CN220292218U

CN220292218U - Square wave signal control circuit capable of outputting DC48V-50HZ

Info

Publication number: CN220292218U
Application number: CN202321770847.9U
Authority: CN
Inventors: 李伟; 陈耀显; 林炜旭
Original assignee: Jiangmen Huahuihui Intelligent Power Technology Co ltd
Current assignee: Jiangmen Huahuihui Intelligent Power Technology Co ltd
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2024-01-02
Anticipated expiration: 2033-07-06

Abstract

The utility model belongs to the technical field of control circuits, and particularly provides a square wave signal control circuit capable of outputting DC48V-50HZ, which is characterized in that through inputting AC220V voltage of mains supply, filtering is carried out through a chip resistor R2, a chip resistor R3, a chip resistor R6 voltage division and a chip capacitor C1 in a front-end filtering control circuit, power supply conduction is carried out on a pin 1 and a pin 2 of a photoelectric coupler U1, light emitting diodes in the photoelectric coupler U1 emit light, high and low voltage is further output to one sides of the pin 3 and the pin 4, the voltage amplitude is 48V, and as the output 48V+ voltage is controlled to be conducted and disconnected through a PNP tertiary tube, the voltage of 48V+ and 0V voltage are output to an anode V+ of an output power supply, and the control frequency of the high and low voltage is 50HZ frequency controlled by the input photoelectric coupler U1, so that square wave signals of DC48V-50HZ are output.

Description

Square wave signal control circuit capable of outputting DC48V-50HZ

Technical Field

The utility model belongs to the technical field of control circuits, and particularly relates to a square wave signal control circuit capable of outputting DC48V-50 HZ.

Background

Because the intelligent product is more and more popular and widely applied to various places such as home, shops and hotels, the intelligent product of the rice home platform which is deeply favored by the market is more and more popular and applied, the matched application technology supporting the intelligent product of the rice home is of natural origin, especially the application of the magnetic attraction lamp in the main lamp is not needed, the detection of the flexible switch function is realized by using the square wave signal control of 48V-50HZ, and therefore, a square wave signal control circuit capable of outputting DC48V-50HZ is needed urgently.

Disclosure of Invention

Aiming at the technical defects in the background technology, the utility model provides a square wave signal control circuit capable of outputting DC48V-50HZ, which solves the technical problems and meets the actual requirements, and the specific technical scheme is as follows:

the square wave signal control circuit capable of outputting DC48V-50HZ comprises a front-end filter control circuit, wherein the front-end filter control circuit is electrically connected with a photoelectric coupler U1, and the photoelectric coupler U1 is electrically connected with a PNP transistor.

As an improvement of the above scheme, the photo coupler U1 is provided with 4 pins, namely, pin 1, pin 2, pin 3 and pin 4.

As the improvement of above-mentioned scheme, front end filter control circuit includes chip resistor R2, chip resistor R3, chip resistor R6 and chip capacitor C1, chip resistor R2 electricity is connected with chip resistor R3, chip resistor R3 electricity is connected with chip resistor R6, chip resistor R6 electricity is connected with chip capacitor C1.

As an improvement of the scheme, after the input commercial power AC voltage is subjected to sub-filter by the front-end filter control circuit, power is supplied to the pin 1 and the pin 2 of the photoelectric coupler U1 to be conducted, the LED in the photoelectric coupler U1 emits light, and then high and low voltages are output to one sides of the pin 3 and the pin 4, and the voltage amplitude is 48V.

As an improvement of the above scheme, the control frequency of the high voltage and the low voltage is 50HZ controlled by the input photocoupler U1.

The utility model has the beneficial effects that: the AC220V voltage is input into the photoelectric coupler U1, the LED in the photoelectric coupler U1 is used for emitting light, the high voltage and the low voltage are output to one sides of the pin 3 and the pin 4, the voltage amplitude is 48V, the 48V+ voltage is output to the positive pole V+ of the output power supply through controlling the on and off of the PNP tertiary tube, the voltage of the 48V+ and the 0V voltage are output to the positive pole V+ of the output power supply, and the control frequency of the high voltage and the low voltage is 50HZ frequency controlled by the input photoelectric coupler U1, so that the square wave signal of DC48V-50HZ is output.

Drawings

FIG. 1 is a circuit diagram of a square wave signal control circuit capable of outputting DC48V-50HZ according to the present utility model.

Detailed Description

Embodiments of the present utility model will be described below with reference to the accompanying drawings and examples, but the embodiments of the present utility model are not limited to the following examples, and the present utility model relates to the relevant essential parts in the art, and should be regarded as known and understood by those skilled in the art.

As shown in FIG. 1, the square wave signal control circuit capable of outputting DC48V-50HZ comprises a front-end filter control circuit, wherein the front-end filter control circuit is electrically connected with a photoelectric coupler U1, and the photoelectric coupler U1 is electrically connected with a PNP (plug and play) transistor.

As shown in fig. 1, the photo-coupler U1 is provided with 4 pins, i.e., pin 1, pin 2, pin 3, and pin 4.

As shown in fig. 1, it should be noted that the front-end filtering control circuit includes a chip resistor R2, a chip resistor R3, a chip resistor R6, and a chip capacitor C1, where the chip resistor R2 is electrically connected with the chip resistor R3, the chip resistor R3 is electrically connected with the chip resistor R6, and the chip resistor R6 is electrically connected with the chip capacitor C1.

As shown in fig. 1, after the input AC voltage is subjected to sub-filtering by the front-end filtering control circuit, the input AC voltage is supplied to the pin 1 and the pin 2 of the photocoupler U1 to be turned on, and the led in the photocoupler U1 emits light, so that high and low voltages are output to one sides of the pin 3 and the pin 4, and the voltage amplitude is 48V.

As shown in fig. 1, the control frequency of the high and low voltages is 50HZ controlled by the input photocoupler U1.

Working principle: the AC220V voltage is input into the photoelectric coupler U1, the LED in the photoelectric coupler U1 is powered on through the voltage division of the chip resistor R2, the chip resistor R3 and the chip resistor R6 in the front-end filtering control circuit and the chip capacitor C1, the LED in the photoelectric coupler U1 emits light, the LED outputs high and low voltages to one sides of the pin 3 and the pin 4, the voltage amplitude is 48V, the 48V+ voltage is output to the positive electrode V+ of the output power supply through controlling the on and off of the PNP triode, the voltage and the 0V voltage of the output power supply are output, and the control frequency of the high and low voltages is 50HZ frequency controlled by the input photoelectric coupler U1, so that the square wave signal of DC48V-50HZ is output.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. The square wave signal control circuit capable of outputting DC48V-50HZ comprises a front-end filter control circuit, and is characterized in that the front-end filter control circuit is electrically connected with a photoelectric coupler U1, and the photoelectric coupler U1 is electrically connected with a PNP transistor.

2. The square wave signal control circuit capable of outputting DC48V-50HZ according to claim 1, wherein the optocoupler U1 is provided with 4 pins, pin 1, pin 2, pin 3 and pin 4, respectively.

3. The square wave signal control circuit capable of outputting DC48V-50HZ according to claim 1, wherein the front-end filter control circuit comprises a chip resistor R2, a chip resistor R3, a chip resistor R6 and a chip capacitor C1, wherein the chip resistor R2 is electrically connected with the chip resistor R3, the chip resistor R3 is electrically connected with the chip resistor R6, and the chip resistor R6 is electrically connected with the chip capacitor C1.

4. The square wave signal control circuit capable of outputting DC48V-50HZ according to claim 2, wherein the input commercial power AC voltage is subjected to sub-filter pressing by the front-end filter control circuit to supply power to the pin 1 and the pin 2 of the photoelectric coupler U1 for conduction, and the LED in the photoelectric coupler U1 emits light to output high and low voltages to one side of the pin 3 and the pin 4, and the voltage amplitude is 48V.

5. The square wave signal control circuit capable of outputting DC48V-50HZ according to claim 4, wherein the control frequency of the high and low voltages is 50HZ controlled by the input photocoupler U1.