CN216959408U - Chopping voltage regulating circuit and electronic equipment - Google Patents
Chopping voltage regulating circuit and electronic equipment Download PDFInfo
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- CN216959408U CN216959408U CN202220206144.2U CN202220206144U CN216959408U CN 216959408 U CN216959408 U CN 216959408U CN 202220206144 U CN202220206144 U CN 202220206144U CN 216959408 U CN216959408 U CN 216959408U
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a chopping voltage regulating circuit and an electronic device, comprising: the charging circuit comprises a first input end, a second input end, a controlled silicon, a bidirectional trigger diode and a charging unit, wherein the first input end and the second input end are used for connecting alternating current input; the first end of the controlled silicon is connected with the first input end, the second end of the controlled silicon is used for connecting a load circuit and is connected with the second input end through the load circuit, and the third end of the controlled silicon is connected with the first end of the bidirectional trigger diode; the charging unit includes: the trigger level generating circuit, the resistance adjusting circuit and the charging capacitor are connected in series; the trigger level generating circuit is used for generating a trigger level; the first end of the resistance adjusting circuit is connected with the first input end, the second end of the resistance adjusting circuit is connected with the second end of the bidirectional trigger diode and the first end of the charging capacitor, and the resistance adjusting circuit is connected with the trigger level generating circuit and is configured to generate a resistance value corresponding to the trigger level. The utility model has simple adjusting process and low cost.
Description
Technical Field
The utility model relates to the technical field of voltage regulation, in particular to a chopping voltage regulation circuit and electronic equipment.
Background
In current voltage regulation circuits, for example in some lamp dimming circuits, it is common to perform voltage regulation by means of a manual potentiometer to achieve input voltage regulation and ultimately brightness regulation. In the manual potential adjusting process, the accuracy of the adjusting process is difficult to ensure, and the stability is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a chopping voltage regulating circuit and electronic equipment.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a chopper regulator circuit is constructed comprising: the charging circuit comprises a first input end, a second input end, a controlled silicon, a bidirectional trigger diode and a charging unit, wherein the first input end and the second input end are used for connecting alternating current input;
the first end of the controlled silicon is connected with the first input end, the second end of the controlled silicon is used for being connected with a load circuit and is connected with the second input end through the load circuit, and the third end of the controlled silicon is connected with the first end of the bidirectional trigger diode;
the charging unit includes: the trigger level generating circuit, the resistance adjusting circuit and the charging capacitor are connected in series;
the trigger level generating circuit is used for generating a trigger level;
the first end of the resistance adjusting circuit is connected with the first input end, the second end of the resistance adjusting circuit is connected with the second end of the bidirectional trigger diode and the first end of the charging capacitor, and the resistance adjusting circuit is connected with the trigger level generating circuit and is configured to generate a resistance value corresponding to the trigger level.
Preferably, in the chopping voltage regulating circuit of the present invention, the trigger level generating circuit includes an MCU, and the resistance adjusting unit includes a controllable adjusting resistor, a resistor R2, and a resistor R3;
the first end of the controllable adjusting resistor is connected with the first input end and the first end of the resistor R2, the second end of the controllable adjusting resistor is connected with the second end of the resistor R2 and the first end of the resistor R3, the second end of the resistor R3 is connected with the second end of the diac, and the control end of the controllable adjusting resistor is connected with the MCU.
Preferably, in the chopper voltage regulating circuit of the present invention, the controllable regulating resistor includes an optically controlled regulating resistor OR 1;
a first pin of the optically controlled adjusting resistor OR1 is connected to the MCU, a second pin of the optically controlled adjusting resistor OR1 is grounded, a third pin of the optically controlled adjusting resistor OR1 is connected to the first input terminal, and a fourth pin of the optically controlled adjusting resistor OR1 is connected to the first terminal of the resistor R3.
Preferably, in the chopper voltage-regulating circuit of the present invention, the controllable regulating resistor includes a digital potentiometer IC 3;
the first pin, the second pin and the third pin of the digital potentiometer IC3 are respectively connected with the MCU, the fifth pin and the sixth pin of the digital potentiometer IC3 are connected with the first input end, and the seventh pin of the digital potentiometer IC3 is connected with the first end of the resistor R3.
Preferably, in the chopper voltage regulating circuit of the present invention, the charging capacitor includes a capacitor C1, and a first end of the capacitor C1 is connected to a second end of the resistor R3 and a second end of the diac.
Preferably, the chopper voltage regulating circuit of the present invention further includes a protection unit, a first end of the protection unit is connected to the first input end, a second end of the protection unit is connected to the first end of the charging capacitor, and a third end of the protection unit is connected to the second end of the charging unit and the second end of the thyristor.
Preferably, in the chopper voltage regulating circuit of the present invention, the protection unit includes a resistor R4, a resistor R5, a diode D1, and a diode D5;
a first end of the resistor R4 and a first end of the resistor R5 are respectively connected with the first input end, a second end of the resistor R4 is connected with a cathode of the diode D1 and a cathode of the diode D5, and an anode of the diode D1 is connected with a second end of the diac; the second end of the resistor R5 and the anode of the diode D5 are respectively connected with the second end of the thyristor.
Preferably, in the chopping voltage regulating circuit of the present invention, the MCU is configured to be connected to the load circuit and to generate the trigger level triggered by the load circuit.
Preferably, in the chopping voltage regulating circuit of the present invention, the first input end is used for connecting to a live input end of the ac input, and the second input end is used for connecting to a zero line input end of the ac input.
The utility model also provides an electronic device comprising the chopper voltage regulating circuit as described in any one of the above.
The chopping voltage regulating circuit and the electronic equipment have the following beneficial effects that: the adjusting process is simple and the cost is low.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural diagram of an embodiment of a chopper regulator circuit according to the present invention;
FIG. 2 is a schematic circuit diagram of an embodiment of a chopper regulator circuit of the present invention;
FIG. 3 is a circuit schematic of another embodiment of a chopper regulator circuit of the present invention;
fig. 4 is a schematic circuit diagram of another embodiment of a chopper regulator circuit of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of a chopper voltage adjusting circuit of the present invention, the chopper voltage adjusting circuit includes: a first input terminal 111 and a second input terminal 112 for connecting an ac input, and a thyristor 120, a diac 140, and a charging unit; a first end of the thyristor 120 is connected to the first input end 111, a second end of the thyristor 120 is used for connecting to a load circuit and is connected to the second input end 112 through the load circuit, and a third end of the thyristor 120 is connected to a first end of the diac 140; the charging unit includes: a trigger level generation circuit 131, a resistance adjustment circuit 132, and a charging capacitor 133; the trigger level generation circuit 131 is used for outputting a trigger level; a first terminal of the resistance adjusting circuit 132 is connected to the first input terminal 111, a second terminal of the resistance adjusting circuit 132 is connected to the second terminal of the diac 140 and the first terminal of the charging capacitor 133, and the resistance adjusting circuit 132 is connected to the trigger level generating circuit 131 and configured to generate a resistance value corresponding to the trigger level. Specifically, a thyristor 120 is connected in series in a power supply loop of the load circuit, and the thyristor 120 may be triggered and turned on by a diac 140, where the diac 140 has a corresponding conduction angle of the charging unit controller. In the working process of the charging unit, the trigger level is generated by the trigger level generating circuit 131, the resistance adjusting circuit 132 generates a corresponding resistance value according to the trigger level, the charging time constant of the charging unit is controlled by changing the resistance value, the conduction angle of the bidirectional trigger diode 140 is finally adjusted, the conduction of the thyristor 120 is triggered, the input chopping is realized, and the voltage adjustment is finally realized.
As shown in fig. 2 to 4, in an embodiment, the trigger level generating circuit 131 includes an MCU, and the resistance adjusting unit includes a controllable adjusting resistor, a resistor R2 and a resistor R3; the first end of the controllable adjusting resistor is connected to the first input end 111 and the first end of the resistor R2, the second end of the controllable adjusting resistor is connected to the second end of the resistor R2 and the first end of the resistor R3, the second end of the resistor R3 is connected to the second end of the diac 140, and the control end of the controllable adjusting resistor is connected to the MCU. Specifically, the control level may be output by the MCU. The controllable adjusting resistor adjusts the resistor according to the control level, and finally forms the charging parameter of the RC charging circuit together with the resistor R2, the resistor R3 and the charging capacitor 133. In one embodiment, the thyristor 120 may be a thyristor Q1 and the diac 140 may be a diac D2.
As shown in fig. 3, in an embodiment, the controllable adjusting resistor includes an optically controlled adjusting resistor OR 1; a first pin of the optically-controlled adjusting resistor OR1 is connected to the MCU, a second pin of the optically-controlled adjusting resistor OR1 is grounded, a third pin of the optically-controlled adjusting resistor OR1 is connected to the first input end 111, and a fourth pin of the optically-controlled adjusting resistor OR1 is connected to a first end of the resistor R3; specifically, the controllable adjusting resistor may be a light-operated adjusting resistor OR1 and a peripheral circuit thereof, and the light-operated adjusting resistor OR1 is controlled by a control level output by the MCU to adjust the resistance.
As shown in fig. 4, in one embodiment, the controllably adjustable resistance includes a digital potentiometer IC 3; the first pin, the second pin and the third pin of the digital potentiometer IC3 are respectively connected with the MCU, the fifth pin and the sixth pin of the digital potentiometer IC3 are connected with the first input end 111, and the seventh pin of the digital potentiometer IC3 is connected with the first end of the resistor R3. Specifically, the controllable adjustable resistor may be a digital potentiometer IC3 and its peripheral circuit, and the digital potentiometer IC3 is controlled by the control level output by the MCU to perform resistance adjustment, where the digital potentiometer IC3 may adopt MCP41X 1. The specific connection relationship can refer to the above description.
Optionally, the charging capacitor 133 includes a capacitor C1, and a first terminal of the capacitor C1 is connected to the second terminal of the resistor R3 and the second terminal of the diac 140. Specifically, the charging capacitor 133 may be a single capacitor C1. It is used with a capacitor C1 and a resistor, so that the RC period of the capacitor and the resistor is adjustable between 0 and 10 milliseconds.
In addition, in this novel chopping voltage regulating circuit of this use, still include the protection unit, the first end of protection unit is connected first input 111, the second end of protection unit is connected the first end of charging capacitor 133, the third end of protection unit is connected the second end of charging unit and the second end of silicon controlled rectifier 120. In particular, the capacitor of the capacitor C1 realized by the protection unit can work even when the RC period value is large, and is not triggered by mistake.
Optionally, the protection unit includes a resistor R4, a resistor R5, a diode D1, and a diode D5; a first terminal of the resistor R4 and a first terminal of the resistor R5 are respectively connected to the first input terminal 111, a second terminal of the resistor R4 is connected to a cathode of the diode D1 and a cathode of the diode D5, and an anode of the diode D1 is connected to a second terminal of the diac 140; the second terminal of the resistor R5 and the anode of the diode D5 are respectively connected to the second terminal of the thyristor 120. Specifically, when the resistance of the adjustable resistor is large, the voltage of the capacitor C1 may be always lower than the turn-on voltage of the bidirectional diode D2. If the voltage of the capacitor C1 is higher than the conduction value of the bidirectional diode D2, the bidirectional diode D2 may be turned on before 90 °, and false triggering may occur. The charging and discharging time of the capacitor C1 is changed through the resistor R4, the resistor R5, the diode D1 and the diode D5, so that the capacitor C1 can obtain a high voltage value when the resistance value of the adjustable resistor is large, the bidirectional diode D2 is conducted, and the thyristor Q1 is triggered. Thus, the working range of the circuit is expanded, and the chopping can be realized at a large angle.
Optionally, in the chopper voltage regulation circuit of the present invention, the MCU is configured to be connected to the load circuit, and configured to generate the trigger level by being triggered by the load circuit. The specific MCU may be used to connect to a load circuit, and generate a corresponding point trigger level according to a feedback signal of the load circuit, so as to finally realize the resistance adjustment of the resistance adjustment circuit 132. The feedback signal received by the MCU may be a pulse signal, an SPI signal, an I2C signal generated by an existing feedback circuit, or a serial communication signal input by an external circuit.
Optionally, the first input end 111 is configured to be connected to a live input end of the ac input, and the second input end 112 is configured to be connected to a neutral input end of the ac input. Namely, the chopper regulator circuit can be used to control the live input of the ac input.
In addition, an electronic device of the present invention includes the chopper voltage regulating circuit as described in any of the above. That is, in the electronic device, the chopper voltage regulator circuit described above regulates the voltage of the circuit.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A chopper regulator circuit, comprising: the charging circuit comprises a first input end, a second input end, a controlled silicon, a bidirectional trigger diode and a charging unit, wherein the first input end and the second input end are used for connecting alternating current input;
the first end of the controllable silicon is connected with the first input end, the second end of the controllable silicon is used for being connected with a load circuit and is connected with the second input end through the load circuit, and the third end of the controllable silicon is connected with the first end of the bidirectional trigger diode;
the charging unit includes: the trigger level generating circuit, the resistance adjusting circuit and the charging capacitor are connected in series;
the trigger level generating circuit is used for generating a trigger level;
the first end of the resistance adjusting circuit is connected with the first input end, the second end of the resistance adjusting circuit is connected with the second end of the bidirectional trigger diode and the first end of the charging capacitor, and the resistance adjusting circuit is connected with the trigger level generating circuit and is configured to generate a resistance value corresponding to the trigger level.
2. The chopper voltage regulation circuit of claim 1, wherein the trigger level generation circuit comprises an MCU, and the resistance adjustment circuit comprises a controllable adjustment resistor, a resistor R2, and a resistor R3;
the first end of the controllable adjusting resistor is connected with the first input end and the first end of the resistor R2, the second end of the controllable adjusting resistor is connected with the second end of the resistor R2 and the first end of the resistor R3, the second end of the resistor R3 is connected with the second end of the diac, and the control end of the controllable adjusting resistor is connected with the MCU.
3. The chopper voltage regulator circuit of claim 2, wherein the controllable adjustment resistor comprises an optically controlled adjustment resistor OR 1;
a first pin of the optically controlled adjusting resistor OR1 is connected to the MCU, a second pin of the optically controlled adjusting resistor OR1 is grounded, a third pin of the optically controlled adjusting resistor OR1 is connected to the first input terminal, and a fourth pin of the optically controlled adjusting resistor OR1 is connected to the first terminal of the resistor R3.
4. The chopped voltage regulator circuit according to claim 2, characterized in that said controllable regulating resistance comprises a digital potentiometer IC 3;
the first pin, the second pin and the third pin of the digital potentiometer IC3 are respectively connected with the MCU, the fifth pin and the sixth pin of the digital potentiometer IC3 are connected with the first input end, and the seventh pin of the digital potentiometer IC3 is connected with the first end of the resistor R3.
5. The chopped voltage regulator circuit according to claim 2, wherein said charging capacitor includes a capacitor C1, a first terminal of said capacitor C1 being connected to a second terminal of said resistor R3 and to a second terminal of said diac.
6. The chopper voltage regulating circuit of claim 1, further comprising a protection unit, wherein a first terminal of the protection unit is connected to the first input terminal, a second terminal of the protection unit is connected to a first terminal of the charging capacitor, and a third terminal of the protection unit is connected to a second terminal of the charging unit and a second terminal of the thyristor.
7. The chopped voltage regulator circuit of claim 6, wherein said protection unit includes resistor R4, resistor R5, diode D1 and diode D5;
a first end of the resistor R4 and a first end of the resistor R5 are respectively connected to the first input terminal, a second end of the resistor R4 is connected to a cathode of the diode D1 and a cathode of the diode D5, and an anode of the diode D1 is connected to a second end of the diac; the second end of the resistor R5 and the anode of the diode D5 are respectively connected with the second end of the thyristor.
8. The chopped voltage regulator circuit of claim 2, wherein said MCU is operatively connected to said load circuit and is configured to generate said trigger level triggered by said load circuit.
9. The chopper voltage regulator circuit of claim 1, wherein the first input terminal is configured to connect to a live input terminal of the ac input and the second input terminal is configured to connect to a neutral input terminal of the ac input.
10. An electronic device characterized by comprising the chopper voltage regulating circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220206144.2U CN216959408U (en) | 2022-01-25 | 2022-01-25 | Chopping voltage regulating circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220206144.2U CN216959408U (en) | 2022-01-25 | 2022-01-25 | Chopping voltage regulating circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216959408U true CN216959408U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220206144.2U Active CN216959408U (en) | 2022-01-25 | 2022-01-25 | Chopping voltage regulating circuit and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN216959408U (en) |
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- 2022-01-25 CN CN202220206144.2U patent/CN216959408U/en active Active
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