Stepless speed regulation function control circuit and fan

Abstract

The utility model relates to a stepless speed regulation function control circuit and a fan, which not only can realize stepless speed regulation, but also is stable and reliable in stepless speed regulation and low in production cost, and comprises a control chip and a speed regulation circuit, the circuit is characterized in that a pin 6 in the control chip is connected with one end of a resistor R16 through a wire, the other end of the resistor R16 is connected with one end of a capacitor C11 and the B end of a potentiometer through wires, the A end of the potentiometer is connected with the 5V voltage positive electrode input end through a wire, and the C end of the potentiometer is connected with one end of a resistor R1 through a wire. And the other end of the resistor R1 and the other end of the capacitor C11 are respectively grounded through wires. The stepless speed regulation function control circuit and the fan have the advantages that stepless speed regulation can be achieved, stepless speed regulation is stable and reliable, and production cost is low.

Description

Technical Field

[0001] The utility model belongs to the field of fan manufacturing, and in particular relates to a stepless speed regulation function control circuit and a fan. Background Art

[0002] The prior patent CN 202914343 U owned by the applicant, entitled “A safe and stable metal fan for a vehicle”, comprises a base (1), a plastic tube (2) plugged into the base (1), a bracket connector (3) disposed on the base (1), a bracket (4) connected to the bracket connector (3), a housing (5) disposed on the bracket (4), a motor (6) mounted in the housing (5), a mesh cover (7) mounted at the front end of the housing (5), and a fan blade (8) disposed in the mesh cover (7). The base (1) is provided with a gear toggle switch (9). The plastic tube (2) is sleeved with a gasket (10). The bottom of the base (1) is sleeved with a rubber ring (11). When this type of fan is used, the speed is adjusted by the gear toggle switch, that is, this type of fan performs gear speed adjustment, and its use effect is relatively poor. Utility Model Content

[0003] Design purpose: In order to avoid the shortcomings in the background technology, a stepless speed regulation function control circuit is designed, including a control chip and a speed regulation circuit, wherein pin 6 in the control chip is connected to one end of a resistor R16 in the speed regulation circuit through a wire, and the other end of the resistor R16 is respectively connected to one end of a capacitor C11 and a B end of a potentiometer through a wire, the A end of the potentiometer is connected to a 5V voltage positive input terminal through a wire, the C end of the potentiometer is connected to one end of a resistor R1 through a wire, and the other end of the resistor R1 and the other end of the capacitor C11 are respectively grounded through wires.

[0004] Preferably, pin 1 in the control chip is connected to one end of capacitor C8 and the positive input end of 5V voltage through wires, pin 8 in the control chip is connected to the other end of capacitor C8 through a wire, and pin 8 in the control chip is grounded through a wire.

[0005] Preferably, it also includes an IC power supply voltage stabilizing circuit, wherein the input end of the three-terminal voltage stabilizing tube in the IC power supply voltage stabilizing circuit is respectively connected to one end of the capacitor C7, the positive end of the capacitor E5 and one end of the inductor L1 through a wire, the other end of the inductor L1 is respectively connected to one end of the capacitor C9 and one end of the resistor R15 through a wire, the other end of the resistor R15 is connected to one end of the switch through a wire, and the other end of the switch is connected to the voltage input end through a wire, the output end of the three-terminal voltage stabilizing tube is connected to the positive end of the capacitor E6 through a wire, and the output end of the three-terminal voltage stabilizing tube is the positive input end of the 5V voltage, the common end of the three-terminal voltage stabilizing tube is respectively connected to the negative end of the capacitor E6, the other end of the capacitor C7, the negative end of the capacitor E5 and the other end of the capacitor C9 through a wire, and the common end of the three-terminal voltage stabilizing tube is grounded through a wire.

[0006] Preferably, the pin 7 in the control chip is connected to the signal terminal in the fan motor through a data line.

[0007] A fan comprises a fan body, wherein a stepless speed regulation function control circuit is arranged in the fan body.

[0008] Compared with the background technology, the utility model has the following advantages:

[0009] 1. A stepless speed regulation function control circuit and a potentiometer in a fan are provided, so that the stepless speed regulation function control circuit and the fan including the stepless speed regulation function control circuit can perform stepless speed regulation, thereby improving the use effect of the stepless speed regulation function control circuit and the potentiometer in the fan;

[0010] 2. A stepless speed regulation function control circuit and a speed regulation circuit in a fan are composed of two resistors, a capacitor and a potentiometer. Due to the reasonable layout of the speed regulation circuit, the speed regulation circuit can stably and reliably realize the stepless speed regulation of the fan while using fewer components. In addition, fewer components are used, thereby reducing the production cost of the stepless speed regulation function control circuit and the fan containing the stepless speed regulation function control circuit.

[0011] 3. The setting of a stepless speed regulation function control circuit and an IC power supply voltage stabilizing circuit in a fan further improves the use stability of the stepless speed regulation function control circuit and the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a structural schematic diagram of a control chip in a stepless speed regulation function control circuit.

[0013] Figure 2 The invention discloses a circuit diagram of a speed regulating circuit in a control circuit with a stepless speed regulating function.

[0014] Figure 3The invention discloses a circuit diagram of an IC power supply voltage stabilizing circuit in a stepless speed regulation function control circuit.

[0015] Figure 4 This is the signal connection diagram between the control chip and the fan motor.

[0016] Figure 5 This is a schematic diagram of the structure of a fan. DETAILED DESCRIPTION

[0017] Example 1: Refer to the attached Figure 1-Figure 4 . A stepless speed regulation function control circuit includes a control chip 100 and a speed regulation circuit 200, wherein the pin 6 in the control chip 100 is connected to one end of a resistor R16 in the speed regulation circuit 200 through a wire, and the other end of the resistor R16 is respectively connected to one end of a capacitor C11 and the B end of a potentiometer through a wire, the A end of the potentiometer is connected to the positive input end of a 5V voltage through a wire, the C end of the potentiometer is connected to one end of a resistor R1 through a wire, and the other end of the resistor R1 and the other end of the capacitor C11 are respectively grounded through wires. The resistance value of the resistor R16 is 10000Ω, the capacitor C11 is a 104 capacitor of 0.1uF, the potentiometer is a 50K potentiometer, and the resistance value of the resistor R1 is 10000Ω.

[0018] Pin 1 in the control chip 100 is connected to one end of capacitor C8 and the positive input terminal of 5V voltage through wires, and pin 8 in the control chip 100 is connected to the other end of capacitor C8 through wires and is grounded through wires. Capacitor C8 is a 0.1uF 104 capacitor.

[0019] It also includes an IC power supply voltage stabilizing circuit 300, in which the input end of a three-terminal voltage stabilizing tube in the IC power supply voltage stabilizing circuit 300 is respectively connected to one end of a capacitor C7, a positive end of a capacitor E5 and one end of an inductor L1 through a wire, the other end of the inductor L1 is respectively connected to one end of a capacitor C9 and one end of a resistor R15 through a wire, the other end of the resistor R15 is connected to one end of a switch through a wire, and the other end of the switch is connected to a voltage input end through a wire, the output end of the three-terminal voltage stabilizing tube is connected to the positive end of a capacitor E6 through a wire, and the output end of the three-terminal voltage stabilizing tube is a 5V voltage positive input end, the common end of the three-terminal voltage stabilizing tube is respectively connected to the negative end of a capacitor E6, the other end of a capacitor C7, the negative end of a capacitor E5 and the other end of a capacitor C9 through a wire, and the common end of the three-terminal voltage stabilizing tube is grounded through a wire. The capacitor C7 is a 0.1uF 104 capacitor, the capacitor C9 is a 0.1uF 104 capacitor, the capacitor E5 is a 100uF / 16V capacitor, the capacitor E6 is a 100uF / 16V capacitor, the model of the three-terminal voltage regulator is ht7550, and the resistance value of the resistor R15 is 100Ω

[0020] The pin 7 in the control chip 100 is connected to the signal terminal in the fan motor 400 through a data line.

[0021] Embodiment 2: Based on Embodiment 1, Figure 5 A fan includes a fan body 500, wherein the fan body 500 is provided with a stepless speed regulation function control circuit.

[0022] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of the present utility model, these textual descriptions are only simple textual descriptions of the design concept of the present utility model, rather than limitations on the design concept of the present utility model. Any combination, addition or modification that does not exceed the design concept of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A stepless speed regulation function control circuit, comprising a control chip (100) and a speed regulation circuit (200), characterized in that: Pin 6 in the control chip (100) is connected to one end of a resistor R16 in the speed control circuit (200) via a wire, and the other end of the resistor R16 is respectively connected to one end of a capacitor C11 and a B end of a potentiometer via a wire, the A end of the potentiometer is connected to a 5V voltage positive input terminal via a wire, the C end of the potentiometer is connected to one end of the resistor R1 via a wire, and the other end of the resistor R1 and the other end of the capacitor C11 are respectively grounded via wires.

2. The stepless speed regulation function control circuit according to claim 1 is characterized in that: Pin 1 in the control chip (100) is connected to one end of a capacitor C8 and a positive input terminal of a 5V voltage through wires, respectively; pin 8 in the control chip (100) is connected to the other end of the capacitor C8 through wires, and pin 8 in the control chip (100) is grounded through wires.

3. A stepless speed regulation function control circuit according to claim 1 or 2, characterized in that: It also includes an IC power supply voltage stabilizing circuit (300), wherein the input end of a three-terminal voltage stabilizing tube in the IC power supply voltage stabilizing circuit (300) is respectively connected to one end of a capacitor C7, a positive terminal of a capacitor E5 and one end of an inductor L1 through a wire, the other end of the inductor L1 is respectively connected to one end of a capacitor C9 and one end of a resistor R15 through a wire, the other end of the resistor R15 is connected to one end of a switch through a wire, and the other end of the switch is connected to a voltage input end through a wire, the output end of the three-terminal voltage stabilizing tube is connected to the positive terminal of a capacitor E6 through a wire, and the output end of the three-terminal voltage stabilizing tube is a 5V voltage positive input end, the common end of the three-terminal voltage stabilizing tube is respectively connected to the negative terminal of a capacitor E6, the other end of a capacitor C7, the negative terminal of a capacitor E5 and the other end of a capacitor C9 through a wire, and the common end of the three-terminal voltage stabilizing tube is grounded through a wire.

4. A stepless speed regulation function control circuit according to claim 1 or 2, characterized in that: Pin 7 in the control chip (100) is connected to a signal terminal in the fan motor (400) via a data line.

5. A fan, comprising a fan body (500), characterized in that: The fan body (500) is provided with a stepless speed regulation function control circuit as described in any one of claims 1 to 4.

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