CN212784772U

CN212784772U - AC115V and AC230V input automatic switching circuit

Info

Publication number: CN212784772U
Application number: CN202021368064.4U
Authority: CN
Inventors: 明伟
Original assignee: Shenzhen Xinmaosheng Power Supply Co ltd
Current assignee: Shenzhen Xinmaosheng Power Supply Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-03-23
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses an AC115V and AC230V input automatic switching circuit, including rectifier diode BD1, rectifier diode BD1 wherein two feet are connected with DC320V power, rectifier diode BD1 other two feet are connected with AC115V and AC230V power, be equipped with electric capacity C5 and electric capacity C6 between rectifier diode BD1 and DC320V power, electric capacity C5 and electric capacity C6 are established ties, rectifier diode BD1 and electric capacity C5 and electric capacity C6 are parallelly connected, rectifier diode BD1 still is connected with diode D1, diode D1 is connected with resistor R1, R2, R4, R5, zener diode ZD1, ZD2, electrolytic capacitance C3 and electric capacity C2; this circuit can be according to the size of input voltage's range value, and after equipment circular telegram, the product does not need manual switching according to input voltage range value, and the automatic circuit that switches that carries on does not save the cost of labor, and it is safe convenient to use simultaneously.

Description

AC115V and AC230V input automatic switching circuit

Technical Field

The utility model relates to a switching circuit specifically is an AC115V and AC230V input automatic switching circuit.

Background

The alternating current voltage used in China is different from the alternating current voltage used in foreign countries, the alternating current voltage used in China is 220V, the alternating current voltage used in America is 110V, the product is suitable for two different voltages, a manual change-over switch can be made on the product in the market at present, when the product is used in different countries, the alternating current voltage used is automatically changed over through the manual change-over switch, the manufacturing cost can be increased by the method, the product is not convenient to use, manual operation is needed, the switch is forgotten to be pulled, the device can be considered to be bad, and the device cannot be used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an AC115V and AC230V input automatic switching circuit to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an AC115 and AC230 input automatic switching circuit comprises a rectifier diode BD, wherein two pins of the rectifier diode BD are connected with a DC320 power supply, the other two pins of the rectifier diode BD are connected with an AC115 and an AC230 power supply, a capacitor C and a capacitor C are arranged between the rectifier diode BD and the DC320 power supply and are connected in series, the rectifier diode BD is connected with the capacitor C and the capacitor C in parallel, the rectifier diode BD is further connected with a diode D, the diode D is connected with resistors R, zener diodes ZD, an electrolytic capacitor C and a capacitor C, the resistors R and R are connected in series, the zener diodes ZD and ZD are connected in series, the resistor R is connected with the capacitor C in series, the resistor R, the zener diode ZD, the resistor R and the electrolytic capacitor C are connected in parallel, the other end of the capacitor C is connected with the capacitor C through the resistor R and the 3 pins of a bidirectional trigger diode T, and the 1 pin, the 2-pin diac T1 is connected in line between the capacitors C5, C6.

A pulse-preventing diode VD is connected to the pin 3 of the diac T1, a capacitor C1 is connected between the resistor R2 and the voltage-stabilizing diode, the capacitor C1 is connected to the pin 3 of the voltage-stabilizing source Q, the pin 1 of the voltage-stabilizing source Q is connected to the resistor R5, and the pin 2 of the voltage-stabilizing source Q is connected to the pin 1 of the diac T1.

Compared with the prior art, the beneficial effects of the utility model are that: this circuit can be according to the size of input voltage's range value, and after equipment circular telegram, the product does not need manual switching according to input voltage range value, and the automatic circuit that switches that carries on does not save the cost of labor, and it is safe convenient to use simultaneously.

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 described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, in an embodiment of the present invention, an AC115V and AC230V input automatic switching circuit includes a rectifier diode BD1, a rectifier diode BD1 having two legs connected to a DC320V power supply, a rectifier diode BD1 having two other legs connected to AC115V and AC230V power supplies, a capacitor C5 and a capacitor C6 provided between the rectifier diode BD1 and the DC320V power supplies, a capacitor C5 and a capacitor C6 connected in series, a rectifier diode BD 6 and a capacitor C6 connected in parallel, a rectifier diode D6 connected in parallel to the capacitor C6, a diode D6 connected to the rectifier diode D6, a resistor R6, a capacitor C6, a zener diode R6, a ZD 6, an electrolytic capacitor C6, a resistor R6 and an R6 connected in series, a zener diode ZD 6 and a resistor ZD 6 connected in series, a resistor R6 and a capacitor C6 connected in parallel with a capacitor C6, and a capacitor C6 connected in parallel through a bidirectional trigger resistor R6 and a capacitor C6 connected in parallel, pin 1 of the diac T1 is connected to the capacitor C2, and pin 2 of the diac T1 is connected to the line between the capacitors C5 and C6.

When the alternating voltage is 90V-132V, the bidirectional trigger diode T1 is conducted, and the bidirectional trigger diode, the rectifier diode BD1, the capacitor C5 and the capacitor C6 form voltage-doubling rectification, so that the capacitor C5 + end direct voltage is about 320V, and the load normally works; when the alternating voltage 180 and 264V are input, the bidirectional trigger diode T1 is cut off at the position of the bidirectional controllable silicon, and the direct voltage at the position of the capacitor C5 and the end of the capacitor C is about 320V, so that the load normally works.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 AC115V and AC230V input automatic switching circuit is characterized by comprising a rectifier diode BD1, a rectifier diode BD1, a DC320V power supply connected with two pins of the rectifier diode BD1, an AC115V and an AC230V power supply connected with the other two pins of the rectifier diode BD1, a capacitor C5 and a capacitor C6 arranged between the rectifier diode BD1 and the DC320V power supply, a capacitor C5 and a capacitor C6 connected in series, a rectifier diode BD 6 connected in parallel with the capacitor C6 and the capacitor C6, a diode D6 connected with the rectifier diode BD 6, a resistor R6, a zener diode ZD 6, an electrolytic capacitor C6, a resistor R6 and a R6 connected in series, a zener diode ZD 6 and a capacitor C6 connected in series, a resistor R6 and a capacitor C6 connected in parallel with the capacitor C6, a resistor ZD 6 connected in parallel with the capacitor C6, a resistor R6 and a capacitor C6 connected in parallel with the capacitor C6, and a capacitor C6 connected in parallel with a bidirectional trigger resistor R6 and a capacitor, pin 1 of the diac T1 is connected to the capacitor C2, and pin 2 of the diac T1 is connected to the line between the capacitors C5 and C6.

2. The AC115V and AC230V input automatic switching circuit as claimed in claim 1, wherein a pulse-preventing diode VD is further connected to the 3-pin of the diac T1.

3. The automatic switching circuit for the AC115V and the AC230V inputs as claimed in claim 2, wherein a capacitor C1 is further connected between the resistor R2 and the Zener diode, the capacitor C1 is connected with 3 pins of the Zener Q, 1 pin of the Zener Q is connected with the resistor R5, and 2 pins of the Zener Q are connected with 1 pin of the diac T1.