CN218633730U - High-power rectifier bridge power-taking circuit - Google Patents
High-power rectifier bridge power-taking circuit Download PDFInfo
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- CN218633730U CN218633730U CN202222906956.0U CN202222906956U CN218633730U CN 218633730 U CN218633730 U CN 218633730U CN 202222906956 U CN202222906956 U CN 202222906956U CN 218633730 U CN218633730 U CN 218633730U
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Abstract
The utility model provides a high-power rectifier bridge gets electric circuit, including first bridge rectifier BD1 and second bridge rectifier BD2, the AC input end of first bridge rectifier BD1 all is connected with the live wire electricity, and the positive direct current output of first bridge rectifier BD1 is connected with the positive end electricity of supplying power, and the negative direct current output of first bridge rectifier BD1 is connected with the negative end electricity of supplying power; the alternating current input ends of the second bridge rectifier BD2 are electrically connected with a zero line, the direct current positive output end of the second bridge rectifier BD2 is electrically connected with the power supply positive end, and the direct current negative output end of the second bridge rectifier BD2 is electrically connected with the power supply negative end; the negative end of the power supply is grounded. The utility model discloses an all set up bridge rectifier on live wire and zero line for positive half-wave alternating current and negative half-wave alternating current can all establish ties respectively through two full-bridges, can not cause the electric current inequality because of the influence of a certain full-bridge parameter or temperature coefficient.
Description
Technical Field
The utility model relates to a power supply circuit technical field particularly, relates to a high-power rectifier bridge gets electric circuit.
Background
With the development of science and technology, the application of power is more and more extensive. When a high-power amplifier is designed, the required current sometimes reaches four and fifty amperes, and in the traditional circuit, alternating current connected to a zero-live wire is converted into direct current through a rectifier bridge to supply power. The rectifier bridge circuit is generally arranged on a live wire, the live wire is converted into a direct-current positive electrode and a direct-current negative electrode through the rectifier bridge, and the zero line is directly electrically connected with the direct-current negative electrode. The conventional rectifier bridge is formed by connecting four diodes with each other, and comprises two full bridges.
However, this kind of circuit that only sets up the rectifier bridge on the live wire, the alternating current of positive half-wave and the alternating current of negative half-wave pass through a full-bridge of rectifier bridge respectively, can appear like this when there is the error in a full-bridge and another full-bridge parameter or two full-bridge radiating conditions are different, the electric current that flows through in the full-bridge is also different, and the diode in the full-bridge receives the temperature coefficient to influence, the change that can be along with the temperature rise through the electric current, it is too big that a full-bridge flows through the electric current will appear, the high temperature, the less condition of another full-bridge electric current, just so appear a full-bridge damage very easily.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a high-power rectifier bridge gets electric circuit, solves among the prior art high-power rectifier bridge and leads to damaging the problem of a certain full-bridge because of the electric current is too big.
The utility model provides a technical scheme that above-mentioned problem adopted does: a high-power rectifier bridge power taking circuit comprises a first bridge rectifier BD1 and a second bridge rectifier BD2, wherein alternating current input ends of the first bridge rectifier BD1 are electrically connected with a live wire, a direct current positive electrode output end of the first bridge rectifier BD1 is electrically connected with a power supply positive electrode end, and a direct current negative electrode output end of the first bridge rectifier BD1 is electrically connected with a power supply negative electrode end; the alternating current input ends of the second bridge rectifier BD2 are electrically connected with a zero line, the direct current positive output end of the second bridge rectifier BD2 is electrically connected with the power supply positive end, and the direct current negative output end of the second bridge rectifier BD2 is electrically connected with the power supply negative end; and the power supply negative electrode end is grounded.
Compared with the prior art, the utility model has the advantages of: through all setting up the bridge rectifier on live wire and zero line for positive half-wave alternating current and negative half-wave alternating current all can establish ties respectively and pass through two full-bridges, and the electric current that flows through each full-bridge of establishing ties like this is all the same, can not cause the electric current different because of the influence of certain full-bridge parameter or temperature coefficient, prevents to damage a certain full-bridge because of the electric current is too big.
Preferably, the positive power supply terminal is grounded through a capacitor C1.
The technical effect achieved by adopting the technical scheme is as follows: the voltage abrupt change is prevented by setting a capacitor.
Preferably, the capacitance of the capacitor C1 is 470uF, and the withstand voltage of the capacitor C1 is 450V.
The technical effect achieved by adopting the technical scheme is as follows: can absorb electric energy to a certain extent and prevent the transient voltage from being overlarge.
Preferably, the first bridge rectifier BD1 includes a diode D1, a diode D2, a diode D3, and a diode D4; the second bridge rectifier BD2 includes a diode D5, a diode D6, a diode D7, and a diode D8; the negative electrode of the diode D1 is electrically connected with the negative electrode of the diode D2, the positive electrode of the diode D2 is electrically connected with the negative electrode of the diode D3, the positive electrode of the diode D3 is electrically connected with the positive electrode of the diode D4, and the negative electrode of the diode D4 is electrically connected with the positive electrode of the diode D1; the anode of the diode D1 and the anode of the diode D2 are both electrically connected with a live wire, the anode of the diode D3 is grounded, and the cathode of the diode D1 is electrically connected with the anode end of a power supply; the negative electrode of the diode D5 is electrically connected with the negative electrode of the diode D6, the positive electrode of the diode D6 is electrically connected with the negative electrode of the diode D7, the positive electrode of the diode D7 is electrically connected with the positive electrode of the diode D8, and the negative electrode of the diode D8 is electrically connected with the positive electrode of the diode D5; the positive pole of the diode D5 and the positive pole of the diode D6 are both electrically connected with a zero line, the positive pole of the diode D7 is grounded, and the negative pole of the diode D5 is electrically connected with the positive end of a power supply.
The technical effect achieved by adopting the technical scheme is as follows: the positive half-wave of the alternating current respectively enters a diode D1 and a diode D2 through a live wire end and is transmitted to a power supply positive end, and then flows back to a zero wire end through a power supply negative end, a diode D7 and a diode D8; and the negative half-wave of the alternating current respectively enters a diode D5 and a diode D6 through the zero line end and is transmitted to the power supply positive end, and then flows back to the live wire end through the power supply negative end, a diode D3 and a diode D4.
Preferably, the positive power supply terminal is grounded through a load resistor R1.
The technical effect achieved by adopting the technical scheme is as follows: the load is simulated through the load resistor, and meanwhile, the load resistor plays a role in damping and consumes energy of overvoltage, so that oscillation of a circuit is suppressed, and the stability of the voltage of the power supply anode is ensured.
Drawings
Fig. 1 is a circuit diagram of a high-power rectifier bridge power-taking circuit of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, the present embodiment relates to a high power rectifier bridge power-taking circuit, which includes a first bridge rectifier BD1 and a second bridge rectifier BD2.
The alternating current input ends of the first bridge rectifier BD1 are electrically connected with a live wire, the direct current positive output end of the first bridge rectifier BD1 is electrically connected with a power supply positive end, and the direct current negative output end of the first bridge rectifier BD1 is electrically connected with a power supply negative end;
the alternating current input ends of the second bridge rectifier BD2 are electrically connected with a zero line, the direct current positive output end of the second bridge rectifier BD2 is electrically connected with the power supply positive end, and the direct current negative output end of the second bridge rectifier BD2 is electrically connected with the power supply negative end; the negative end of the power supply is grounded.
Through all setting up the bridge rectifier on live wire and zero line for positive half-wave alternating current and negative half-wave alternating current all can establish ties respectively and pass through two full-bridges, and the electric current that flows through each full-bridge of establishing ties like this is all the same, can not cause the electric current different because of the influence of certain full-bridge parameter or temperature coefficient, prevents to damage a certain full-bridge because of the electric current is too big.
Wherein, the positive terminal of the power supply is grounded through a capacitor C1. The voltage abrupt change is prevented by setting a capacitor.
Specifically, in this embodiment, the capacitance of the capacitor C1 is 470uF, and the withstand voltage of the capacitor C1 is 450V. Can absorb electric energy to a certain extent and prevent the transient voltage from being overlarge.
The positive end of the power supply is grounded through a load resistor R1. Load is simulated through the load resistor R1, and simultaneously the load resistor R1 plays a damping role and consumes the energy of overvoltage, so that the oscillation of the circuit is inhibited, and the stability of the voltage of the power supply anode is ensured.
In the present embodiment, the first bridge rectifier BD1 includes a diode D1, a diode D2, a diode D3, and a diode D4; the second bridge rectifier BD2 includes a diode D5, a diode D6, a diode D7, and a diode D8;
the cathode of the diode D1 is electrically connected with the cathode of the diode D2, the anode of the diode D2 is electrically connected with the cathode of the diode D3, the anode of the diode D3 is electrically connected with the anode of the diode D4, and the cathode of the diode D4 is electrically connected with the anode of the diode D1; the anode of the diode D1 and the anode of the diode D2 are both electrically connected with a live wire, the anode of the diode D3 is grounded, and the cathode of the diode D1 is electrically connected with the anode end of a power supply;
the cathode of the diode D5 is electrically connected with the cathode of the diode D6, the anode of the diode D6 is electrically connected with the cathode of the diode D7, the anode of the diode D7 is electrically connected with the anode of the diode D8, and the cathode of the diode D8 is electrically connected with the anode of the diode D5; the anode of the diode D5 and the anode of the diode D6 are both electrically connected with the zero line, the anode of the diode D7 is grounded, and the cathode of the diode D5 is electrically connected with the anode end of the power supply.
The working principle is as follows: the positive half-wave of alternating current respectively enters a diode D1 and a diode D2 of a first bridge rectifier BD1 through a live wire end and is conveyed to a power supply positive end, the power supply positive end obtains direct current after passing through a filter capacitor C1, the direct current is connected to a power supply negative end through a load resistor R1, and the power supply negative end and a diode D7 and a diode D8 of a second bridge rectifier BD2 flow back to a zero line end.
And the negative half-wave of the alternating current respectively enters a diode D5 and a diode D6 of the second bridge rectifier BD2 through the zero line end and is transmitted to the power supply positive end, the power supply positive end obtains direct current after passing through a filter capacitor C1, the direct current is connected to the power supply negative end through a load resistor R1, and the power supply negative end and a diode D3 and a diode D4 of the first bridge rectifier BD1 flow back to the live wire end.
The beneficial effects of the utility model are that: through all setting up the bridge rectifier on live wire and zero line for positive half-wave alternating current and negative half-wave alternating current all can establish ties respectively and pass through two full-bridges, and the electric current that flows through each full-bridge of establishing ties like this is all the same, can not cause the electric current different because of the influence of certain full-bridge parameter or temperature coefficient, prevents to damage a certain full-bridge because of the electric current is too big.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.
Claims (5)
1. The utility model provides a high-power rectifier bridge gets electric circuit which characterized in that: including a first bridge rectifier BD1 and a second bridge rectifier BD2,
the alternating current input ends of the first bridge rectifier BD1 are electrically connected with a live wire, the direct current positive output end of the first bridge rectifier BD1 is electrically connected with a power supply positive end, and the direct current negative output end of the first bridge rectifier BD1 is electrically connected with a power supply negative end;
the alternating current input ends of the second bridge rectifier BD2 are electrically connected with a zero line, the direct current positive output end of the second bridge rectifier BD2 is electrically connected with the power supply positive end, and the direct current negative output end of the second bridge rectifier BD2 is electrically connected with the power supply negative end; and the power supply negative electrode end is grounded.
2. The high-power rectifier bridge power-taking circuit as claimed in claim 1, wherein: and the positive end of the power supply is grounded through a capacitor C1.
3. The high-power rectifier bridge power-taking circuit according to claim 2, characterized in that: the capacitance of the capacitor C1 is 470uF, and the withstand voltage value of the capacitor C1 is 450V.
4. The high-power rectifier bridge power-taking circuit according to claim 1 or 2, characterized in that: the first bridge rectifier BD1 includes a diode D1, a diode D2, a diode D3, and a diode D4; the second bridge rectifier BD2 includes a diode D5, a diode D6, a diode D7, and a diode D8;
the negative electrode of the diode D1 is electrically connected with the negative electrode of the diode D2, the positive electrode of the diode D2 is electrically connected with the negative electrode of the diode D3, the positive electrode of the diode D3 is electrically connected with the positive electrode of the diode D4, and the negative electrode of the diode D4 is electrically connected with the positive electrode of the diode D1; the anode of the diode D1 and the anode of the diode D2 are both electrically connected with a live wire, the anode of the diode D3 is grounded, and the cathode of the diode D1 is electrically connected with the anode end of a power supply;
the negative electrode of the diode D5 is electrically connected with the negative electrode of the diode D6, the positive electrode of the diode D6 is electrically connected with the negative electrode of the diode D7, the positive electrode of the diode D7 is electrically connected with the positive electrode of the diode D8, and the negative electrode of the diode D8 is electrically connected with the positive electrode of the diode D5; the positive pole of the diode D5 and the positive pole of the diode D6 are both electrically connected with the zero line, the positive pole of the diode D7 is grounded, and the negative pole of the diode D5 is electrically connected with the positive end of the power supply.
5. The high-power rectifier bridge power-taking circuit according to claim 1, characterized in that: and the positive end of the power supply is grounded through a load resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222906956.0U CN218633730U (en) | 2022-10-31 | 2022-10-31 | High-power rectifier bridge power-taking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222906956.0U CN218633730U (en) | 2022-10-31 | 2022-10-31 | High-power rectifier bridge power-taking circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633730U true CN218633730U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222906956.0U Active CN218633730U (en) | 2022-10-31 | 2022-10-31 | High-power rectifier bridge power-taking circuit |
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| Country | Link |
|---|---|
| CN (1) | CN218633730U (en) |
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2022
- 2022-10-31 CN CN202222906956.0U patent/CN218633730U/en active Active
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