CN205960977U - Multi -functional DC power supply controller - Google Patents

Abstract

The utility model discloses a multifunctional DC power supply controller, which comprises an inductor L1, a rectifier bridge T, a diode D2 and a triode V2, the port 1 of the rectifier bridge T is connected with a resistor R4 and a capacitor C1, and the other end of the capacitor C1 is connected with a resistor The other end of R4 is connected to 220V AC, port 3 of rectifier bridge T is connected to the other end of 220V AC, port 2 of rectifier bridge T is connected to inductor L1 and capacitor C2, and the other end of capacitor C2 is connected to the other end of inductor L2 and rectifier bridge T port 4. The multifunctional DC power supply controller of the utility model has simple structure and few components, and a π-type filter is set in the circuit, which can suppress harmonic interference. Therefore, it has the advantages of various functions, precise control and convenient use.

Description

A Multifunctional DC Power Controller

technical field

The utility model relates to a power supply, in particular to a multifunctional DC power supply controller.

Background technique

With the continuous improvement of people's living standards, electronic equipment has become an indispensable part of life, especially various household appliances have brought great convenience to people's life and work, such electronic devices require a precision High DC power supply with wide application range. There are many types of DC power supplies in the existing market, especially low-end products. Although low-end products have a price advantage over high-end products, the quality is often not satisfactory, especially for voltage regulators that can be used for generators. Common power supplies All have defects such as single function, short life, difficult debugging and maintenance, and although high-end products are reliable in quality, safe and stable, their high prices are also prohibitive. Therefore it needs to be improved.

Utility model content

The purpose of this utility model is to provide a multi-functional direct current power supply controller to solve the problems raised in the above-mentioned background technology.

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

A multifunctional DC power supply controller, comprising an inductor L1, a rectifier bridge T, a diode D2 and a triode V2, the port 1 of the rectifier bridge T is connected to a resistor R4 and a capacitor C1, and the other end of the capacitor C1 is connected to the other end of the resistor R4 and 220V AC, port 3 of rectifier bridge T is connected to the other end of 220V AC, port 2 of rectifier bridge T is connected to inductor L1 and capacitor C2, and the other end of capacitor C2 is connected to the other end of inductor L2 and port 4 of rectifier bridge T, inductor L1 The other end of the resistor R1 is connected to the capacitor C3, resistor R1, resistor R2, resistor R3, the cathode of the diode D3, the relay K and the contact K-1 of the relay K, the other end of the resistor R1 is connected to a fixed end of the potentiometer RP1, and the inductor L2 The other end is connected to the other end of the capacitor C3, the sliding end of the potentiometer RP1, the other fixed end of the potentiometer RP2, the emitter of the triode V1, the emitter of the triode V2 and the load A, and the sliding end of the potentiometer RP1 is connected to the diode D2. The cathode, the anode of the diode D2 is connected to the base of the triode V1, the collector of the triode V1 is connected to the anode of the diode D1 and the other end of the resistor R2, the cathode of the diode D1 is connected to the anode of the diode D4 and the base of the triode V2, and the other end of the resistor R3 One end is connected to the other fixed end of the potentiometer RP2, and the sliding end of the potentiometer RP2 is connected to the cathode of the diode D4. The collector of the transistor V2 is connected to the anode of the diode D3 and the other end of the relay K, and the other end of the contact K-1 of the relay K Connect the other end of load A.

As a preferred solution of the present utility model: both the diode D2 and the diode D4 are Zener diodes.

As a preferred solution of the present utility model: the relay K is a normally closed contact relay.

Compared with the prior art, the beneficial effects of the utility model are: the utility model multifunctional direct current power supply controller has a simple structure, fewer components, and a π-type filter is set in the circuit, which can suppress harmonic interference and utilize voltage stabilization at the same time The overvoltage and undervoltage protection modules composed of tubes and triodes can effectively protect the safety of electrical loads, so it has the advantages of multiple functions, precise control and convenient use.

Description of drawings

Figure 1 is a circuit diagram of a multifunctional DC power controller.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, a multifunctional DC power supply controller, including an inductor L1, a rectifier bridge T, a diode D2 and a triode V2, the port 1 of the rectifier bridge T is connected to a resistor R4 and a capacitor C1, and the other end of the capacitor C1 is connected to a resistor The other end of R4 is connected to 220V AC, port 3 of rectifier bridge T is connected to the other end of 220V AC, port 2 of rectifier bridge T is connected to inductor L1 and capacitor C2, and the other end of capacitor C2 is connected to the other end of inductor L2 and rectifier bridge T Port 4, the other end of the inductor L1 is connected to the capacitor C3, the resistor R1, the resistor R2, the resistor R3, the cathode of the diode D3, the relay K and the contact K-1 of the relay K, and the other end of the resistor R1 is connected to a fixed potentiometer RP1 The other end of the inductor L2 is connected to the other end of the capacitor C3, the sliding end of the potentiometer RP1, the other fixed end of the potentiometer RP2, the emitter of the triode V1, the emitter of the triode V2 and the load A, and the sliding end of the potentiometer RP1 The terminal is connected to the cathode of the diode D2, the anode of the diode D2 is connected to the base of the transistor V1, the collector of the transistor V1 is connected to the anode of the diode D1 and the other end of the resistor R2, and the cathode of the diode D1 is connected to the anode of the diode D4 and the base of the transistor V2 , the other end of the resistor R3 is connected to the other fixed end of the potentiometer RP2, the sliding end of the potentiometer RP2 is connected to the cathode of the diode D4, the collector of the transistor V2 is connected to the anode of the diode D3 and the other end of the relay K, and the contact K of the relay K The other end of -1 is connected to the other end of load A.

Both the diode D2 and the diode D4 are Zener diodes. Relay K is a normally closed contact relay.

The working principle of the utility model is: after the 220V mains voltage is stepped down by the resistance-capacitance step-down circuit composed of the resistor R1 and the capacitor C1, it is rectified through the rectifier bridge T, and the DC voltage output from the port 2 of the rectifier bridge T Enter the π-type filter composed of capacitor C2, capacitor C3, inductor L1 and inductor L2. The π-type filter can eliminate the harmonic interference of the mains. Under normal voltage conditions, D2 and V1 are on, and D4 and V2 are off. So the relay K is not working. When overvoltage occurs, the regulator tube D4 will break down and conduct, V2 will conduct at the same time, the relay K will pull in, its contact K-1 will be disconnected, and the load A will lose power, which plays the role of overvoltage protection. When the power supply voltage is lower than the undervoltage threshold, D2 and V1 will turn from on to off, and the collector voltage of V1 will rise, making D1 and V2 on, and the relay K will pull in, which will also cut off the load A.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (3)

1. a kind of multifunctional DC power supply controller, including inductance L1, rectifier bridge T, diode D2 and audion V2, its feature exists Connect resistance R4 and electric capacity C1 in the port 1 of, described rectifier bridge T, the other end of electric capacity C1 connect resistance R4 the other end and 220V alternating current, the port 3 of rectifier bridge T connects the other end of 220V alternating current, and the port 2 of rectifier bridge T connects inductance L1 and electricity Hold C2, the other end of electric capacity C2 connects the other end of inductance L2 and the port 4 of rectifier bridge T, and the other end of inductance L1 connects electric capacity C3, resistance R1, resistance R2, resistance R3, the contact K-1 of the negative electrode of diode D3, relay K and relay K, resistance R1's is another End connects a fixing end of potentiometer RP1, and the other end of inductance L2 connects the other end of electric capacity C3, the slip of potentiometer RP1 End, another fixing end of potentiometer RP2, the emitter stage of audion V1, the emitter stage of audion V2 and load A, potentiometer RP1 Sliding end connect diode D2 negative electrode, the base stage of the anode connecting triode V1 of diode D2, the colelctor electrode of audion V1 Connect the anode of diode D1 and the other end of resistance R2, the negative electrode of diode D1 connects anode and the audion V2 of diode D4 Base stage, the other end of resistance R3 connects another fixing end of potentiometer RP2, and the sliding end of potentiometer RP2 connects diode The colelctor electrode of the negative electrode audion V2 of D4 connects the anode of diode D3 and the other end of relay K, the contact K-1 of relay K The other end connect load A the other end.

2. a kind of multifunctional DC power supply controller according to claim 1 is it is characterised in that described diode D2 and two Pole pipe D4 is Zener diode.

3. a kind of multifunctional DC power supply controller according to claim 1 is it is characterised in that described relay K is normal Closed contact relay.