Voltage regulation circuit, voltage regulator and electronic equipment

Abstract

The utility model provides a voltage regulating circuit, a voltage regulator and electronic equipment, and relates to the technical field of voltage regulation, the circuit comprises a first voltage limiting module, a second voltage limiting module and an adjustable module; the first end of the first voltage limiting module is electrically connected with the voltage input end, and the second end of the first voltage limiting module is electrically connected with the voltage output end and the fixed end of the adjustable module. The sliding end of the adjustable module is electrically connected with the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded; the first voltage limiting module is used for dividing the input voltage input from the voltage input end and limiting the upper limit value of the output voltage output from the voltage output end; the second voltage limiting module is used for dividing the input voltage and limiting the lower limit value of the output voltage; and the adjustable module is used for adjusting the output voltage of the voltage output end. According to the utility model, the output range of the output voltage is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage regulation, in particular to a voltage regulation circuit, a voltage regulator and electronic equipment. Background Art

[0002] Voltage regulation can convert an input voltage signal into a corresponding output voltage signal to ensure that the output voltage can meet specific requirements. Existing output voltage regulation generally uses a potentiometer to adjust the resistance using an adjustment knob to output different voltage values. The voltage regulation method of the existing technology has a voltage value range from 0V to the power supply voltage VCC, which cannot meet the requirements of some application scenarios that when the potentiometer is at a certain angle, the output voltage changes within a certain range, and cannot limit the maximum and minimum values ​​of the output voltage. Utility Model Content

[0003] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a voltage regulation circuit, a voltage regulator and an electronic device, which are intended to adjust the output range of the output voltage within the supply voltage range. The utility model provides the following technical solutions:

[0004] In a first aspect, the utility model provides a voltage regulating circuit, the circuit comprising: a first voltage limiting module, a second voltage limiting module and an adjustable module;

[0005] The first end of the first voltage limiting module is electrically connected to the voltage input end, and the second end of the first voltage limiting module is electrically connected to the voltage output end and the fixed end of the adjustable module respectively; the sliding end of the adjustable module is electrically connected to the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded;

[0006] The first voltage limiting module is used to divide the input voltage input from the voltage input end and limit the upper limit value of the output voltage output from the voltage output end; the second voltage limiting module is used to divide the input voltage and limit the lower limit value of the output voltage; the adjustable module is used to change the resistance value of the circuit connected to the adjustable module when the sliding end of the adjustable module slides, so as to adjust the output voltage of the voltage output end.

[0007] In one embodiment, the circuit also includes: a filtering module, a first end of the filtering module is electrically connected to the second end of the first voltage limiting module, a second end of the filtering module is electrically connected to the voltage output end, and a third end of the filtering module is grounded; the filtering module is used to filter the output voltage.

[0008] In one embodiment, the filter module includes a filter resistor, a first end of the filter resistor is a first end of the filter module, and a second end of the filter resistor is a second end of the filter module.

[0009] In one embodiment, the filter module further includes a filter capacitor, a first end of the filter capacitor is electrically connected to the voltage output end, and a second end of the filter capacitor is a third end of the filter module.

[0010] In one implementation, the first voltage limiting module is a first voltage limiting resistor, the first end of the first voltage limiting resistor is the first end of the first voltage limiting module, and the second end of the first voltage limiting resistor is the second end of the first voltage limiting module.

[0011] In one implementation, the second voltage limiting module is a second voltage limiting resistor, a first end of the second voltage limiting resistor is a first end of the second voltage limiting module, and a second end of the second voltage limiting resistor is a second end of the second voltage limiting module.

[0012] In one embodiment, the adjustable module is a knob-type variable resistor, and the knob-type variable resistor includes an adjustment knob, and the adjustment knob is used to adjust the resistance value of the knob-type variable resistor connected to the circuit.

[0013] In one embodiment, the adjustment angle of the adjustment knob is 0°-360° or 0°-180°.

[0014] In a second aspect, the utility model provides a voltage regulator, wherein the voltage regulator comprises the voltage regulating circuit described in the first aspect.

[0015] In a third aspect, the utility model provides an electronic device, wherein the electronic device comprises the voltage regulator described in the second aspect.

[0016] The utility model provides a voltage regulating circuit, a voltage regulator and an electronic device, wherein the circuit includes a first voltage limiting module, a second voltage limiting module and an adjustable module; the first end of the first voltage limiting module is electrically connected to the voltage input end, and the second end of the first voltage limiting module is electrically connected to the voltage output end and the fixed end of the adjustable module respectively; the sliding end of the adjustable module is electrically connected to the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded; the first voltage limiting module is used to divide the input voltage input from the voltage input end and limit the upper limit value of the output voltage output from the voltage output end; the second voltage limiting module is used to divide the input voltage and limit the lower limit value of the output voltage; the adjustable module is used to change the resistance of the circuit connected to the adjustable module when the sliding end of the adjustable module slides, so as to adjust the output voltage of the voltage output end. The utility model realizes the adjustment of the output range of the output voltage within the power supply voltage range by adding a voltage dividing module to the fixed end and the sliding end of the adjustable module respectively.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a voltage regulating circuit provided by an embodiment of the utility model is shown;

[0020] Figure 2 Another schematic diagram of the structure of the voltage regulating circuit provided by the embodiment of the utility model is shown;

[0021] Figure 3 A circuit diagram of a voltage regulating circuit provided by an embodiment of the utility model is shown.

[0022] Description of main component symbols:

[0023] 100 - voltage regulating circuit; 110 - first voltage limiting module; 120 - adjustable module; 130 - second voltage limiting module; 140 - filtering module; 200 - voltage input terminal; 300 - voltage output terminal; R1 - filtering resistor; C1 - filtering capacitor. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Example 1

[0028] The present invention provides a voltage regulation circuit. Figure 1 , the voltage regulating circuit 100 includes: a first voltage limiting module 110, a second voltage limiting module 130 and an adjustable module 120;

[0029] The first end of the first voltage limiting module 110 is electrically connected to the voltage input end 200, and the second end of the first voltage limiting module 110 is electrically connected to the voltage output end 300 and the fixed end of the adjustable module 120 respectively;

[0030] The sliding end of the adjustable module 120 is electrically connected to the first end of the second voltage limiting module 130, and the second end of the second voltage limiting module 130 is grounded;

[0031] The first voltage limiting module 110 is used to divide the input voltage input from the voltage input terminal 200 and limit the upper limit value of the output voltage output from the voltage output terminal;

[0032] The second voltage limiting module 130 is used to divide the input voltage and limit the lower limit value of the output voltage;

[0033] The adjustable module 120 is used to change the resistance of the circuit connected to the adjustable module when the sliding end of the adjustable module 120 slides, so as to adjust the output voltage of the voltage output end 300 .

[0034] It should be noted that the existing voltage regulation output is generally adjusted by a potentiometer. By adjusting the potentiometer's adjustment knob to change the resistance of the potentiometer connected to the circuit, the output voltage is controlled. This adjustment method allows the output voltage to only vary from 0V to the input voltage VCC. In some application scenarios, the potentiometer is required to vary the output voltage within a preset range within a certain adjustment angle. In the prior art, some use operational amplifiers to raise or lower the voltage, which not only makes the circuit complex, but also can only simply raise or lower the voltage; some use structural limits to limit the voltage variation range, which also increases the complexity of the structure.

[0035] In this embodiment, a first voltage limiting module 110 and a second voltage limiting module 130 are added to the adjustable module 120 to divide the input voltage, and the upper and lower limits of the output voltage are limited by reasonably setting the resistance values ​​of the first voltage limiting module 110 and the second voltage limiting module 130, that is, the output range of the output voltage is adjusted within the adjustable angle of the adjustable module 120.

[0036] In one embodiment, see Figure 2 The circuit also includes: a filter module 140, a first end of the filter module 140 is electrically connected to the second end of the first voltage limiting module 110, a second end of the filter module 140 is electrically connected to the voltage output end 300, and a third end of the filter module 140 is grounded; the filter module 140 is used to filter the output voltage.

[0037] In this embodiment, the voltage regulating circuit 100 further includes a filtering module 140 , which is an RC filtering circuit, and is used to filter the output voltage to ensure the signal quality and stability of the output voltage.

[0038] In one embodiment, see Figure 3 The filter module 140 includes a filter resistor R1 , a first end of the filter resistor R1 is a first end of the filter module 140 , and a second end of the filter resistor R1 is a second end of the filter module 140 .

[0039] In this embodiment, the filter resistor R1 and the filter capacitor C1 together form an RC filter to filter the output voltage.

[0040] In one implementation, the filter module 140 further includes a filter capacitor C1 , a first end of the filter capacitor C1 is electrically connected to the voltage output end 300 , and a second end of the filter capacitor C1 is a third end of the filter module 140 .

[0041] In this embodiment, the filter module 140 composed of the filter resistor R1 and the filter capacitor C1 can remove high-frequency components or low-frequency components in the output voltage, so that the output voltage signal is smoother.

[0042] In one implementation, the first voltage limiting module 110 is a first voltage limiting resistor, the first end of the first voltage limiting resistor is the first end of the first voltage limiting module 110 , and the second end of the first voltage limiting resistor is the second end of the first voltage limiting module 110 .

[0043] In this embodiment, the upper limit value of the output voltage can be limited by reasonably setting the resistance value of the first voltage limiting resistor. Specifically, the resistance value calculation formula of the first voltage limiting resistor is:

[0044]

[0045] Wherein, R1 is the resistance value of the first voltage limiting resistor, θ1 is the minimum adjustment angle of the knob-type variable resistor, θ2 is the maximum adjustment angle of the knob-type variable resistor, R x is the total resistance of the adjustable module 120 , U1 is the preset minimum output voltage, U2 is the preset maximum output voltage, and VCC is the input voltage.

[0046] It should be noted that θ1, θ2 and R x By referring to the technical documents of the selected knob-type variable resistor, it can be found that U1 and U1 are the maximum and minimum values ​​of the preset output voltage adjustment range.

[0047] In one implementation, the second voltage limiting module 130 is a second voltage limiting resistor, a first end of the second voltage limiting resistor is the first end of the second voltage limiting module 130 , and a second end of the second voltage limiting resistor is the second end of the second voltage limiting module 130 .

[0048] In this embodiment, the calculation formula of the resistance of the second voltage limiting resistor is:

[0049]

[0050] Wherein, R2 is the resistance value of the second voltage limiting resistor.

[0051] In one embodiment, the adjustable module 120 is a knob-type variable resistor, and the knob-type variable resistor includes an adjustment knob, and the adjustment knob is used to adjust the resistance value of the knob-type variable resistor connected to the circuit.

[0052] In this embodiment, the adjusting knob is electrically connected to the sliding end of the knob-type variable resistor. By rotating the adjusting knob, the resistance value of the knob-type variable resistor connected to the voltage regulating circuit can be changed, thereby adjusting the output voltage.

[0053] In one embodiment, the adjustment angle of the adjustment knob is 0°-360° or 0°-180°.

[0054] In other embodiments, the adjustment angle of the adjustment knob may also be in other ranges, which are not limited here.

[0055] The voltage regulating circuit provided by the embodiment of the utility model comprises a first voltage limiting module, a second voltage limiting module and an adjustable module; the first end of the first voltage limiting module is electrically connected to the voltage input end, and the second end of the first voltage limiting module is electrically connected to the voltage output end and the fixed end of the adjustable module respectively; the sliding end of the adjustable module is electrically connected to the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded; the first voltage limiting module is used to divide the input voltage input from the voltage input end and limit the upper limit value of the output voltage output from the voltage output end; the second voltage limiting module is used to divide the input voltage and limit the lower limit value of the output voltage; the adjustable module is used to change the resistance of the circuit connected to the adjustable module when the sliding end of the adjustable module slides, so as to adjust the output voltage of the voltage output end. The utility model realizes the output range of the output voltage adjustment within the power supply voltage range by adding a voltage dividing module to the fixed end and the sliding end of the adjustable module respectively.

[0056] Example 2

[0057] In addition, an embodiment of the utility model further provides a voltage regulator, which includes the voltage regulation circuit described in Embodiment 1.

[0058] Specifically, the voltage regulating circuit includes: a first voltage limiting module, a second voltage limiting module and an adjustable module; the first end of the first voltage limiting module is electrically connected to the voltage input end, and the second end of the first voltage limiting module is electrically connected to the voltage output end and the fixed end of the adjustable module respectively; the sliding end of the adjustable module is electrically connected to the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded; the first voltage limiting module is used to divide the input voltage input from the voltage input end and limit the upper limit value of the output voltage output from the voltage output end; the second voltage limiting module is used to divide the input voltage and limit the lower limit value of the output voltage; the adjustable module is used to change the resistance of the circuit connected to the adjustable module when the sliding end of the adjustable module slides, so as to adjust the output voltage of the voltage output end.

[0059] In one embodiment, the voltage regulating circuit also includes: a filtering module, the first end of the filtering module is electrically connected to the second end of the first voltage limiting module, the second end of the filtering module is electrically connected to the voltage output end, and the third end of the filtering module is grounded; the filtering module is used to filter the output voltage.

[0060] In one embodiment, the filter module includes a filter resistor, a first end of the filter resistor is a first end of the filter module, and a second end of the filter resistor is a second end of the filter module.

[0061] In one embodiment, the filter module further includes a filter capacitor, a first end of the filter capacitor is electrically connected to the voltage output end, and a second end of the filter capacitor is a third end of the filter module.

[0062] In one implementation, the first voltage limiting module is a first voltage limiting resistor, the first end of the first voltage limiting resistor is the first end of the first voltage limiting module, and the second end of the first voltage limiting resistor is the second end of the first voltage limiting module.

[0063] In one implementation, the second voltage limiting module is a second voltage limiting resistor, a first end of the second voltage limiting resistor is a first end of the second voltage limiting module, and a second end of the second voltage limiting resistor is a second end of the second voltage limiting module.

[0064] In one embodiment, the adjustable module is a knob-type variable resistor, and the knob-type variable resistor includes an adjustment knob, and the adjustment knob is used to adjust the resistance value of the knob-type variable resistor connected to the circuit.

[0065] In one embodiment, the adjustment angle of the adjustment knob is 0°-360° or 0°-180°.

[0066] The utility model realizes adjusting the output range of the output voltage within the supply voltage range by adding a voltage divider module to the fixed end and the sliding end of the adjustable module. The voltage regulator provided by the utility model embodiment can realize the function of the voltage regulation circuit provided by embodiment 1, and will not be described here to avoid repetition.

[0067] Example 3

[0068] In addition, an embodiment of the utility model further provides an electronic device, the electronic device includes the voltage regulator described in embodiment 2, the electronic device adjusts the output voltage to achieve output signal adjustment, and is applied to a voltage regulation system, such as a speed control system or a light regulation system. Specifically, the electronic device includes: a first voltage limiting module, a second voltage limiting module and an adjustable module; the first end of the first voltage limiting module is electrically connected to the voltage input end, and the second end of the first voltage limiting module is electrically connected to the voltage output end and the fixed end of the adjustable module respectively; the sliding end of the adjustable module is electrically connected to the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded; the first voltage limiting module is used to divide the input voltage input from the voltage input end and limit the upper limit value of the output voltage output from the voltage output end; the second voltage limiting module is used to divide the input voltage and limit the lower limit value of the output voltage; the adjustable module is used to change the resistance value of the circuit connected to the adjustable module when the sliding end of the adjustable module slides, so as to adjust the output voltage of the voltage output end.

[0069] The utility model realizes adjusting the output range of the output voltage within the supply voltage range by adding a voltage divider module to the fixed end and the sliding end of the adjustable module. The electronic device provided by the embodiment of the utility model can realize the function of the voltage regulator provided by the above embodiment 2, and will not be described here to avoid repetition.

[0070] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0071] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0072] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A voltage regulating circuit, characterized in that: The circuit comprises: a first voltage limiting module, a second voltage limiting module and an adjustable module; The first end of the first voltage limiting module is electrically connected to the voltage input end, and the second end of the first voltage limiting module is electrically connected to the voltage output end and the fixed end of the adjustable module respectively; The sliding end of the adjustable module is electrically connected to the first end of the second voltage limiting module, and the second end of the second voltage limiting module is grounded; The first voltage limiting module is used to divide the input voltage input from the voltage input terminal and limit the upper limit value of the output voltage output from the voltage output terminal; The second voltage limiting module is used to divide the input voltage and limit the lower limit value of the output voltage; The adjustable module is used to change the resistance value of the circuit connected to the adjustable module when the sliding end of the adjustable module slides, so as to adjust the output voltage of the voltage output end.

2. The voltage regulating circuit according to claim 1, characterized in that: The circuit further comprises: a filter module, a first end of the filter module being electrically connected to a second end of the first voltage limiting module, a second end of the filter module being electrically connected to the voltage output end, and a third end of the filter module being grounded; The filtering module is used for filtering the output voltage.

3. The voltage regulating circuit according to claim 2, characterized in that: The filter module comprises a filter resistor, a first end of the filter resistor is a first end of the filter module, and a second end of the filter resistor is a second end of the filter module.

4. The voltage regulating circuit according to claim 3, characterized in that: The filter module further includes a filter capacitor, a first end of the filter capacitor is electrically connected to the voltage output end, and a second end of the filter capacitor is a third end of the filter module.

5. The voltage regulating circuit according to claim 1, characterized in that: The first voltage limiting module is a first voltage limiting resistor, a first end of the first voltage limiting resistor is a first end of the first voltage limiting module, and a second end of the first voltage limiting resistor is a second end of the first voltage limiting module.

6. The voltage regulating circuit according to claim 1, characterized in that: The second voltage limiting module is a second voltage limiting resistor, a first end of the second voltage limiting resistor is a first end of the second voltage limiting module, and a second end of the second voltage limiting resistor is a second end of the second voltage limiting module.

7. The voltage regulating circuit according to claim 1, characterized in that: The adjustable module is a knob-type variable resistor, and the knob-type variable resistor includes an adjusting knob, and the adjusting knob is used to adjust the resistance value of the knob-type variable resistor connected to the circuit.

8. The voltage regulating circuit according to claim 7, characterized in that: The adjustment angle of the adjustment knob is 0°-360° or 0°-180°.

9. A voltage regulator, characterized in that: The voltage regulator comprises the voltage regulating circuit according to any one of claims 1 to 8.

10. An electronic device, characterized in that: The electronic device comprises the voltage regulator according to claim 9.

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