Dimmable switching power supply

Abstract

The utility model discloses a dimmable switching power supply, which relates to the technical field of switching power supplies and comprises a shell, two side end parts of the shell are fixedly provided with mounting plates, the inner side of each mounting plate is fixedly provided with at least two butt joint frames, a controller is fixedly arranged in one mounting plate, and the butt joint frames are fixedly arranged in the controller. Adjusting switches are fixedly mounted in the mounting plates, the controller and the adjusting switches are mounted on the two sides of the butt-joint frame, meanwhile, three movable buckles are mounted at the top end of the controller, and the exposed end of the cable is inserted into the butt-joint frame by pulling a transparent protective cover at the top end of the butt-joint frame and rotating fastening bolts in the butt-joint frame; the cable is installed and fixed by reversely rotating the fastening bolt to enable the fastening bolt and the cable to extrude each other, and meanwhile, the transparent protective cover is pressed to enable the top end of the butt joint frame to be covered, so that a certain protection effect is achieved on the exposed wire end inside, and the protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of switching power supplies, in particular to a dimmable switching power supply. Background Art

[0002] A switching power supply, also known as an exchange power supply or a switching converter, is a high-frequency power conversion device and a type of power supply. Its function is to convert a voltage level into the voltage or current required by the user through different forms of architecture.

[0003] At present, the existing switching power supply (such as patent number: CN220291878U) discloses a switching power supply, which connects the second power supply terminal through the in-phase input terminal of the operational amplifier, the inverting input terminal of the operational amplifier is grounded through a fixed resistor, and the output terminal of the operational amplifier is connected to the feedback pin of the power chip. In this way, it can be applied to different working conditions, so that the voltage value output by the power chip at the voltage output port is kept at a stable target voltage according to the target feedback voltage control voltage.

[0004] However, during the implementation of the above technical solution, it was found that there are at least the following technical problems: by directly introducing current into the interior of the device to stabilize the voltage of the device, since the circuit inside the device is very complicated and there is no device to adjust the voltage, the device cannot be dimmed continuously and has low flexibility in use. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a dimmable switching power supply, which solves the technical problem that the device cannot be dimmed continuously and has low flexibility of use because the circuit inside the device is very complicated and there is no device for adjusting the voltage.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A dimmable switching power supply comprises a shell, two side ends of the shell are fixedly mounted with mounting plates, the inner side of each mounting plate is fixedly mounted with at least two docking frames, a controller is fixedly mounted inside one of the mounting plates, and an adjusting switch is fixedly mounted inside the mounting plates.

[0010] Preferably: a transparent protective cover is installed on the top of each docking frame, a fastening bolt is rotatably installed inside each docking frame, and an adjustable switching power supply system is arranged inside the shell, including a main circuit board, a filter, an output power supply, a sampler, a rectifier, an adjustable resistor and a safety device. The main circuit board controls the closing of the circuit, the sampler records the voltage and current changes of the line, the filter and rectifier directly rectify the AC power supply of the power grid into smoother DC power, and the safety device controls the melting of the fuse to protect the working safety of the output power supply.

[0011] (III) Beneficial effects

[0012] 1. Through the control circuit, a stable voltage is connected, and the working power supply VCC passes through an adjustable resistor. One end of the adjustable resistor is connected to the chip inside the control circuit. By adjusting the resistance value of the adjustable resistor, the reference voltage input to the out-of-phase end of the comparator can be adjusted to adjust the current size of the circuit inside the shell, adjust the brightness of one side of the device, and increase the flexibility of use.

[0013] 2. By rotating the fastening bolts in the opposite direction, the fastening bolts and the cables are squeezed against each other to fix the cables. At the same time, press the transparent protective cover to cover the top of the docking frame to provide some protection for the exposed wire ends inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0015] Figure 1 This is a structural diagram of the housing of the utility model;

[0016] Figure 2 This is a structural diagram of the mounting plate of the utility model;

[0017] Figure 3 This is a system flow chart of the utility model.

[0018] Legend: 1. Housing; 11. Mounting plate; 12. Docking frame; 13. Controller; 14. Adjustment switch. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides a dimmable switching power supply, which effectively solves the problem of stabilizing the voltage of the device by directly introducing current into the interior of the device. Since the circuit inside the device is very complicated and there is no device for adjusting the voltage, the device cannot be dimmed continuously and has low flexibility in use. A stable voltage is connected through a control circuit, and the working power supply VCC is connected through an adjustable resistor. One end of the adjustable resistor is connected to the chip inside the control circuit. By adjusting the resistance value of the adjustable resistor, the size of the reference voltage input to the out-of-phase end of the comparator can be adjusted, thereby adjusting the current size of the circuit inside the shell, adjusting the brightness on one side of the device, and increasing flexibility in use.

[0020] Example

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the voltage of the device is stabilized by directly introducing current into the device. Since the circuit inside the device is very complicated and there is no device for adjusting the voltage, the device cannot be dimmed continuously and has low flexibility in use. The overall idea is as follows:

[0022] In view of the problems existing in the prior art, the utility model provides a dimmable switching power supply, including a shell 1, two side ends of the shell 1 are fixedly installed with mounting plates 11, at least two docking frames 12 are fixedly installed on the inner side of each mounting plate 11, a controller 13 is fixedly installed inside one mounting plate 11, an adjusting switch 14 is fixedly installed inside the mounting plate 11, the controller 13 and the adjusting switch 14 are both installed on both sides of the docking frame 12, and three movable buckles are installed on the top of the controller 13. At the same time, the number of docking frames 12 installed in the two mounting plates 11 is different. The cables are installed and fixed by rotating the fastening bolts in the opposite direction so that the fastening bolts and the cables are squeezed against each other, and the transparent protective cover is pressed to cover the top of the docking frame 12, so as to provide certain protection for the exposed wire ends inside.

[0023] A transparent protective cover is installed on the top of each docking frame 12, and a fastening bolt is rotatably installed inside each docking frame 12. An adjustable switching power supply system is arranged inside the housing 1, including a main circuit board, a filter, an output power supply, a sampler, a rectifier, an adjustable resistor and a safety device. The main circuit board controls the closing of the circuit. At the same time, a sampler and a comparator are installed inside the housing 1. The output of the rectifier and filter circuit inside the housing 1 serves as a load. A stable voltage is connected through the control circuit. The sampler records the voltage and current changes of the line. The filter and the rectifier directly rectify the AC power supply of the power grid into a smoother DC power. The safety device controls the melting of the fuse to protect the working safety of the output power supply.

[0024] Working principle:

[0025] The first step is to pull the transparent protective cover on the top of the docking frame 12, turn the internal fastening bolts, insert the exposed end of the cable into the docking frame 12, and then rotate the fastening bolts in the opposite direction to squeeze the fastening bolts and the cable to fix the cable. At the same time, press the transparent protective cover to cover the top of the docking frame 12 to provide certain protection for the exposed wire ends inside. The external voltage is connected to the inside of the housing 1 through the cable and the docking frame 12. After being rectified and filtered by the rectification circuit and the filtering circuit inside the housing 1, the AC voltage becomes a DC voltage with a certain pulsating component. The voltage enters the high-frequency converter and is converted into a square wave of the required voltage value. Finally, the square wave voltage is rectified and filtered to become the required DC voltage.

[0026] In the second step, a sampler and a comparator are installed inside the shell 1 at the same time. The output of the rectifier and filter circuit inside the shell 1 is used as a load. Through the control circuit, a stable voltage is connected. The working power supply VCC passes through an adjustable resistor. One end of the adjustable resistor is connected to the chip inside the control circuit. By adjusting the resistance value of the adjustable resistor, the reference voltage input to the out-of-phase end of the comparator can be adjusted to adjust the current size of the internal circuit of the shell 1, adjust the brightness of one side of the device, increase the flexibility of use, and use it through the internal control circuit to adjust the switching time ratio of the high-frequency switching element to achieve the purpose of stabilizing the output voltage.

[0027] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A dimmable switching power supply, comprising a housing (1), characterized in that: Both side ends of the housing (1) are fixedly mounted with mounting plates (11), at least two docking frames (12) are fixedly mounted on the inner side of each mounting plate (11), a controller (13) is fixedly mounted inside one mounting plate (11), and an adjustment switch (14) is fixedly mounted inside the mounting plate (11) located on one side of the docking frame (12); The controller (13) and the regulating switch (14) are both mounted on both sides of the docking frame (12), and three movable buckles are mounted on the top of the controller (13). The number of docking frames (12) mounted inside the two mounting plates (11) is different.

2. A dimmable switching power supply as claimed in claim 1, characterized in that: A transparent protective cover is installed on the top of each docking frame (12), and a fastening bolt is rotatably installed inside each docking frame (12).

3. A dimmable switching power supply as claimed in claim 1, characterized in that: An adjustable switching power supply system is arranged inside the housing (1), comprising a main circuit board, a filter, an output power supply, a sampler, a rectifier, an adjustable resistor and a fuse.

4. A dimmable switching power supply as claimed in claim 3, characterized in that: The main circuit board controls the closing of the circuit, and the sampler records the voltage and current changes of the circuit.

5. The dimmable switching power supply according to claim 3, characterized in that: The filter and rectifier are used to directly rectify the AC power supply of the power grid into smoother DC power.

6. A dimmable switching power supply as claimed in claim 3, characterized in that: The safety device controls the fusing of the fuse to protect the working safety of the output power supply.

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