CN104638921A - DC-DC conversion power supply circuit for data collector - Google Patents
DC-DC conversion power supply circuit for data collector Download PDFInfo
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- CN104638921A CN104638921A CN201310553987.5A CN201310553987A CN104638921A CN 104638921 A CN104638921 A CN 104638921A CN 201310553987 A CN201310553987 A CN 201310553987A CN 104638921 A CN104638921 A CN 104638921A
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- polar capacitor
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- negative pole
- positive pole
- rectifier diode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a DC-DC conversion power supply circuit for a data collector. The DC-DC conversion power supply circuit comprises a first rectifying diode, a second rectifying diode, a third rectifying diode, a fourth rectifying diode, a fifth rectifying diode, a first polar capacitor, a second polar capacitor, a third polar capacitor, a fourth polar capacitor, a fifth polar capacitor, a sixth polar capacitor, a seventh polar capacitor, an eighth polar capacitor, a ninth polar capacitor, a first resistor, a second resistor, a third resistor, an MC34063 chip, a non-polar capacitor, a voltage regulator diode, a switch transformer, a first inductor, a second inductor, a third inductor, a first linear voltage regulator and a second linear voltage regulator, the power supply circuit is isolated into two parts by the switch transformer, the second rectifying diode, the third rectifying diode, the fourth rectifying diode and the fifth rectifying diode form a rectifying circuit, and the fourth polar capacitor, the fifth polar capacitor, the sixth polar capacitor, the seventh polar capacitor, the eighth polar capacitor, the ninth polar capacitor, the second inductor, the third inductor, the first linear voltage regulator and the second linear regulator form a voltage regulating and filtering circuit. The DC-DC conversion power supply circuit adopts the switch transformer to obtain multiway direct-current output isolated from a direct-current power supply and a digital circuit power supply. By adopting the MC34063 chip, the power supply circuit is good in power supply stability, free of frame hopping, few in used elements, simple in circuit structure, reliable, practical and low in cost.
Description
Technical field
The present invention relates to a kind of power circuit for data acquisition unit, particularly relate to a kind of DC-DC converting power source circuit for data acquisition unit band isolation and amplifier.
Background technology
The circuit of data acquisition unit is the hybrid circuit of analog circuit based on microprocessor and digital circuit, needs many group DC power supply to power respectively for its digital circuits section and artificial circuit part.In order to obtain the good stability of a system and certainty of measurement, adopt multiple-output electric power.The circuit structure of general single converter multiple-output electric power is comparatively complicated, still higher for cost data acquisition unit so small-power miniature device, and data acquisition unit is comparatively meticulous the power supply of digital circuit and analog circuit need be kept apart.
Summary of the invention
Object of the present invention is just to provide a kind of DC-DC converting power source circuit for data acquisition unit band isolation and amplifier to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
DC-DC converting power source circuit for data acquisition unit of the present invention, comprise the first rectifier diode ~ the 5th rectifier diode, first polar capacitor ~ the 9th polar capacitor, first resistance ~ the 3rd resistance, MC34063 chip, polarity free capacitor, voltage stabilizing didoe, switch transformer, first inductance ~ the 3rd inductance, first linear voltage regulator and the second linear voltage regulator, the negative pole of described first rectifier diode is as the negative input of described power circuit, the positive pole of described first polar capacitor simultaneously with the power positive end of described MC34063 chip, the first end of described first resistance connects and as the electrode input end of described power circuit, second end of described first resistance places restrictions on sensor ends with the electric current of described MC34063 chip simultaneously, the driver collector terminal of described MC34063 chip, the switch collector terminal of described MC34063 chip connects, the switch emitter terminal of described MC34063 chip simultaneously with the negative pole of described voltage stabilizing didoe, the first input end of the primary coil of described switch transformer connects, the time capacitor end of described MC34063 chip is connected with the first end of described polarity free capacitor, the comparator inverting input of described MC34063 chip simultaneously with the first end of described second resistance, the first end of described 3rd resistance connects, second end of described 3rd resistance simultaneously with the positive pole of described second polar capacitor, second input of the primary coil of described switch transformer, the first end of described first inductance connects, second end of described first inductance is connected with the positive pole of described 3rd polar capacitor and as the first cathode output end of described power circuit, the positive pole of described first rectifier diode simultaneously with the negative pole of described first polar capacitor, second end of described second resistance, the power-of described MC34063 chip is extreme, second end of described polarity free capacitor, the positive pole of described voltage stabilizing didoe, the negative pole of described second polar capacitor, the negative pole of described 3rd polar capacitor connects and as the first cathode output end of described power circuit, first output of the secondary coil of described switch transformer simultaneously with the positive pole of described 4th rectifier diode, the negative pole of described 5th rectifier diode connects, second output of the secondary coil of described switch transformer simultaneously with the positive pole of described second rectifier diode, the negative pole of described 3rd rectifier diode connects, the negative pole of described second rectifier diode simultaneously with the negative pole of described 4th rectifier diode, the positive pole of described quadripolarity electric capacity, the first end of described second inductance connects, the positive pole of described 3rd rectifier diode simultaneously with the positive pole of described 5th rectifier diode, the negative pole of described 5th polar capacitor, the first end of described 3rd inductance connects, second end of described second inductance simultaneously with the positive pole of described 6th polar capacitor, the input of described first linear voltage regulator connects, second end of described 3rd inductance simultaneously with the negative pole of described 7th polar capacitor, the input of described second linear voltage regulator connects, the earth terminal of described first linear voltage regulator is connected with the earth terminal of described second linear voltage regulator, the centre tap end of the secondary coil of described switch transformer simultaneously with the negative pole of described quadripolarity electric capacity, the positive pole of described 5th polar capacitor, the negative pole of described 6th polar capacitor, the positive pole of described 7th polar capacitor, the negative pole of described 8th polar capacitor, the positive pole of described 9th polar capacitor connects and as the second cathode output end of described power circuit and the 3rd cathode output end, the output of described first linear voltage regulator is connected with the positive pole of described 8th polar capacitor and as the second cathode output end of described power circuit, the output of described second linear voltage regulator is connected with the negative pole of described 9th polar capacitor and as the 3rd cathode output end of described power circuit.
Beneficial effect of the present invention is:
DC-DC converting power source circuit for data acquisition unit of the present invention, adopts switch transformer, obtains the multi-channel DC of isolating with DC power supply, digital circuit power source and exports.Adopt MC34063 chip, this power circuit is powered good stability, and without frame hopping, use element few, simply, reliable and practical, cost is lower for circuit structure.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the DC-DC converting power source circuit for data acquisition unit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the DC-DC converting power source circuit for data acquisition unit of the present invention, comprises the first rectifier diode D1, second rectifier diode D2, 3rd rectifier diode D3, 4th rectifier diode D4, 5th rectifier diode D5, first polar capacitor C1, second polar capacitor C2, 3rd polar capacitor C3, quadripolarity electric capacity C4, 5th polar capacitor C5, 6th polar capacitor C6, 7th polar capacitor C7, 8th polar capacitor C8, 9th polar capacitor C9, first resistance R1, second resistance R2, 3rd resistance R3, MC34063 chip M, polarity free capacitor C0, voltage stabilizing didoe DI, switch transformer T, first inductance L 1, second inductance L 2, 3rd inductance L 3, the negative pole of the first linear voltage regulator W1 and the second linear voltage regulator W2, the first rectifier diode D1 as the negative input of power circuit, the positive pole of the first polar capacitor C1 simultaneously with the power positive end of MC34063 chip M, the first end of the first resistance R1 connects and as the electrode input end of power circuit, second end of the first resistance R1 places restrictions on sensor ends with the electric current of MC34063 chip M simultaneously, the driver collector terminal of MC34063 chip M, the switch collector terminal of MC34063 chip M connects, the switch emitter terminal of MC34063 chip M simultaneously with the negative pole of voltage stabilizing didoe DI, the first input end of the primary coil of switch transformer T connects, and the time capacitor end of MC34063 chip M is connected with the first end of polarity free capacitor C0, with the first end of the second resistance R2 while of the comparator inverting input of MC34063 chip M, the first end of the 3rd resistance R3 connects, second end of the 3rd resistance R3 simultaneously with the positive pole of the second polar capacitor C2, second input of the primary coil of switch transformer T, the first end of the first inductance L 1 connects, the second end of the first inductance L 1 be connected with the positive pole of the 3rd polar capacitor C3 and positive pole as the first cathode output end V1 of power circuit, the first rectifier diode D1 while with the negative pole of the first polar capacitor C1, second end of the second resistance R2, the power-of MC34063 chip M is extreme, second end of polarity free capacitor C0, the positive pole of voltage stabilizing didoe DI, the negative pole of the second polar capacitor C2, the negative pole of the 3rd polar capacitor C3 connects and as the first cathode output end of power circuit, the first output of the secondary coil of switch transformer T simultaneously with the positive pole of the 4th rectifier diode D4, the negative pole of the 5th rectifier diode D5 connects, the second output of the secondary coil of switch transformer T simultaneously with the positive pole of the second rectifier diode D2, the negative pole of the 3rd rectifier diode D3 connects, the negative pole of the second rectifier diode D2 simultaneously with the negative pole of the 4th rectifier diode D4, the positive pole of quadripolarity electric capacity C4, the first end of the second inductance L 2 connects, the positive pole of the 3rd rectifier diode D3 simultaneously with the positive pole of the 5th rectifier diode D5, the negative pole of the 5th polar capacitor C5, the first end of the 3rd inductance L 3 connects, the second end of the second inductance L 2 simultaneously with the positive pole of the 6th polar capacitor C6, the input of the first linear voltage regulator W1 connects, the second end of the 3rd inductance L 3 simultaneously with the negative pole of the 7th polar capacitor C7, the input of the second linear voltage regulator W2 connects, and the earth terminal of the first linear voltage regulator W1 is connected with the earth terminal of the second linear voltage regulator W2, with the negative pole of quadripolarity electric capacity C4 while of the centre tap end of the secondary coil of switch transformer T, the positive pole of the 5th polar capacitor C5, the negative pole of the 6th polar capacitor C6, the positive pole of the 7th polar capacitor C7, the negative pole of the 8th polar capacitor C8, the positive pole of the 9th polar capacitor C9 connects and as the second cathode output end of power circuit and the 3rd cathode output end, the output of the first linear voltage regulator W1 is connected with the positive pole of the 8th polar capacitor C8 and as the second cathode output end V2 of power circuit, and the output of the second linear voltage regulator W2 is connected with the negative pole of the 9th polar capacitor C9 and as the 3rd cathode output end V3 of power circuit.
DC-DC power source circuit for data acquisition unit of the present invention, adopts switch transformer T, obtains to export the second direct current that V1 isolates with DC power supply Ui and the first direct current and export V2 and the 3rd direct current exports V3.Adopt MC34063 chip M, this power circuit is powered good stability, without frame hopping, reliable and practical.
Claims (1)
1. the DC-DC converting power source circuit for data acquisition unit, it is characterized in that: comprise the first rectifier diode ~ the 5th rectifier diode, first polar capacitor ~ the 9th polar capacitor, first resistance ~ the 3rd resistance, MC34063 chip, polarity free capacitor, voltage stabilizing didoe, switch transformer, first inductance ~ the 3rd inductance, first linear voltage regulator and the second linear voltage regulator, the negative pole of described first rectifier diode is as the negative input of described power circuit, the positive pole of described first polar capacitor simultaneously with the power positive end of described MC34063 chip, the first end of described first resistance connects and as the electrode input end of described power circuit, second end of described first resistance places restrictions on sensor ends with the electric current of described MC34063 chip simultaneously, the driver collector terminal of described MC34063 chip, the switch collector terminal of described MC34063 chip connects, the switch emitter terminal of described MC34063 chip simultaneously with the negative pole of described voltage stabilizing didoe, the first input end of the primary coil of described switch transformer connects, the time capacitor end of described MC34063 chip is connected with the first end of described polarity free capacitor, the comparator inverting input of described MC34063 chip simultaneously with the first end of described second resistance, the first end of described 3rd resistance connects, second end of described 3rd resistance simultaneously with the positive pole of described second polar capacitor, second input of the primary coil of described switch transformer, the first end of described first inductance connects, second end of described first inductance is connected with the positive pole of described 3rd polar capacitor and as the first cathode output end of described power circuit, the positive pole of described first rectifier diode simultaneously with the negative pole of described first polar capacitor, second end of described second resistance, the power-of described MC34063 chip is extreme, second end of described polarity free capacitor, the positive pole of described voltage stabilizing didoe, the negative pole of described second polar capacitor, the negative pole of described 3rd polar capacitor connects and as the first cathode output end of described power circuit, first output of the secondary coil of described switch transformer simultaneously with the positive pole of described 4th rectifier diode, the negative pole of described 5th rectifier diode connects, second output of the secondary coil of described switch transformer simultaneously with the positive pole of described second rectifier diode, the negative pole of described 3rd rectifier diode connects, the negative pole of described second rectifier diode simultaneously with the negative pole of described 4th rectifier diode, the positive pole of described quadripolarity electric capacity, the first end of described second inductance connects, the positive pole of described 3rd rectifier diode simultaneously with the positive pole of described 5th rectifier diode, the negative pole of described 5th polar capacitor, the first end of described 3rd inductance connects, second end of described second inductance simultaneously with the positive pole of described 6th polar capacitor, the input of described first linear voltage regulator connects, second end of described 3rd inductance simultaneously with the negative pole of described 7th polar capacitor, the input of described second linear voltage regulator connects, the earth terminal of described first linear voltage regulator is connected with the earth terminal of described second linear voltage regulator, the centre tap end of the secondary coil of described switch transformer simultaneously with the negative pole of described quadripolarity electric capacity, the positive pole of described 5th polar capacitor, the negative pole of described 6th polar capacitor, the positive pole of described 7th polar capacitor, the negative pole of described 8th polar capacitor, the positive pole of described 9th polar capacitor connects and as the second cathode output end of described power circuit and the 3rd cathode output end, the output of described first linear voltage regulator is connected with the positive pole of described 8th polar capacitor and as the second cathode output end of described power circuit, the output of described second linear voltage regulator is connected with the negative pole of described 9th polar capacitor and as the 3rd cathode output end of described power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310553987.5A CN104638921A (en) | 2013-11-08 | 2013-11-08 | DC-DC conversion power supply circuit for data collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310553987.5A CN104638921A (en) | 2013-11-08 | 2013-11-08 | DC-DC conversion power supply circuit for data collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104638921A true CN104638921A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310553987.5A Pending CN104638921A (en) | 2013-11-08 | 2013-11-08 | DC-DC conversion power supply circuit for data collector |
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| Country | Link |
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| CN (1) | CN104638921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383258A (en) * | 2016-08-31 | 2017-02-08 | 苏州迈力电器有限公司 | Voltage isolated sampling circuit |
| CN109194139A (en) * | 2018-09-27 | 2019-01-11 | 威创集团股份有限公司 | Power supply circuit and processor system is isolated in DC voltage |
-
2013
- 2013-11-08 CN CN201310553987.5A patent/CN104638921A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383258A (en) * | 2016-08-31 | 2017-02-08 | 苏州迈力电器有限公司 | Voltage isolated sampling circuit |
| CN106383258B (en) * | 2016-08-31 | 2019-05-07 | 苏州迈力电器有限公司 | Sample circuit is isolated in voltage |
| CN109194139A (en) * | 2018-09-27 | 2019-01-11 | 威创集团股份有限公司 | Power supply circuit and processor system is isolated in DC voltage |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |