CN215344362U

CN215344362U - Air purifier power of circuit of striking sparks is prevented in area

Info

Publication number: CN215344362U
Application number: CN202022564304.4U
Authority: CN
Inventors: 蒙庆文; 肖良文
Original assignee: Guangzhou Qingyuan Electronics Co ltd
Current assignee: Guangzhou Qingyuan Electronics Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-12-28
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses an air purifier power supply with an anti-sparking circuit, which comprises a power interface CN3, a chip U1 and a diode D1, wherein a port 2 of the power interface CN3 is connected with a resistor R23, a capacitor C3 and a pin 1 of the chip U1, and the other end of the resistor R23 is connected with a resistor R30, a capacitor C4 and a grid electrode of a MOS transistor Q1. The air purifier power supply with the anti-ignition circuit is conducted in a delayed mode by adding a group of N-type effect forming tubes at the GND end of the input power supply of the electrical appliance, so that the power supply is conducted with a large-use capacitor of the power circuit on the electrical appliance after the adapter is completely contacted with the socket of the electrical appliance. Finally, the phenomenon of contact sparking is prevented.

Description

Air purifier power of circuit of striking sparks is prevented in area

Technical Field

The utility model relates to the technical field of power supplies, in particular to an air purifier power supply with an anti-sparking circuit.

Background

The power adapter is a power supply conversion device of small portable electronic equipment and electronic appliances, generally comprises components such as a shell, a transformer, an inductor, a capacitor, a control IC (integrated circuit), a PCB (printed circuit board) and the like, and the working principle of the power adapter is that alternating current input is converted into direct current output; according to the connection mode, the device can be divided into a wall-inserting type and a desktop type. The optical fiber cable is widely matched with equipment such as security cameras, notebook computers, set top boxes, routers and small-sized electrical products. When a user inserts the power adapter into an electric appliance, the phenomenon of ignition is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an air purifier power supply with an anti-ignition circuit, which aims to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

an air purifier power supply with an anti-spark circuit comprises a power interface CN3, a chip U1 and a diode D1, wherein a port 2 of the power interface CN3 is connected with a resistor R23, a capacitor C3 and a pin 1 of a chip U1, the other end of a resistor R23 is connected with a resistor R30, a capacitor C4 and the grid electrode of a MOS tube Q1, the other end of a resistor R30 is connected with the other end of a capacitor C4 and the source electrode of a MOS tube Q1, the drain electrode of the MOS tube Q1 is connected with the other end of a capacitor C3, a pin 3 of a chip U1, a pin 5 of a chip U1, a pin 0 of a chip U1, the anode of the diode D1, a capacitor C1 and a capacitor C4, a pin 2 of the chip U1 is connected with the cathode of an inductor L4 and a diode D1, and a pin 4 of a chip U1 is connected with the other end of an inductor L4, the other end of a capacitor C4 and the other end of a capacitor C1.

As a further technical scheme of the utility model: the input voltage of the power interface CN3 is 24V.

As a further technical scheme of the utility model: the model of the chip U1 is LM 2596.

As a further technical scheme of the utility model: the type of the MOS transistor Q1 is 15N 10.

As a further technical scheme of the utility model: the diode D1 is a zener diode.

Compared with the prior art, the utility model has the beneficial effects that: the air purifier power supply with the anti-ignition circuit is conducted in a delayed mode by adding a group of N-type effect forming tubes at the GND end of the input power supply of the electrical appliance, so that the power supply is conducted with a large-use capacitor of the power circuit on the electrical appliance after the adapter is completely contacted with the socket of the electrical appliance. Finally, the phenomenon of contact sparking is prevented.

Drawings

Fig. 1 is a circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1, an air purifier power supply with an anti-sparking circuit includes a power interface CN3, a chip U1 and a diode D1, a port 2 of the power interface CN3 is connected to a resistor R23, a capacitor C3 and a pin 1 of the chip U1, the other end of the resistor R23 is connected to a resistor R30, a capacitor C4 and a gate of a MOS transistor Q1, the other end of the resistor R30 is connected to the other end of the capacitor C4 and a source of the MOS transistor Q1, a drain of the MOS transistor Q1 is connected to the other end of the capacitor C3, a pin 3 of the chip U1, a pin 5 of the chip U1, a pin 0 of the chip U1, an anode of the diode D1, a capacitor C1 and a capacitor C4, a pin 2 of the chip U1 is connected to an inductor L4 and a cathode of the diode D1, and a pin 4 of the chip U1 is connected to the other end of the inductor L4, the other end of the capacitor C4 and the other end of the capacitor C1. The design adopts a large power supply filter capacitor C3(1000 uf/35V). Since the capacitor begins to store no voltage (uncharged), the current charged by the capacitor when the power adapter is just plugged in is large, so that the phenomenon of sparking can occur when a user plugs the power adapter into a power socket of the machine for instantaneous contact, and the process time is short. The utility model adds a field effect transistor U2 to delay and conduct GND of an input power supply for delay, an N-type field effect transistor (U2) is added at the negative pole (GND) end of the input power supply, the control end of U2 is connected with two electrons R23100K omega, R3027K omega and a capacitor C4/1UF, the two electrons provide conduction voltage required by U2 conduction through 24V and GND partial voltage, and the capacitor C4 at the control end of U2 delays the voltage to reach the conduction voltage through the charging process, thereby delaying the conduction for a period of time. So that adapter power does not flow to capacitor C3 until the adapter is fully in contact with the air purifier's power outlet. The capacitor C3 will not ignite during charging.

The input voltage of power interface CN3 is 24V. Chip U1 is model LM 2596. The model of the MOS transistor Q1 is 15N 10. The diode D1 is a zener diode.

Example 2: on the basis of example 1: the protection device is connected with the background system in a wireless mode, and wiring is facilitated by adopting the wireless mode.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An air purifier power supply with an anti-spark circuit comprises a power interface CN3, a chip U1 and a diode D1, and is characterized in that a port 2 of the power interface CN3 is connected with a resistor R23, a capacitor C3 and a pin 1 of a chip U1, the other end of a resistor R23 is connected with a resistor R30, a capacitor C4 and a grid electrode of a MOS tube Q1, the other end of a resistor R30 is connected with the other end of a capacitor C4 and a source electrode of the MOS tube Q4, a drain electrode of the MOS tube Q4 is connected with the other end of the capacitor C4, a pin 3 of the chip U4, a pin 5 of the chip U4, a pin 0 of the chip U4, an anode of the diode D4, the capacitor C4 and a cathode of the diode D4, a pin 2 of the chip U4 is connected with an inductor L4 and a cathode of the diode D4, and a pin 4 of the chip U4 is connected with the other end of the inductor L4, the other end of the capacitor C4 and the other end of the capacitor C4.

2. The power supply of air purifier with circuit of preventing striking sparks of claim 1, wherein the input voltage of the power interface CN3 is 24V.

3. The air purifier power supply with the anti-sparking circuit is characterized in that the model of the chip U1 is LM 2596.

4. The power supply of an air purifier with an anti-sparking circuit as claimed in claim 1, wherein the MOS transistor Q1 is 15N10 type.

5. An air purifier power supply with an anti-sparking circuit as claimed in any one of claims 1-4, characterized in that the diode D1 is a zener diode.