.
Wherein, the multiple pressure transforming circuit also includes being connected to the first input voltage control end with a NPN
The first current-limiting resistance between transistor base, and the second input voltage control end is connected to the 2nd NPN tri-
The second current-limiting resistance between pole pipe base stage.
Wherein, the first switch circuit also includes being connected to the base stage and a NPN of first PNP triode
The 3rd current-limiting resistance between transistor emitter.
Wherein, the second switch circuit also includes being connected to the base stage and the 2nd NPN of second PNP triode
The 4th current-limiting resistance between transistor emitter.
The multiple pressure transforming circuit of the present invention, can be input into according to the first input voltage control end and the second input voltage control end
Control level, and the control of first switch circuit and second switch circuit carries out transformation to the voltage that voltage source is provided, point
Multi gear voltage, and simple structure, low cost are not exported to voltage output end.
Description of the drawings
In order to be illustrated more clearly that technical scheme, the accompanying drawing to be used needed for embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the circuit diagram of the multiple pressure transforming circuit that embodiment of the present invention is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, embodiment of the present invention provides a kind of multiple pressure transforming circuit, and it includes：Voltage source 11；It is arranged in series
The first reduction voltage circuit 13 between the voltage source 11 and voltage output end 12, the second reduction voltage circuit 14, and the 3rd blood pressure lowering
Circuit 15；First input voltage control end 21, first switch circuit 22, the second input voltage control end 23, and second switch
Circuit 24.
First switch circuit 22 includes：First PNP triode Q1 and connect with first PNP triode Q1 first
NPN triode Q2.The colelctor electrode of first PNP triode Q1 is connected with the voltage source 11, launch collection is connected to the first drop
Between the reduction voltage circuit 14 of volt circuit 13 and second, base stage connect the emitter stage of the pole Q2 pipes of a NPN tri-, a NPN
The base stage of audion Q2 is connected with the first input voltage control end 21, grounded emitter.
Second switch circuit 24 includes：Second PNP triode Q3 and connect with second PNP triode Q3 second
NPN triode Q4, the colelctor electrode of second PNP triode Q3 is connected with the voltage source 11, launch collection is connected to the second drop
Between the reduction voltage circuit 15 of volt circuit 14 and the 3rd, base stage connect the emitter stage of second NPN triode Q4, the 2nd NPN
The base stage of audion Q4 is connected with the second input voltage control end 23, grounded emitter.
Wherein, in one embodiment, first reduction voltage circuit 13, second reduction voltage circuit 14 and the 3rd drop
Volt circuit 15 is respectively including the diode of multiple series connection.For example, as shown in figure 1, the first reduction voltage circuit 13 includes three diodes
D1, D2, D3, the second reduction voltage circuit 14 includes four diodes D4, D5, D6, D7, and the 3rd reduction voltage circuit 15 includes 3 diodes
D8、D9、D10.Above-mentioned ten diodes are 1N4007 type diodes, and certainly the model and quantity of above-mentioned diode can basis
Being actually needed for blood pressure lowering is changed, and the present invention is not limited this.
In one embodiment, multiple pressure transforming circuit also includes the first electric capacity C1, its one end and first PNP triode
The colelctor electrode connection of Q1, other end ground connection；Second electric capacity C2, its one end is connected with the colelctor electrode of second PNP triode Q3,
The other end is grounded；3rd electric capacity C3, its one end is connected between the 3rd reduction voltage circuit 15 and the voltage output source 12, separately
One end is grounded.First electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3 can each serve as filter action.
In one embodiment, multiple pressure transforming circuit also include be connected to the first input voltage control end 21 with it is described
The first current-limiting resistance R2 between first NPN triode Q2 base stage, and be connected to the second input voltage control end 23 with
The second current-limiting resistance R4 between second NPN triode base stage Q4.
In one embodiment, first switch circuit 22 also include being connected to the base stage of first PNP triode Q1 with
The 3rd current-limiting resistance R1 between the first NPN triode Q2 emitter stage.The second switch circuit 24 also includes being connected to
The 4th current-limiting resistance R3 between the base stage of second PNP triode Q3 and the second NPN triode Q4 emitter stage.It is above-mentioned
Resistance R1, R2, R3, R4 can play metering function.
Below so that voltage source 11 is+20V DC input voitages as an example, the working condition of multiple pressure transforming circuit is illustrated.
D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 are diode 1N4007, play hypotensive effect；
Q1, Q2 are PNP triode, play conducting effect；
Q3, Q4 are NPN triode, play conducting effect；
R1, R2, R3, R4 are resistance, play metering function；
C1, C2, C3 are electric capacity, are strobed.
1N4007 is general-purpose diode, and forward voltage drop value is 0.7V, and the step-down value of N number of 1N4007 is：0.7V.
When the first input voltage control end IN1 has high level, Q2 conductings drag down the base stage of Q1, Q1 conductings ,+20V's
Power supply is directly connected between D3 and D4, and after D4, D5, D6, D7, D8, D9 and D10 blood pressure lowering, the voltage of OUT terminal output is
15.1V；
When the second input voltage control end IN2 has high level, Q4 conductings drag down the base stage of Q3, Q3 conductings ,+20V's
Power supply is directly connected between D7 and D8, and after D8, D9 and D10 blood pressure lowering, the voltage of OUT terminal output is 17.9V；
When IN1, IN2 are low level, Q2, Q4 end, and+20V is through D1, D2, D3, D4, D5, D6, D7, D8, D9
After D10 blood pressure lowerings, the voltage of OUT terminal output is 13V.
By above-mentioned multiple pressure transforming circuit, the height control level that the voltage source of+20V can be input into according to IN1 and IN2, with
And the control of first switch circuit 22 and second switch circuit 24, respectively to OUT terminal output 15.1V, 17.9V and 13V third gear electricity
Pressure.
The multiple pressure transforming circuit of the present invention, can be according to the first input voltage control end 21 and the second input voltage control end 23
The control level of input, and the control of first switch circuit 22 and second switch circuit 24, the voltage that voltage source 11 is provided
Transformation is carried out, multi gear voltage, and simple structure, low cost is exported to voltage output end 12 respectively.The multiple pressure of the present invention becomes piezoelectricity
Road could be applicable to various direct current transformation loads.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of multiple pressure transforming circuit, it includes：
Voltage source；
The first reduction voltage circuit, the second reduction voltage circuit being arranged in series between the voltage source and voltage output end, and the 3rd
Reduction voltage circuit；
First input voltage control end；
First switch circuit, it includes：First PNP triode and the poles of a NPN tri- connected with first PNP triode
Pipe, the emitter stage of first PNP triode be connected with the voltage source, colelctor electrode is connected to the first reduction voltage circuit and second drops
Between volt circuit, base stage connect the colelctor electrode of first NPN triode, the poles of a NPN tri- by the 3rd current-limiting resistance
The base stage of pipe is connected with the first input voltage control end, grounded emitter；
Second input voltage control end；
Second switch circuit, it includes：Second PNP triode and the poles of the 2nd NPN tri- connected with second PNP triode
Pipe, the emitter stage of second PNP triode is connected with the voltage source, colelctor electrode is connected to the second reduction voltage circuit and the 3rd drop
Between volt circuit, base stage connect the colelctor electrode of second NPN triode, the poles of the 2nd NPN tri- by the 4th current-limiting resistance
The base stage of pipe is connected with the second input voltage control end, grounded emitter.
2. multiple pressure transforming circuit according to claim 1, it is characterised in that first reduction voltage circuit, second drop
Volt circuit and the 3rd reduction voltage circuit are respectively including the diode of multiple series connection.
3. multiple pressure transforming circuit according to claim 1, it is characterised in that also including the first electric capacity, its one end with it is described
The emitter stage connection of the first PNP triode, other end ground connection.
4. multiple pressure transforming circuit according to claim 1, it is characterised in that also including the second electric capacity, its one end with it is described
The emitter stage connection of the second PNP triode, other end ground connection.
5. multiple pressure transforming circuit according to claim 1, it is characterised in that also including the 3rd electric capacity, its one end is connected to
Between 3rd reduction voltage circuit and the voltage output end, other end ground connection.
6. multiple pressure transforming circuit according to claim 1, it is characterised in that also including being connected to first input voltage
The first current-limiting resistance between control end and the first NPN triode base stage, and it is connected to the second input voltage control
The second current-limiting resistance between end processed and the second NPN triode base stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082992.2A CN104052267B (en) | 2013-03-15 | 2013-03-15 | Multi-voltage transformation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082992.2A CN104052267B (en) | 2013-03-15 | 2013-03-15 | Multi-voltage transformation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104052267A CN104052267A (en) | 2014-09-17 |
| CN104052267B true CN104052267B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310082992.2A Active CN104052267B (en) | 2013-03-15 | 2013-03-15 | Multi-voltage transformation circuit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107769159A (en) * | 2017-10-25 | 2018-03-06 | 浙江致威电子科技有限公司 | A kind of earth leakage protective device, electrical leakage detecting method and a kind of charging equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572412A (en) * | 1994-05-26 | 1996-11-05 | Fujitsu Limited | Power supply with heated protection diode |
| CN201194368Y (en) * | 2008-05-12 | 2009-02-11 | 连德伦 | Step-down transformer for diode |
| CN202503439U (en) * | 2012-04-27 | 2012-10-24 | 佛山市顺德区瑞德电子实业有限公司 | Capacitance-resistance voltage reduction circuit of low power supply |
-
2013
- 2013-03-15 CN CN201310082992.2A patent/CN104052267B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572412A (en) * | 1994-05-26 | 1996-11-05 | Fujitsu Limited | Power supply with heated protection diode |
| CN201194368Y (en) * | 2008-05-12 | 2009-02-11 | 连德伦 | Step-down transformer for diode |
| CN202503439U (en) * | 2012-04-27 | 2012-10-24 | 佛山市顺德区瑞德电子实业有限公司 | Capacitance-resistance voltage reduction circuit of low power supply |
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| Publication number | Publication date |
|---|---|
| CN104052267A (en) | 2014-09-17 |
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