CN202068345U - Circuit capable of converting single power supply into positive and negative power supplies - Google Patents
Circuit capable of converting single power supply into positive and negative power supplies Download PDFInfo
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- CN202068345U CN202068345U CN2011200539305U CN201120053930U CN202068345U CN 202068345 U CN202068345 U CN 202068345U CN 2011200539305 U CN2011200539305 U CN 2011200539305U CN 201120053930 U CN201120053930 U CN 201120053930U CN 202068345 U CN202068345 U CN 202068345U
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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Abstract
The utility model relates to a circuit capable of converting a single power supply into positive and negative power supplies, which comprises an oscillating circuit, two inverting circuits, two pushing circuits and a rectification and filter circuit, wherein the oscillating circuit is used for converting a DC (Direct Current) voltage of the single-phase power supply into a positive and negative pulse voltage, the reverting circuits are connected in the positive and negative pulse voltage converted by the oscillating circuit and output positive and negative pulse voltages, the pushing circuit is connected into pulse voltages with opposite phases output by the reverting circuits and outputs amplified positive and negative pulse voltages, and the rectification and filter circuit is connected into the positive and negative pulse voltage amplified by the pushing circuit and converts the voltage into a stable positive-negative voltage. The circuit has the beneficial effects that as the design of the oscillating circuit is adopted, the influence of the change of a power supply to the oscillating frequency can be reduced, and the dynamic power consumption of circuit working can be reduced; as inverters are connected in parallel, the output current is increased, so that the anti-interference capability of the circuit is strengthened; and the positive half and negative half cycles of an input pulse voltage signal are respectively amplified by three triodes, so as to synthetize a pulse voltage signal which is amplified to two to three hundred times.
Description
Technical Field
The utility model relates to an electricity field especially relates to a positive negative power supply circuit of single power conversion.
Background
When the general audio electric appliance works, a positive power supply and a negative power supply are required to be provided. At this time, if the power is supplied by a single power supply, the sound electrical appliance and other electrical appliances needing positive and negative power supplies are influenced. Usually, vehicles such as automobiles, ships, trains and the like can only be powered by storage batteries, and the storage batteries only provide direct-current voltage and cannot be used as positive and negative power supplies, so that a lot of inconvenience is brought to the use of instruments which need to work by the positive and negative power supplies.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a single power supply conversion positive and negative power supply circuit capable of converting a single power supply into a positive and negative power supply.
In order to achieve the above object, the single power supply conversion positive and negative power supply circuit includes: an oscillation circuit, two inverter circuits, two push circuits and a rectifying and filtering circuit, wherein,
an oscillation circuit for converting a direct current voltage of a single power supply into a positive and negative pulse voltage;
the input end of the first inverter circuit is connected to the pulse voltage output end of the oscillation circuit and outputs the phase of the pulse voltage in an inverted manner, and the input end of the second inverter circuit is connected to the inverted output end of the first inverter circuit and outputs the pulse voltage output in an inverted manner in a phase inverted manner again;
the first pushing circuit is connected to the inverting output end of the first inverting circuit and amplifies the pulse voltage output in the first inverting mode; the second pushing circuit is connected to the inverting output end of the second inverting circuit; amplifying the pulse voltage inverted for the second time;
and the rectifying and filtering circuit is respectively connected with the amplifying ends of the first pushing circuit and the second pushing circuit and converts the positive and negative pulse voltage amplified by the pushing circuits into stable positive and negative voltage.
Preferably, the oscillation circuit includes a first resistor, a second resistor, a first capacitor and two CMOS inverters, wherein one end of the second resistor is connected between the two CMOS inverters through a wire, the other end of the second resistor is connected between the first resistor and the first capacitor through a wire, the first resistor is connected with the first CMOS inverter, and the first capacitor is connected with the second CMOS inverter and is connected with the input end of the first inverter circuit.
The first inverter circuit and the second inverter circuit are both formed by two CMOS inverters connected in parallel.
The first pushing circuit and the second pushing circuit are both composed of two common collector amplifying circuits.
The utility model has the advantages that:
1. by adopting the design of the oscillating circuit, the influence of power supply change on the oscillating frequency is reduced, and the dynamic power consumption of the circuit work is reduced;
2. the output current is increased by adopting a connection mode that two CMOS inverters are connected in parallel, so that the anti-interference capability of the circuit is enhanced, and the voltage range of a power supply is maintained at 3-20V;
3. the positive and negative half cycles of the input pulse voltage signal are amplified by the two triodes which are connected in parallel with each other and are respectively collected into the amplifying circuit, and then the pulse voltage signal which is amplified by two to three hundred times is synthesized.
Drawings
Fig. 1 is a circuit diagram of the single power supply conversion positive and negative power supply circuit of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings.
As shown in fig. 1, a single power supply conversion positive and negative power supply circuit includes an oscillation circuit 1, two inverter circuits, two push circuits and a rectifying and filtering circuit 6; wherein,
an oscillation circuit 1 for converting a direct current voltage of a single power source into a positive and negative pulse voltage;
the input end of the first inverter circuit 2 is connected with the pulse voltage output end of the oscillation circuit 1 to output the phase inversion of the pulse voltage, and the input end of the second inverter circuit 3 is connected with the inverting output end of the first inverter circuit 2 to output the pulse voltage output in the inverted phase inversion again;
the first pushing circuit 4 is connected to the inverting output end of the first inverting circuit 2 and amplifies the pulse voltage output in the first inverting mode; the second pushing circuit 5 is connected to the inverting output end of the second inverting circuit 3, and amplifies the pulse voltage inverted for the second time;
and the rectifying and filtering circuit 6 is respectively connected with the amplifying ends of the first pushing circuit 4 and the second pushing circuit 5 and converts the positive and negative pulse voltage amplified by the pushing circuits into stable positive and negative voltage.
As a further embodiment of the present invention, the oscillation circuit 1 includes a first resistor 7, a second resistor 8, a first capacitor 9 and two CMOS inverters, wherein, one end of the second resistor 8 is connected between the two CMOS inverters through a wire, the other end is connected between the first resistor 7 and the first capacitor 9 through a wire, the first resistor 7 is connected with the first CMOS inverter 10, and the first capacitor 9 is connected with the second CMOS inverter 11 and is connected with the first inverter circuit 2 input end.
As a further embodiment of the present invention, the input terminal of the first inverter circuit 2 is connected to the output terminal of the oscillation circuit 1, the output terminal of the first inverter circuit 2 is connected to the input terminal of the second inverter circuit 3, and the first inverter circuit 2 and the second inverter circuit 3 are each formed by two parallel-connected CMOS inverters.
As a further embodiment of the present invention, the input of the first pushing circuit 4 is connected to the output of the first inverter circuit 2, the input of the second pushing circuit 5 is connected to the output of the second inverter circuit 3, and the first pushing circuit 4 and the second pushing circuit 5 are composed of two common collector amplifying circuits. The triode in the amplifying circuit is preferably a B647 triode 13, and the other is a D667 triode 12.
As a further embodiment of the present invention, the rectifying and filtering circuit 6 is a common circuit, and any circuit mode that plays a role of rectifying and filtering is suitable for this circuit.
The utility model discloses a theory of operation does: in the oscillating circuit, because the voltage of the two ends of the first capacitor 9 can not change suddenly when charging, the potential at the two end positions of the component in the circuit changes from high to low, the potential repeatedly changes to form oscillation, and the direct current voltage of the connected single power supply is converted into positive and negative pulse voltage, when the positive and negative pulse voltage passes through the first phase-reversing circuit 2, two CMOS phase inverters in the first phase-reversing circuit 2 output reversed pulse voltage, the output current is increased, and part of the pulse voltage output by one-time phase reversal directly passes through the first pushing circuit 4 for amplification and output; and a part of the pulse voltage passes through the second inverter circuit 3, the two CMOS inverters in the second inverter circuit 3 output the inverted pulse voltage again, the output current is increased, and the pulse voltage output by the second inversion is amplified and output by the second push circuit 5.
When the pulse voltage of the opposite phase outputted by the inverter circuit passes through the driving circuit, because each group of triodes is composed of a B647 triode 13 and a D667 triode 12, the D667 triode 12 amplifies the positive half cycle of the input pulse voltage, the B647 triode 13 amplifies the negative half cycle of the input pulse voltage, and the pulse voltage is synthesized to be the pulse voltage of current amplification (two to three hundred times), the pulse voltage of one opposite phase and the pulse voltage of two opposite phases can be respectively outputted from the first driving circuit 4 and the second driving circuit 5 to enter the rectifying and filtering circuit 6, and stable positive and negative voltages can be reached and outputted under the rectifying and filtering effects.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (4)
1. A single power supply switching positive and negative power supply circuit is characterized in that: which comprises the steps of preparing a mixture of a plurality of raw materials,
an oscillation circuit (1) for converting a direct-current voltage of a single power supply into a positive-negative pulse voltage;
the input end of the first inverter circuit (2) is connected to the pulse voltage output end of the oscillation circuit (1) to output the phase inversion of the pulse voltage, the input end of the second inverter circuit (3) is connected to the inversion output end of the first inverter circuit (2) to output the pulse voltage output in the inverted phase inversion again;
the first pushing circuit (4) is connected to the inverting output end of the first inverting circuit (2) and amplifies the pulse voltage output by the first inverting circuit (2); the second pushing circuit (5) is connected to the inverted output end of the second inverting circuit (3) and amplifies the pulse voltage which is inverted for the second time;
and the rectifying and filtering circuit (6) is respectively connected with the amplifying ends of the first pushing circuit (4) and the second pushing circuit (5) and converts the positive and negative pulse voltage amplified by the pushing circuits into stable positive and negative voltage.
2. The single power conversion positive-negative power supply circuit of claim 1, wherein: the oscillation circuit (1) comprises a first resistor (7), a second resistor (8), a first capacitor (9) and two CMOS inverters; wherein,
one end of the second resistor (8) is connected between the two CMOS inverters, the other end of the second resistor is connected between the first resistor (7) and the first capacitor (9), the first resistor (7) is connected with the first CMOS inverter (10), and the first capacitor (9) is connected with the second CMOS inverter (11) and is connected with the input end of the first inverter circuit (2).
3. The single power conversion positive-negative power supply circuit of claim 1, wherein: the first phase reversal circuit (2) and the second phase reversal circuit (3) are both composed of two CMOS inverters connected in parallel.
4. The single power conversion positive-negative power supply circuit of claim 1, wherein: the first pushing circuit (4) and the second pushing circuit (5) are both composed of two common collector amplifying circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200539305U CN202068345U (en) | 2011-03-03 | 2011-03-03 | Circuit capable of converting single power supply into positive and negative power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200539305U CN202068345U (en) | 2011-03-03 | 2011-03-03 | Circuit capable of converting single power supply into positive and negative power supplies |
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| Publication Number | Publication Date |
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| CN202068345U true CN202068345U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200539305U Expired - Fee Related CN202068345U (en) | 2011-03-03 | 2011-03-03 | Circuit capable of converting single power supply into positive and negative power supplies |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769379A (en) * | 2012-07-23 | 2012-11-07 | 孙坚 | Positive and negative voltage generation circuit applicable to silicon-on-insulator (SOI) process |
| CN103780084A (en) * | 2012-10-22 | 2014-05-07 | 中国地质科学院地质研究所 | Double-end-outputting bipolarity power supply |
| CN109245529A (en) * | 2018-10-24 | 2019-01-18 | 广州金升阳科技有限公司 | A kind of generating positive and negative voltage output power supply circuit |
-
2011
- 2011-03-03 CN CN2011200539305U patent/CN202068345U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769379A (en) * | 2012-07-23 | 2012-11-07 | 孙坚 | Positive and negative voltage generation circuit applicable to silicon-on-insulator (SOI) process |
| WO2014015768A1 (en) * | 2012-07-23 | 2014-01-30 | 广州慧智微电子有限公司 | Positive/negative voltage generation circuit in silicon-on-insulator process |
| CN102769379B (en) * | 2012-07-23 | 2015-04-15 | 广州慧智微电子有限公司 | Positive and negative voltage generation circuit applicable to silicon-on-insulator (SOI) process |
| CN103780084A (en) * | 2012-10-22 | 2014-05-07 | 中国地质科学院地质研究所 | Double-end-outputting bipolarity power supply |
| CN103780084B (en) * | 2012-10-22 | 2016-07-06 | 中国地质科学院地质研究所 | A kind of both-end output bipolar power supply |
| CN109245529A (en) * | 2018-10-24 | 2019-01-18 | 广州金升阳科技有限公司 | A kind of generating positive and negative voltage output power supply circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120303 |