CN218678864U - Small-size separately-excited high-voltage generating circuit - Google Patents
Small-size separately-excited high-voltage generating circuit Download PDFInfo
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- CN218678864U CN218678864U CN202223232029.1U CN202223232029U CN218678864U CN 218678864 U CN218678864 U CN 218678864U CN 202223232029 U CN202223232029 U CN 202223232029U CN 218678864 U CN218678864 U CN 218678864U
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Abstract
The utility model relates to a high voltage generator technical field, specifically speaking relates to a small-size separately excited high voltage generating circuit, including vibrating module and boost module, vibrate the module and include singlechip and oscillating circuit, the boost module includes sensing circuit and multiplier circuit, and oscillating circuit is arranged in acting as the vibration source in the circuit, provides high frequency power for sensing circuit, and the singlechip is used for controlling oscillating circuit's oscillation frequency, and sensing circuit is used for producing the high voltage direct current, and multiplier circuit is used for rising output voltage. The utility model discloses in adopt the magnetic core of opening a way to replace traditional direct current boost circuit's closed magnetic core, can reduce the volume of product, single chip microcomputer control oscillation circuit produces the high frequency alternating current as the independent shock source in the circuit, and the response circuit passes through electromagnetic induction's mode output high voltage direct current to carry out many times pressure boost to the high voltage direct current of output by multiplier circuit.
Description
Technical Field
The utility model relates to a high voltage generator technical field, specifically speaking relates to a small-size separately swash formula high voltage generating circuit.
Background
The high voltage generator, also called as DC high voltage generator, raises the AC voltage input by transformer by hundreds of times, and then the AC voltage is rectified to be used as a high voltage power supply to provide a DC high voltage power supply for electric loads.
The high-voltage generator comprises a plurality of circuits such as an overvoltage and overcurrent protection circuit, a power protection circuit, a step-up and step-down circuit and the like, and in the traditional direct-current high-voltage generator, the step-up and step-down circuit generally utilizes a closed-circuit magnetic core as a coil to boost voltage, so that the product has a larger volume, occupies more space and is inconvenient to carry and transport, and therefore, the small separately excited high-voltage generator is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a small-size separately excited formula high voltage generating circuit to solve the problem that proposes in the above-mentioned background art.
In order to realize the above object, the utility model provides a small-size separately excited high voltage generating circuit, including vibrating module and boost module, the vibration module includes singlechip and oscillating circuit, the boost module includes induction circuit and multiplier circuit, the singlechip with the oscillating circuit both way junction, the oscillating circuit is connected induction circuit, induction circuit connects multiplier circuit, wherein, oscillating circuit is arranged in acting as the vibration source in the circuit, for induction circuit provides high frequency power supply, the singlechip is used for control the oscillation frequency of oscillating circuit, induction circuit is used for producing high voltage direct current, multiplier circuit is used for rising output voltage.
As a further improvement of the present technical solution, the oscillator circuit includes capacitors Ca, cb, and resistors Ra, rb, wherein,
the No. 1 pin of the single chip microcomputer is grounded;
the pin 2 of the singlechip is connected with the pin 6 and is connected with the resistors Ra and Rb and the capacitor Ca in parallel, and the capacitor Ca is grounded;
the pin 3 of the singlechip is connected with the other end of the resistor Ra and connected with the Vo end in parallel;
the pin 4 of the singlechip is connected with the pin 8 and is connected with a Vcc end in parallel;
the No. 5 pin of the single chip microcomputer is connected with the capacitor Cb, and the capacitor Cb is grounded;
and the No. 7 pin of the singlechip is connected with the other end of the resistor Rb.
As a further improvement of the present technical solution, the sensing circuit includes a transistor Q1, a transformer T and a resistor R1, wherein,
one end of a first secondary winding of the transformer T is connected with the triode Q1, and the other end of the first secondary winding of the transformer T is connected with a Vcc end;
one end of a second secondary winding of the transformer T is connected with the resistor R1, and the other end of the second secondary winding of the transformer T is connected with the triode Q1 and the Vo end;
the base electrode of the triode Q1 is connected with the other end of the resistor R1.
As a further improvement of the present technical solution, the transformer T is an integrated line output transformer.
As a further improvement of the present technical solution, the multiplying circuit comprises diodes D1, D2, D3, D4, D5, capacitors C1, C2, C3, C4, C5, wherein,
one end of the diode D1 is connected with the capacitors C1 and C2 and connected with the diode D2, the other end of the diode D1 is connected with the capacitors C4 and Vout and connected with one end of a main winding of the transformer T, and the capacitor C1 is connected with the other end of the main winding of the transformer T;
the capacitor C4 is connected with the capacitor C5, the diode D3 is connected with the other end of the diode D2 in parallel, and the capacitor C2 is connected with the capacitor C3, the diode D4 is connected with the other end of the diode D3 in parallel;
the diode D4 is connected with the diode D5 and connected with the other end of the capacitor C5 in parallel, and the diode D5 is connected with the capacitor C3 and connected with the Vout end in parallel.
Compared with the prior art, the beneficial effects of the utility model are that:
in the small separately excited high-voltage generating circuit, an open-circuit magnetic core is adopted to replace a closed-circuit magnetic core of a traditional direct-current booster circuit, the size of a product can be reduced, the single chip microcomputer controls the oscillating circuit to serve as an independent oscillating source in the circuit to generate high-frequency alternating current, the inductive circuit outputs high-voltage direct current in an electromagnetic induction mode, and the multiplying circuit boosts the output high-voltage direct current in multiple times.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a circuit diagram of the oscillation module of the present invention;
fig. 3 is a diagram of the induction circuit of the present invention;
fig. 4 is a circuit diagram of the multiplication circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Please refer to fig. 1-4, this embodiment provides a small-sized separately excited high voltage generating circuit, which includes an oscillating module and a boosting module, the oscillating module includes a single chip and an oscillating circuit, the boosting module includes an induction circuit and a multiplying circuit, the single chip is connected to the oscillating circuit in two directions, the oscillating circuit is connected to the induction circuit, the induction circuit is connected to the multiplying circuit, wherein the oscillating circuit is used as an oscillating source in the circuit, a high frequency power is provided for the induction circuit, the single chip is used for controlling the oscillating frequency of the oscillating circuit, the induction circuit is used for generating high voltage direct current, and the multiplying circuit is used for boosting the output voltage.
The single chip microcomputer controls the oscillation circuit to start oscillation so as to obtain higher oscillation frequency, the oscillation circuit is used as an independent oscillation source in the circuit to generate high-frequency alternating current oscillation, the induction circuit outputs high-voltage direct current in an electromagnetic induction mode, and the multiplication circuit performs multiple pressurization on the output high-voltage direct current.
In the utility model, in order to control the oscillation frequency, the oscillation circuit comprises capacitors Ca and Cb, resistors Ra and Rb, wherein,
the No. 1 pin of the singlechip is grounded;
the pin 2 of the singlechip is connected with the pin 6 and is connected with the resistors Ra and Rb and the capacitor Ca in parallel, and the capacitor Ca is grounded;
the No. 3 pin of the singlechip is connected with the other end of the resistor Ra and connected with the Vo end;
the pin 4 of the singlechip is connected with the pin 8 and is connected with a Vcc end in parallel;
the No. 5 pin of the singlechip is connected with a capacitor Cb, and the capacitor Cb is grounded;
the No. 7 pin of the singlechip is connected with the other end of the resistor Rb.
The single chip microcomputer is a 555 type single chip microcomputer, the oscillation circuit generates a vibration frequency in an inductor and a capacitor through an RC oscillation loop formed by a capacitor and a resistor, so that electric energy and magnetic energy values have maximum values and minimum values, the maximum values and the minimum values are alternately changed to generate a vibration current, the oscillation circuit is connected through an interruption port of the single chip microcomputer to carry out frequency change detection, the number of pulse signals in a period of time is counted, and the single chip microcomputer judges frequency change and outputs corresponding high and low levels to control the oscillation frequency of the oscillation circuit.
In order to convert the high-frequency oscillation current into high-voltage direct current, the induction circuit comprises a triode Q1, a transformer T and a resistor R1, wherein,
one end of a first secondary winding of the transformer T is connected with the triode Q1, and the other end of the first secondary winding of the transformer T is connected with a Vcc end;
one end of a second secondary winding of the transformer T is connected with the resistor R1, and the other end of the second secondary winding of the transformer T is connected with the triode Q1 and the Vo end;
the base of the triode Q1 is connected with the other end of the resistor R1.
The induction circuit can convert low 220V alternating current into high-voltage direct current in an electromagnetic induction mode through the conduction and the cutoff of the transformer T and the triode Q1.
In order to reduce the volume and ensure the stable output of direct current high voltage, the transformer T is an integrated line output transformer which is an open-circuit magnetic core consisting of a soft magnetic ferrite magnetic core and a coil, a low-voltage winding, a high-voltage winding and the like are assembled and sealed in a shell, and the shell cannot be disassembled.
In order to filter and boost the current output by the sensing circuit, the multiplying circuit comprises diodes D1, D2, D3, D4, D5, capacitors C1, C2, C3, C4, C5, wherein,
one end of the diode D1 is connected with the capacitors C1 and C2 and connected with the diode D2 in parallel, the other end of the diode D1 is connected with the capacitors C4 and Vout and connected with one end of the primary winding of the transformer T in parallel, and the capacitor C1 is connected with the other end of the primary winding of the transformer T;
the capacitor C4 is connected with the capacitor C5, the diode D3 is connected with the other end of the diode D2 in parallel, and the capacitor C2 is connected with the capacitor C3, the diode D4 is connected with the other end of the diode D3 in parallel;
the diode D4 is connected with the diode D5 and connected with the other end of the capacitor C5 in parallel, and the diode D5 is connected with the capacitor C3 and connected with the Vout end in parallel.
The multiplier circuit mainly utilizes the one-way conduction characteristic that a diode is equivalent to a switch and the characteristic that the voltage at two ends of a capacitor can not change suddenly and can store energy, so that the energy is gradually transmitted to a later stage, meanwhile, the voltage on a line is gradually increased, and the diode in the circuit can also carry out filtering rectification on input current, thereby outputting stable and smooth high-voltage direct current.
In the embodiment, when the small separately excited high-voltage generating circuit is used specifically, the single chip microcomputer counts the number of pulse signals in a period of time through the fractures, judges frequency change and outputs corresponding high and low levels to control the oscillation frequency of the oscillation circuit, controls the oscillation circuit to start oscillation to serve as an independent oscillation source in the circuit, adopts the conduction and the cut-off of the transformer T and the triode Q1 after the induction circuit receives high-frequency alternating current, can convert lower 220V alternating current into high-voltage direct current in an electromagnetic induction mode, performs filtering rectification and multiple pressurization on the input direct current through the one-way conduction characteristic of diodes of the multiplying circuit and the characteristic of capacitance storage energy to generate stable and smooth high-voltage direct current, and can reduce the volume of a product by adopting an open-circuit magnetic core to replace a closed-circuit magnetic core in a traditional direct-current boosting circuit and improve the boosting efficiency of coil high voltage through the corresponding multiplying circuit.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A small-size separately excited high voltage generating circuit which characterized in that: including vibrating module and boost module, vibrate the module and include singlechip and oscillating circuit, the boost module includes induction circuit and multiplier circuit, the singlechip with oscillating circuit both way junction, the oscillating circuit is connected induction circuit, induction circuit connects multiplier circuit, wherein, oscillating circuit is arranged in acting as the vibration source in the circuit, for induction circuit provides high frequency power, the singlechip is used for controlling oscillating circuit's oscillation frequency, induction circuit is used for producing high voltage direct current, multiplier circuit is used for rising output voltage.
2. A small separately excited high voltage generating circuit according to claim 1, wherein: the oscillating circuit comprises capacitors Ca and Cb and resistors Ra and Rb, wherein,
the No. 1 pin of the single chip microcomputer is grounded;
the pin 2 of the singlechip is connected with the pin 6 and is connected with the resistors Ra and Rb and the capacitor Ca in parallel, and the capacitor Ca is grounded;
the pin 3 of the singlechip is connected with the other end of the resistor Ra and connected with the Vo end in parallel;
the pin 4 of the singlechip is connected with the pin 8 and is connected with a Vcc end in parallel;
the No. 5 pin of the single chip microcomputer is connected with the capacitor Cb, and the capacitor Cb is grounded;
and the No. 7 pin of the singlechip is connected with the other end of the resistor Rb.
3. A small separately excited high voltage generating circuit according to claim 2, wherein: the sensing circuit comprises a triode Q1, a transformer T and a resistor R1, wherein,
one end of a first secondary winding of the transformer T is connected with the triode Q1, and the other end of the first secondary winding of the transformer T is connected with a Vcc end;
one end of a second secondary winding of the transformer T is connected with the resistor R1, and the other end of the second secondary winding of the transformer T is connected with the triode Q1 and the Vo end;
the base electrode of the triode Q1 is connected with the other end of the resistor R1.
4. A small separately excited high voltage generation circuit according to claim 3, wherein: the transformer T is an integrated line output transformer.
5. A small separately excited high voltage generation circuit according to claim 3, wherein: the multiplier circuit comprises diodes D1, D2, D3, D4, D5, capacitors C1, C2, C3, C4, C5, wherein,
one end of the diode D1 is connected with the capacitors C1 and C2 and connected with the diode D2, the other end of the diode D1 is connected with the capacitors C4 and Vout and connected with one end of a main winding of the transformer T, and the capacitor C1 is connected with the other end of the main winding of the transformer T;
the capacitor C4 is connected with the capacitor C5, the diode D3 is connected with the other end of the diode D2 in parallel, and the capacitor C2 is connected with the capacitor C3, the diode D4 is connected with the other end of the diode D3 in parallel;
the diode D4 is connected with the diode D5 and connected with the other end of the capacitor C5 in parallel, and the diode D5 is connected with the capacitor C3 and connected with the Vout end in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223232029.1U CN218678864U (en) | 2022-12-04 | 2022-12-04 | Small-size separately-excited high-voltage generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223232029.1U CN218678864U (en) | 2022-12-04 | 2022-12-04 | Small-size separately-excited high-voltage generating circuit |
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| Publication Number | Publication Date |
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| CN218678864U true CN218678864U (en) | 2023-03-21 |
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| CN202223232029.1U Active CN218678864U (en) | 2022-12-04 | 2022-12-04 | Small-size separately-excited high-voltage generating circuit |
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| CN (1) | CN218678864U (en) |
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- 2022-12-04 CN CN202223232029.1U patent/CN218678864U/en active Active
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