CN220359037U - Voltage device with adjustable amplitude and frequency and switchable positive and negative voltages - Google Patents
Voltage device with adjustable amplitude and frequency and switchable positive and negative voltages Download PDFInfo
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- CN220359037U CN220359037U CN202322017669.9U CN202322017669U CN220359037U CN 220359037 U CN220359037 U CN 220359037U CN 202322017669 U CN202322017669 U CN 202322017669U CN 220359037 U CN220359037 U CN 220359037U
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- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 238000011084 recovery Methods 0.000 claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 3
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model relates to a voltage device with adjustable amplitude and frequency and switchable positive and negative voltage, which comprises a direct current power supply, an energy storage capacitor, a power inductor, a control chip, a high-voltage MOS (metal oxide semiconductor) tube, a coupling capacitor, a first fast recovery diode, a second fast recovery diode, a third fast recovery diode, a voltage regulating rheostat, a first filter capacitor, a second filter capacitor, a current detection resistor, a programming chip, a first optical switch, a second optical switch and a load resistor; the voltage device realized by the technical scheme provided by the utility model has the advantages of small whole volume, simple structure, low realization cost, simple control, adjustable output voltage, adjustable pulse width and adjustable frequency, and realizes that the positive voltage and the negative voltage are output at the same port.
Description
Technical Field
The utility model belongs to the technical field of voltage regulation and control, and particularly relates to a voltage device with adjustable amplitude and frequency and switchable positive and negative voltages.
Background
The DC-DC conversion technology is widely applied to the fields of remote and data communication, computers, office automation equipment, industrial instruments, military, aerospace and the like, and relates to various industries of national economy; the essence is an electronic circuit that takes voltage from a dc power supply and converts the electrical energy of one voltage value into electrical energy of another voltage value, by which the resulting electrical energy can be used to power various dc power supplies as required, ranging from a few volts to very high transmission voltages. However, the conventional DC-DC conversion mode for implementing positive and negative voltage output mainly includes flyback converter, double flyback converter, buck-boost converter with reverse phase output, double output transformer, etc., and the above implementation mode has many disadvantages, such as large power supply volume, complex structure, difficult control, transformer loss, heat generation, difficult electromagnetic compatibility design, high cost, etc. Therefore, research is required to address the above problems.
Disclosure of Invention
In order to solve one of the above technical drawbacks, the present utility model provides a voltage device with adjustable amplitude and frequency and switchable positive and negative voltages.
In order to solve the technical problems, the utility model adopts the technical scheme that the voltage device with adjustable amplitude and frequency and switchable positive and negative voltage comprises a direct current power supply, an energy storage capacitor, a power inductor, a control chip, a high-voltage MOS (metal oxide semiconductor) tube, a coupling capacitor, a first fast recovery diode, a second fast recovery diode, a third fast recovery diode, a voltage regulating rheostat, a first filter capacitor, a second filter capacitor, a current detection resistor, a programming chip, a first optical switch, a second optical switch and a load resistor;
the positive electrode of the direct current power supply is connected with one end of the power inductor, one end of the energy storage capacitor, the No. 2 pin of the control chip and the No. 2 pin of the programming chip, and the negative electrode of the direct current power supply is connected with the other end of the energy storage capacitor, the No. 4 pin of the control chip, the No. 4 pin of the programming chip, the output end of the voltage regulating rheostat, the No. 5 pin, the No. 6 pin and the No. 7 pin of the control chip and then grounded; the other end of the power inductor is connected with the drain electrode of the high-voltage MOS tube, the anode of the first fast recovery diode and one end of the coupling capacitor, the other end of the coupling capacitor is connected with the anode of the second fast recovery diode and the cathode of the third fast recovery diode, and the anode of the third fast recovery diode is connected with one end of the second filter capacitor and the input end of the second optical switch; the other end of the second filter capacitor is connected with the cathode of the second fast recovery diode and then grounded; the cathode of the first fast recovery diode is connected with one end of the first filter capacitor, the input end of the first optical switch and the input end of the voltage regulating rheostat, and the other end of the first filter capacitor is grounded; the grid electrode of the high-voltage MOS tube is connected with the No. 1 pin of the control chip, the source electrode of the high-voltage MOS tube is connected with the No. 8 pin of the control chip and one end of the current detection resistor, and the other end of the current detection resistor is grounded; the control chip is characterized in that the No. 3 pin of the control chip is connected with the adjusting end of the voltage regulating rheostat, the No. 4 pin of the programming chip is grounded, the No. 8 pin of the programming chip is connected with the signal end of the first optical switch, the No. 7 pin of the programming chip is connected with the signal end of the second optical switch, the output end of the first optical switch and the output end of the second optical switch are connected with one end of the load resistor after being connected in parallel, and the other end of the load resistor is grounded.
Compared with the prior art, the voltage device with adjustable amplitude and frequency and switchable positive and negative voltage has the following advantages: the voltage device realized by the technical scheme provided by the utility model has the advantages of small whole volume, simple structure, low realization cost, simple control, adjustable output voltage, adjustable pulse width and adjustable frequency, and realizes that the positive voltage and the negative voltage are output at the same port.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings;
FIG. 1 is a schematic diagram of a circuit structure of the present utility model;
in the figure: 21 is a direct current power supply, 22 is an energy storage capacitor, 23 is a power inductor, 24 is a control chip, 25 is a high-voltage MOS tube, 26 is a coupling capacitor, 271 is a first fast recovery diode, 272 is a second fast recovery diode, 273 is a third fast recovery diode, 28 is a voltage regulating rheostat, 291 is a first filter capacitor, 292 is a second filter capacitor, 30 is a current detection resistor, 31 is a programming chip, 321 is a first optical switch, 322 is a second optical switch, and 33 is a load resistor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the voltage device with adjustable amplitude, frequency and switchable positive and negative voltages of the present utility model includes a dc power supply 21, an energy storage capacitor 22, a power inductor 23, a control chip 24, a high voltage MOS transistor 25, a coupling capacitor 26, a first fast recovery diode 271, a second fast recovery diode 272, a third fast recovery diode 273, a varistor 28, a first filter capacitor 291, a second filter capacitor 292, a current detection resistor 30, a programming chip 31, a first optical switch 321, a second optical switch 322, and a load resistor 33;
the positive pole of the direct current power supply 21 is connected with one end of the power inductor 23, one end of the energy storage capacitor 22, the No. 2 pin of the control chip 24 and the No. 2 pin of the programming chip 31, and the negative pole of the direct current power supply 21 is connected with the other end of the energy storage capacitor 22, the No. 4 pin of the control chip 24, the No. 4 pin of the programming chip 31, the output end of the voltage regulating rheostat 28, the No. 5 pin, the No. 6 pin and the No. 7 pin of the control chip 24 and then grounded; the other end of the power inductor 23 is connected to the drain electrode of the high-voltage MOS transistor 25, the anode of the first fast recovery diode 271, and one end of the coupling capacitor 26, the other end of the coupling capacitor 26 is connected to the anode of the second fast recovery diode 272, and the cathode of the third fast recovery diode 273, and the anode of the third fast recovery diode 273 is connected to one end of the second filter capacitor 292 and the input end of the second optical switch 322; the other end of the second filter capacitor 292 is connected to the cathode of the second fast recovery diode 272 and then grounded; the cathode of the first fast recovery diode 271 is connected with one end of the first filter capacitor 291, the input end of the first optical switch 321 and the input end of the voltage regulating rheostat 28, and the other end of the first filter capacitor 291 is grounded; the grid electrode of the high-voltage MOS tube 25 is connected with the No. 1 pin of the control chip 24, the source electrode of the high-voltage MOS tube 25 is connected with the No. 8 pin of the control chip 24 and one end of the current detection resistor 30, and the other end of the current detection resistor 30 is grounded; the pin 3 of the control chip 24 is connected with the adjusting end of the voltage regulating rheostat 28, the pin 4 of the programming chip 31 is grounded, the pin 8 of the programming chip 31 is connected with the signal end of the first optical switch 321, the pin 7 of the programming chip 31 is connected with the signal end of the second optical switch 322, the output end of the first optical switch 321 and the output end of the second optical switch 322 are connected in parallel and then connected with one end of the load resistor 33, and the other end of the load resistor 33 is grounded.
The control chip 24 is of the model number MAX1771.
The programming chip 31 is a single chip microcomputer with the model number of STC8G1K 08.
The specific functions of the electronic components adopted in the scheme provided by the utility model are as follows:
the direct current power supply 21 is generated by AC-DC conversion by using commercial power and provides power supply for the whole circuit.
The energy storage capacitor 22 is an electric field energy compression element, filters the direct current power supply 21, and can store and compress energy to provide instantaneous heavy current for the circuit to realize a boosting function.
The power inductor 23 stores magnetic field energy after the high-voltage MOS tube 25 is conducted, and releases the magnetic field energy to generate instantaneous high voltage after the high-voltage MOS tube 25 is cut off, and the power inductor is matched with a fast recovery diode and a filter capacitor to obtain required direct current voltage after rectification and filtration.
The control chip 24 controls the high-voltage MOS transistor 25 to be turned on and off, and collects the voltage value of the current detection resistor 30 to adjust the working frequency and the duty ratio so as to realize stable voltage output.
The coupling capacitor 26 is matched with a fast recovery diode and a filter capacitor to realize negative voltage output of the circuit by utilizing the principle that the voltage of a capacitor end cannot be suddenly changed.
The first fast recovery diode 271, the second fast recovery diode 272, and the third fast recovery diode 273 can work at high frequency and form a voltage doubling rectifying circuit with the filter capacitor to realize a voltage output function.
The voltage-regulating rheostat 28 realizes circuit voltage-regulating output through resistance value adjustment.
The first filter capacitor 291 and the second filter capacitor 292 are used for smoothing the pulsating voltage boosted by the circuit to obtain positive and negative direct current voltages.
The current detection resistor 30 selects a milliohm precision sampling resistor, converts a current signal into a voltage signal, and feeds the voltage signal back to the control chip 24 to adjust the output voltage.
The programming chip 31 is pre-programmed with a programming code with a preset duty cycle and frequency for controlling the first optical switch 321 and the second optical switch 322 to switch between positive and negative voltages.
The first optical switch 321 and the second optical switch 322 are used as relay switch functions, and have no attraction loss in operation, long service life and reliable operation.
The load resistor 33 is used as a dummy load function, and can not only stabilize the operation of the whole circuit, but also discharge.
The working principle of the utility model is as follows:
the positive pole of the direct current power supply 21 is connected with the energy storage capacitor 22 to charge the positive pole of the direct current power supply, the positive pole of the energy storage capacitor 22 is respectively connected with the control chip 24 and the power end of the programming chip 31 to supply power, and is connected with one end of the power inductor 23, the control chip 24 adjusts the internal working frequency according to the parameter setting of the current detection resistor 30 and the voltage regulating rheostat 28 to output PWM signals to control the high-voltage MOS tube 25 to work at the 1 pin of the high-voltage MOS tube, the BOOST principle is adopted to generate high-frequency pulse signals at the right end of the power inductor 23, the positive voltage output is obtained through the rectification and the filtration of the first fast recovery diode 271 and the first filter capacitor 291, the negative voltage output is obtained through the rectification and the filtration of the coupling capacitor 26, the second fast recovery diode 272, the third fast recovery diode 273 and the second filter capacitor 292, and finally the first optical switch 321 and the second optical switch 322 are controlled by the programming chip 31 to be conducted in a complementary mode on the load resistor 33 to output positive voltage and negative voltage.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (3)
1. The utility model provides a voltage device that amplitude, frequency are adjustable and positive negative pressure is changeable which characterized in that: the high-voltage power supply comprises a direct-current power supply (21), an energy storage capacitor (22), a power inductor (23), a control chip (24), a high-voltage MOS (metal oxide semiconductor) tube (25), a coupling capacitor (26), a first fast recovery diode (271), a second fast recovery diode (272), a third fast recovery diode (273), a voltage regulating rheostat (28), a first filter capacitor (291), a second filter capacitor (292), a current detection resistor (30), a programming chip (31), a first optical switch (321), a second optical switch (322) and a load resistor (33);
the positive electrode of the direct current power supply (21) is connected with one end of the power inductor (23), one end of the energy storage capacitor (22), a No. 2 pin of the control chip (24) and a No. 2 pin of the programming chip (31), and the negative electrode of the direct current power supply (21) is connected with the other end of the energy storage capacitor (22), a No. 4 pin of the control chip (24), a No. 4 pin of the programming chip (31), the output end of the voltage regulating rheostat (28), a No. 5 pin, a No. 6 pin and a No. 7 pin of the control chip (24) and then grounded; the other end of the power inductor (23) is connected with the drain electrode of the high-voltage MOS tube (25), the anode of the first fast recovery diode (271) and one end of the coupling capacitor (26), the other end of the coupling capacitor (26) is connected with the anode of the second fast recovery diode (272) and the cathode of the third fast recovery diode (273), and the anode of the third fast recovery diode (273) is connected with one end of the second filter capacitor (292) and the input end of the second optical switch (322); the other end of the second filter capacitor (292) is connected with the cathode of the second fast recovery diode (272) and then grounded; the cathode of the first fast recovery diode (271) is connected with one end of a first filter capacitor (291), the input end of the first optical switch (321) and the input end of the voltage regulating rheostat (28), and the other end of the first filter capacitor (291) is grounded; the grid electrode of the high-voltage MOS tube (25) is connected with a No. 1 pin of the control chip (24), the source electrode of the high-voltage MOS tube (25) is connected with a No. 8 pin of the control chip (24) and one end of the current detection resistor (30), and the other end of the current detection resistor (30) is grounded; the control chip (24) is characterized in that a No. 3 pin of the control chip (24) is connected with an adjusting end of the voltage regulating rheostat (28), a No. 4 pin of the programming chip (31) is grounded, a No. 8 pin of the programming chip (31) is connected with a signal end of the first optical switch (321), a No. 7 pin of the programming chip (31) is connected with a signal end of the second optical switch (322), an output end of the first optical switch (321) and an output end of the second optical switch (322) are connected in parallel and then connected with one end of the load resistor (33), and the other end of the load resistor (33) is grounded.
2. The amplitude, frequency tunable and positive-negative voltage switchable voltage device of claim 1, wherein: the control chip (24) adopts a model number of MAX1771.
3. The amplitude, frequency tunable and positive-negative voltage switchable voltage device of claim 1, wherein: the programming chip (31) adopts a singlechip with the model of STC8G1K 08.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322017669.9U CN220359037U (en) | 2023-07-31 | 2023-07-31 | Voltage device with adjustable amplitude and frequency and switchable positive and negative voltages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322017669.9U CN220359037U (en) | 2023-07-31 | 2023-07-31 | Voltage device with adjustable amplitude and frequency and switchable positive and negative voltages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220359037U true CN220359037U (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322017669.9U Active CN220359037U (en) | 2023-07-31 | 2023-07-31 | Voltage device with adjustable amplitude and frequency and switchable positive and negative voltages |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220359037U (en) |
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2023
- 2023-07-31 CN CN202322017669.9U patent/CN220359037U/en active Active
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