LED dynamic indicator for small household appliances

Abstract

The utility model discloses a small household electrical appliance LED dynamic indicator comprising an LED dynamic indicator body, the LED dynamic indicator body comprises a triode dynamic power supply circuit, an LED cascade circuit and a mutual inductor dynamic power supply circuit, the triode dynamic power supply circuit and the mutual inductor dynamic power supply circuit are both electrically connected with the LED cascade circuit, and the LED cascade circuit is electrically connected with the mutual inductor dynamic power supply circuit. And the triode dynamic power supply circuit and the mutual inductor dynamic power supply circuit are also electrically connected with an electronic speed regulation circuit board. Through cooperation of the triode dynamic power supply circuit, the mutual inductor dynamic power supply circuit and the LED cascade circuit, voltage in the circuit can be accurately detected, dynamic adjustment and current limiting can be carried out when the voltage in the circuit is relatively high, the stability of the circuit voltage in the LED dynamic indicator for the small household appliances is improved, and the service life of the LED dynamic indicator is prolonged. Therefore, the use stability of the LED dynamic indicator for the small household appliances is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliance LED indicators, in particular to a small household appliance LED dynamic indicator. Background Art

[0002] The small household appliance LED dynamic indicator is a level indicator composed of light-emitting diodes (LEDs), mainly used to indicate the magnitude of the signal level. It not only has the function of indicating the signal level, but also can play a role in decorating and beautifying the panel. The existing small household appliance LED dynamic indicator only has a single indicating function. When the voltage in the circuit is relatively high, it cannot be dynamically adjusted, and when the voltage in the circuit is too high, it will affect the use of the small household appliance LED dynamic indicator. Therefore, we propose the small household appliance LED dynamic indicator. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and propose the small household appliance LED dynamic indicator.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] The small household appliance LED dynamic indicator includes an LED dynamic indicator body. The LED dynamic indicator body includes a triode dynamic power supply circuit, an LED cascade circuit and a transformer dynamic power supply circuit. The triode dynamic power supply circuit and the transformer dynamic power supply circuit are both electrically connected to the LED cascade circuit, and the triode dynamic power supply circuit and the transformer dynamic power supply circuit are also electrically connected to an electronic speed control circuit board.

[0006] Preferably, the triode dynamic power supply circuit includes a triode Q1. One end of a resistor R1-2 is electrically connected to the base of the triode Q1. One end of a resistor R1-3 is electrically connected to the emitter of the triode Q1. The other end of the resistor R1-3 is electrically connected to one end of a resistor R1-4. One end of the resistor R1-4 is electrically connected to one end of a resistor R1-1. The other end of the resistor R1-4 is electrically connected to the negative pole HV- of the dynamic high-voltage power supply. One end of the resistor R1-4 is electrically connected to the other end of the resistor R1-2. The other end of the resistor R1-1 is electrically connected to the positive pole HV+ of the dynamic high-voltage power supply. The positive pole HV+ of the dynamic high-voltage power supply is also electrically connected to the collector of the triode Q1. The positive pole HV+ of the dynamic high-voltage power supply is also electrically connected to one end of a capacitor C1. The other end of the capacitor C1 is electrically connected to one end of the resistor R1-3. The other end of the capacitor C1 is electrically connected to the negative pole of a diode DW1. The negative pole of the diode DW1 is electrically connected to one end of the resistor R1-3 and the collector of the triode Q1. The positive pole of the diode DW1 is electrically connected to the negative pole HV- of the dynamic high-voltage power supply. The positive pole of the diode DW1 is also electrically connected to the other end of the resistor R1-4.

[0007] Preferably, the LED cascade circuit includes diodes D1, D2, D3... Dn, and the positive and negative poles of diodes D1, D2, D3... Dn are connected in series in turn. One end of the same light-emitting diode LED1 is electrically connected to the negative pole of diode D1 and the positive pole of diode D2. One end of the same light-emitting diode LED2 is electrically connected to the negative pole of diode D2 and the positive pole of diode D3. One end of light-emitting diode LED3 is electrically connected to the negative pole of diode D3, and so on. One end of light-emitting diode LEDn is electrically connected to the negative pole of diode Dn. One end of resistor R2-1, one end of resistor R2-2, one end of resistor R2-3... one end of resistor R2-n are connected in series to light-emitting diodes LED1, LED2, LED3... LEDn in turn. The positive pole of diode D1 is electrically connected to one end of resistor R1-3, the other end of capacitor C1, the emitter of triode Q1, and the negative pole of diode DW1. The other ends of resistor R2-1, resistor R2-2, resistor R2-3... resistor R2-n are all electrically connected to the negative pole HV- of the dynamic high-voltage power supply, the positive pole of diode DW1, and the other end of resistor R1-4.

[0008] Preferably, the dynamic power supply circuit of the mutual inductor includes the positive pole of diode D3-1 electrically connected to one end of its output terminal. The negative pole of diode D3-1 is electrically connected to the negative pole of diode DW3-1. The positive pole of diode DW3-1 is electrically connected to the other end of the output terminal. The other end of the output terminal of the dynamic power supply circuit of the mutual inductor and the negative pole of diode D3-1 are both electrically connected to the LED cascade circuit.

[0009] Preferably, the electronic speed control circuit board connected to the dynamic power supply circuit of the triode includes an output tube, a rectifier bridge output circuit, and a DC motor MA. The rectifier bridge output circuit is electrically connected to the DC motor MA. The positive pole of the rectifier bridge output and the positive pole of the DC motor MA are both electrically connected to the positive pole HV+ of the dynamic high-voltage power supply. The negative pole of the rectifier bridge output and the negative pole of the DC motor MA are both electrically connected to the negative pole HV- of the dynamic high-voltage power supply.

[0010] Preferably, the electronic speed control circuit board electrically connected to the dynamic power supply circuit of the mutual inductor includes an output tube and a load motor MF. The load end of the load motor MF is electrically connected to one end of the input terminal of the dynamic power supply circuit of the mutual inductor. The output tube is electrically connected to the other end of the input terminal of the dynamic power supply circuit of the mutual inductor.

[0011] Preferably, the diode D1, the light-emitting diode LED1, and the resistor R2-1 form the first stage, the diode D2, the light-emitting diode LED2, and the resistor R2-2 form the second stage, and so on. The diode Dn, the light-emitting diode LEDn, and the resistor R2-n form the nth stage.

[0012] Compared with the existing technology, the beneficial effects of the present utility model are as follows:

[0013] Through the cooperation of the triode dynamic power supply circuit, the mutual inductor dynamic power supply circuit, and the LED cascade circuit, the present utility model can accurately detect the voltage in the circuit, and can perform dynamic adjustment and current limiting when the voltage in the circuit is high, improving the stability of the circuit voltage in the small household appliance LED dynamic indicator, thereby improving the use stability of the small household appliance LED dynamic indicator. Description of the Drawings

[0014] Figure 1 It is the connection circuit diagram of the triode dynamic power supply circuit and the LED cascade circuit in the small household appliance LED dynamic indicator proposed by the present utility model;

[0015] Figure 2 It is the circuit diagram of the triode dynamic power supply circuit in the small household appliance LED dynamic indicator proposed by the present utility model;

[0016] Figure 3 It is the circuit diagram of the LED cascade circuit in the small household appliance LED dynamic indicator proposed by the present utility model;

[0017] Figure 4 It is the circuit diagram of the connection between the mutual inductor dynamic power supply circuit and the LED cascade circuit in the small household appliance LED dynamic indicator proposed by the present utility model;

[0018] Figure 5 It is the circuit diagram of the connection between the triode dynamic power supply circuit and the electronic speed control circuit board in the small household appliance LED dynamic indicator proposed by the present utility model;

[0019] Figure 6 It is the circuit diagram of the connection between the mutual inductor dynamic power supply circuit and the electronic speed control circuit board in the small household appliance LED dynamic indicator proposed by the present utility model. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Refer to Figures 1-6, Small household appliance LED dynamic indicator, including an LED dynamic indicator body. The LED dynamic indicator body includes a triode dynamic power supply circuit, an LED cascade circuit, and a transformer dynamic power supply circuit. Both the triode dynamic power supply circuit and the transformer dynamic power supply circuit are electrically connected to the LED cascade circuit. Among them, the transformer dynamic power supply circuit includes the positive electrode of diode D3-1 electrically connected to one end of its output terminal. The negative electrode of diode D3-1 is electrically connected to the negative electrode of diode DW3-1. The positive electrode of diode DW3-1 is electrically connected to the other end of the output terminal. The other end of the output terminal of the transformer dynamic power supply circuit and the negative electrode of diode D3-1 are both electrically connected to the LED cascade circuit;

[0022] The triode dynamic power supply circuit and the transformer dynamic power supply circuit are also electrically connected to an electronic speed control circuit board;

[0023] Among them, the triode dynamic power supply circuit includes triode Q1. One end of resistor R1-2 is electrically connected to the base of triode Q1. One end of resistor R1-3 is electrically connected to the emitter of triode Q1. The other end of resistor R1-3 is electrically connected to one end of resistor R1-4. One end of resistor R1-4 is electrically connected to one end of resistor R1-1. The other end of resistor R1-4 is electrically connected to the negative pole HV- of the dynamic high-voltage power supply. One end of resistor R1-4 is electrically connected to the other end of resistor R1-2. The other end of resistor R1-1 is electrically connected to the positive pole HV+ of the dynamic high-voltage power supply. The positive pole HV+ of the dynamic high-voltage power supply is also electrically connected to the collector of triode Q1. The positive pole HV+ of the dynamic high-voltage power supply is also electrically connected to one end of capacitor C1. The other end of capacitor C1 is electrically connected to one end of resistor R1-3. The other end of capacitor C1 is electrically connected to the negative electrode of diode DW1. The negative electrode of diode DW1 is electrically connected to one end of resistor R1-3 and the collector of triode Q1. The positive electrode of diode DW1 is electrically connected to the negative pole HV- of the dynamic high-voltage power supply. The positive electrode of diode DW1 is also electrically connected to the other end of resistor R1-4;

[0024] Among them, the electronic speed control circuit board connected to the triode dynamic power supply circuit includes an output tube, a rectifier bridge output circuit, and a DC motor MA. The rectifier bridge output circuit is electrically connected to the DC motor MA. The positive pole of the rectifier bridge output and the positive pole of the DC motor MA are both electrically connected to the positive pole HV+ of the dynamic high-voltage power supply. The negative pole of the rectifier bridge output and the negative pole of the DC motor MA are both electrically connected to the negative pole HV- of the dynamic high-voltage power supply;

[0025] The LED cascade circuit includes diodes D1, D2, D3... Dn, and the positive and negative poles of diodes D1, D2, D3... Dn are connected in series in turn. The negative pole of diode D1 and the positive pole of diode D2 are electrically connected to one end of the same light-emitting diode LED1. The negative pole of diode D2 and the positive pole of diode D3 are electrically connected to one end of the same light-emitting diode LED2. The negative pole of diode D3 is electrically connected to one end of light-emitting diode LED3, and so on. The negative pole of diode Dn is electrically connected to one end of light-emitting diode LEDn. The light-emitting diodes LED1, LED2, LED3... LEDn are connected in series to one end of resistors R2-1, R2-2, R2-3... R2-n in turn. The positive pole of diode D1 is electrically connected to one end of resistor R1-3, the other end of capacitor C1, the emitter of triode Q1, and the negative pole of diode DW1. The other ends of resistors R2-1, R2-2, R2-3... R2-n are all electrically connected to the negative pole HV- of the dynamic high-voltage power supply, the positive pole of diode DW1, and the other end of resistor R1-4. Diode D1, light-emitting diode LED1, and resistor R2-1 form the first stage. Diode D2, light-emitting diode LED2, and resistor R2-2 form the second stage, and so on. Diode Dn, light-emitting diode LEDn, and resistor R2-n form the nth stage, which can achieve the effect of dynamic indication;

[0026] The electronic speed control circuit board electrically connected to the mutual inductor dynamic power supply circuit includes an output tube and a load motor MF. The load end of the load motor MF is electrically connected to one end of the input end of the mutual inductor dynamic power supply circuit, and the output tube is electrically connected to the other end of the input end of the mutual inductor dynamic power supply circuit. Through the cooperation of the triode dynamic power supply circuit, the mutual inductor dynamic power supply circuit, and the LED cascade circuit, the present invention can accurately detect the voltage in the circuit, and can perform dynamic adjustment and current limiting when the voltage in the circuit is relatively high, improving the stability of the circuit voltage in the small household appliance LED dynamic indicator, thereby improving the use stability of the small household appliance LED dynamic indicator.

[0027] Working principle: When in use, the LED cascade circuit forms the first stage through diode D1, light-emitting diode LED1, and resistor R2-1, the second stage through diode D2, light-emitting diode LED2, and resistor R2-2, and so on. Diode Dn, light-emitting diode LEDn, and resistor R2-n form the nth stage, which can achieve the effect of dynamic indication;

[0028] The triode dynamic power supply circuit is composed of a resistor R1-1, a resistor R1-2, a resistor R1-3, a resistor R1-4, a triode Q1, a capacitor C1, and a diode DW1 connected in sequence, forming a dynamic step-down and current-limiting circuit. At the same time, in cooperation with the set mutual inductor power supply circuit, the two input points are respectively electrically connected to the load of the output tube and the load motor in the electronic speed control circuit board. The dynamic voltage is output through mutual induction to achieve the effect of accurately measuring the voltage in the LED cascade circuit. Moreover, when the measured voltage is relatively high, the triode dynamic power supply circuit can perform dynamic step-down and current-limiting to improve the voltage stability in the LED cascade circuit, thereby improving the use stability of the small household appliance LED dynamic indicator.

[0029] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A small household appliance LED dynamic indicator, comprising an LED dynamic indicator body, characterized in that: The LED dynamic indicator body includes a triode dynamic power supply circuit, an LED cascade circuit and a transformer dynamic power supply circuit. The triode dynamic power supply circuit and the transformer dynamic power supply circuit are both electrically connected to the LED cascade circuit. The triode dynamic power supply circuit and the transformer dynamic power supply circuit are also electrically connected to an electronic speed regulation circuit board.

2. The LED dynamic indicator for small household appliances according to claim 1, characterized in that: The transistor dynamic power supply circuit includes a transistor Q1, a base of the transistor Q1 is electrically connected to one end of a resistor R1-2, an emitter of the transistor Q1 is electrically connected to one end of a resistor R1-3, the other end of the resistor R1-3 is electrically connected to one end of a resistor R1-4, one end of the resistor R1-4 is electrically connected to one end of a resistor R1-1, the other end of the resistor R1-4 is electrically connected to a negative electrode HV- of a dynamic high-voltage power supply, one end of the resistor R1-4 is electrically connected to the other end of the resistor R1-2, and the other end of the resistor R1-1 is electrically connected to a positive electrode HV- of a dynamic high-voltage power supply. The positive electrode HV+ of the dynamic high-voltage power supply is also electrically connected to the collector of the transistor Q1. The positive electrode HV+ of the dynamic high-voltage power supply is also electrically connected to one end of the capacitor C1. The other end of the capacitor C1 is electrically connected to one end of the resistor R1-3. The other end of the capacitor C1 is electrically connected to the cathode of the diode DW1. The cathode of the diode DW1 is electrically connected to one end of the resistor R1-3 and the collector of the transistor Q1. The anode of the diode DW1 is electrically connected to the negative electrode HV- of the dynamic high-voltage power supply. The anode of the diode DW1 is also electrically connected to the other end of the resistor R1-4.

3. The LED dynamic indicator for small household appliances according to claim 2, characterized in that: The LED cascade circuit includes a diode D1, a diode D2, a diode D3 ... a diode Dn, and the positive and negative electrodes of the diodes D1, D2, D3 ... Dn are connected in series in sequence, the cathode of the diode D1 and the anode of the diode D2 are electrically connected to one end of the same light-emitting diode LED1, the cathode of the diode D2 and the anode of the diode D3 are electrically connected to one end of the same light-emitting diode LED2, the cathode of the diode D3 is electrically connected to one end of the light-emitting diode LED3, and so on, the cathode of the diode Dn is electrically connected to one end of the light-emitting diode LEDn, and the cathode of the light-emitting diodes LED1, The light-emitting diodes LED2, LED3, ... LEDn are connected in series with one end of the resistor R2-1, one end of the resistor R2-2, one end of the resistor R2-3, ... one end of the resistor R2-n, respectively; the anode of the diode D1 is electrically connected to one end of the resistor R1-3, the other end of the capacitor C1, the emitter of the transistor Q1 and the cathode of the diode DW1; the other end of the resistor R2-1, the other end of the resistor R2-2, the other end of the resistor R2-3, ... the other end of the resistor R2-n are all electrically connected to the negative electrode HV- of the dynamic high-voltage power supply, the anode of the diode DW1 and the other end of the resistor R1-4.

4. The LED dynamic indicator for small household appliances according to claim 1, characterized in that: The transformer dynamic power supply circuit includes an anode of a diode D3-1 electrically connected to one end of its output end, a cathode of the diode D3-1 electrically connected to a cathode of a diode DW3-1, an anode of the diode DW3-1 electrically connected to the other end of the output end, and the other end of the output end of the transformer dynamic power supply circuit and the cathode of the diode D3-1 are both electrically connected to the LED cascade circuit.

5. The LED dynamic indicator for small household appliances according to claim 1, characterized in that: The electronic speed control circuit board connected to the triode dynamic power supply circuit includes an output tube, a positive current bridge output circuit and a DC motor MA. The positive current bridge output circuit and the DC motor MA are electrically connected. The positive pole of the positive current bridge output and the positive pole of the DC motor MA are both electrically connected to the positive pole HV+ of the dynamic high-voltage power supply, and the negative pole of the positive current bridge output and the negative pole of the DC motor MA are both electrically connected to the negative pole HV- of the dynamic high-voltage power supply.

6. The LED dynamic indicator for small household appliances according to claim 1, characterized in that: The electronic speed control circuit board electrically connected to the transformer dynamic power supply circuit includes an output tube and a load motor MF, the load end of the load motor MF is electrically connected to one end of the input end of the transformer dynamic power supply circuit, and the output tube is electrically connected to the other end of the input end of the transformer dynamic power supply circuit.

7. The LED dynamic indicator for small household appliances according to claim 3, characterized in that: The diode D1, the light emitting diode LED1 and the resistor R2-1 form the first stage, the diode D2, the light emitting diode LED2 and the resistor R2-2 form the second stage, and so on, the diode Dn, the light emitting diode LEDn and the resistor R2-n form the nth stage.

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