CN205489446U - Intelligence supply control circuit - Google Patents

Abstract

The utility model discloses an intelligence supply control circuit, including transformer T, potentiometre RP1, controllable accurate steady voltage source VS, relay J, resistance R1, electric capacity C1 and triode VT1, 220V alternating current one end and transformer T coil L1 are connected respectively to electric capacity C1 one end, is relay J contact J connected to the transformer T coil L1 other end 1, the relay J that contacts 1 other end connected load RL, the load RL other end connect the 220V alternating current other end, diode D1 positive pole, electric capacity C2, electric capacity C3 and triode VT2 projecting pole respectively, and the electric capacity C1 other end is connected respectively to diode D1 negative pole and diode D2 is anodal. The utility model discloses a VS and transformer T do not use any chip element as detection circuitry, and circuit structure is simple, and is with low costs, small, and the interference killing feature is strong.

Description

A kind of intelligent power supply control circuit

Technical field

This utility model relates to a kind of control circuit, specifically a kind of intelligent power supply control circuit.

Background technology

Along with popularizing of present electrical equipment, bringing revolutionary change to industrial and agricultural production, Defence business, science and technology, accelerate the development of society, people have stepped into Electrification Age, also the quality of life making people is greatly improved, and the most increasingly be unable to do without these electric equipments.Development along with science and technology, the precision of electric equipment also gradually steps up, there occurs earth-shaking change, but how to protect the most interfered by outside of these electric equipments, become the subject matter that current development in science and technology is paid close attention to, the electrical network of China is popularized at present, it is many convenient that huge network system gives us, but the user being as accessing electrical network increases, variation with consumer electronics, also result in the instability of line voltage, voltage fluctuated, also become to damage the principal element of electric equipment, how to protect electrical equipment when change in voltage is bigger, become the direction that people study now, existing a lot of overvoltage crowbars use NE555 as control chip, structure is complicated, cost is high, capacity of resisting disturbance is weak.

Utility model content

The purpose of this utility model is to provide a kind of intelligent power supply control circuit, with the problem solving to propose in above-mentioned background technology.

nullFor achieving the above object，This utility model following technical scheme of offer: a kind of intelligent power supply control circuit，Including transformator T、Potentiometer RP1、Controllable accurate source of stable pressure VS、Relay J、Resistance R1、Electric capacity C1 and audion VT1，Described electric capacity C1 one end connects 220V alternating current one end and transformator T coil L1 respectively，The transformator T coil L1 other end connects relay J contact J-1，The relay J contact J-1 other end connects load RL，The load RL other end connects the 220V alternating current other end respectively、Diode D1 positive pole、Electric capacity C2、Electric capacity C3 and audion VT2 emitter stage，Diode D1 negative pole connects the electric capacity C1 other end and diode D2 positive pole respectively，Diode D2 negative pole connects the electric capacity C2 other end respectively、Resistance R1、Audion VT1 emitter stage、Diode D3 negative pole、Relay J coil and resistance R4，Resistance R4 other end connecting luminous diode LED positive pole，LED negative pole connects diode D3 positive pole respectively、The relay J coil other end and audion VT2 colelctor electrode，Audion VT2 base stage connects resistance R3，The resistance R3 other end connecting triode VT1 colelctor electrode and the electric capacity C3 other end respectively，Audion VT1 base stage connects resistance R2，The resistance R2 other end connects the resistance R1 other end and the K pole of controllable accurate source of stable pressure VS respectively，The A pole of controllable accurate source of stable pressure VS connects potentiometer RP1 one end respectively、Electric capacity C4 and transformator T coil L2，The transformator T coil L2 other end connects diode D4 positive pole，Diode D4 negative pole connects the electric capacity C4 other end and the potentiometer RP1 other end respectively，Potentiometer RP1 slide plate connects the reference pole of controllable accurate source of stable pressure VS.

As further program of the utility model: described controllable accurate source of stable pressure VS uses TL431.

As this utility model further scheme: described relay J contact J-1 is normally-closed contact.

Compared with prior art, the beneficial effects of the utility model are: this utility model uses VS and transformator T as testing circuit, does not use any chip component, and circuit structure is simple, and low cost, volume is little, and capacity of resisting disturbance is strong.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of intelligent power supply control circuit.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment; technical scheme in this utility model embodiment is clearly and completely described; obviously; described embodiment is only a part of embodiment of this utility model; rather than whole embodiments; based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

nullRefer to Fig. 1，In this utility model embodiment，A kind of intelligent power supply control circuit，Including transformator T、Potentiometer RP1、Controllable accurate source of stable pressure VS、Relay J、Resistance R1、Electric capacity C1 and audion VT1，Described electric capacity C1 one end connects 220V alternating current one end and transformator T coil L1 respectively，The transformator T coil L1 other end connects relay J contact J-1，The relay J contact J-1 other end connects load RL，The load RL other end connects the 220V alternating current other end respectively、Diode D1 positive pole、Electric capacity C2、Electric capacity C3 and audion VT2 emitter stage，Diode D1 negative pole connects the electric capacity C1 other end and diode D2 positive pole respectively，Diode D2 negative pole connects the electric capacity C2 other end respectively、Resistance R1、Audion VT1 emitter stage、Diode D3 negative pole、Relay J coil and resistance R4，Resistance R4 other end connecting luminous diode LED positive pole，LED negative pole connects diode D3 positive pole respectively、The relay J coil other end and audion VT2 colelctor electrode，Audion VT2 base stage connects resistance R3，The resistance R3 other end connecting triode VT1 colelctor electrode and the electric capacity C3 other end respectively，Audion VT1 base stage connects resistance R2，The resistance R2 other end connects the resistance R1 other end and the K pole of controllable accurate source of stable pressure VS respectively，The A pole of controllable accurate source of stable pressure VS connects potentiometer RP1 one end respectively、Electric capacity C4 and transformator T coil L2，The transformator T coil L2 other end connects diode D4 positive pole，Diode D4 negative pole connects the electric capacity C4 other end and the potentiometer RP1 other end respectively，Potentiometer RP1 slide plate connects the reference pole of controllable accurate source of stable pressure VS；Described controllable accurate source of stable pressure VS uses TL431；Described relay J contact J-1 is normally-closed contact.

Operation principle of the present utility model is: refer to Fig. 1; this utility model mainly uses VS and transformator T as testing circuit; when power consumption is within normal value; transformator T coil L2 both end voltage is low; in potentiometer RP1 end output voltage deficiency so that TL431 turns on after rectified; relay J does not works; when power consumption over loading; on transformator T coil L1, electric current increases, and transformator T coil L2 both end voltage also raises, and makes TL431 turn on; thus VT1 and VT2 is also switched on; relay J adhesive, makes load RL power-off, thus plays the effect of overvoltage protection.

To those skilled in the art, obviously this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, this utility model can be realized in other specific forms, therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim are included in this utility model, should not be considered as limiting involved claim by any reference in claim.

In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.

Claims (3)

1. null1. an intelligent power supply control circuit，Including transformator T、Potentiometer RP1、Controllable accurate source of stable pressure VS、Relay J、Resistance R1、Electric capacity C1 and audion VT1，It is characterized in that，Described electric capacity C1 one end connects 220V alternating current one end and transformator T coil L1 respectively，The transformator T coil L1 other end connects relay J contact J-1，The relay J contact J-1 other end connects load RL，The load RL other end connects the 220V alternating current other end respectively、Diode D1 positive pole、Electric capacity C2、Electric capacity C3 and audion VT2 emitter stage，Diode D1 negative pole connects the electric capacity C1 other end and diode D2 positive pole respectively，Diode D2 negative pole connects the electric capacity C2 other end respectively、Resistance R1、Audion VT1 emitter stage、Diode D3 negative pole、Relay J coil and resistance R4，Resistance R4 other end connecting luminous diode LED positive pole，LED negative pole connects diode D3 positive pole respectively、The relay J coil other end and audion VT2 colelctor electrode，Audion VT2 base stage connects resistance R3，The resistance R3 other end connecting triode VT1 colelctor electrode and the electric capacity C3 other end respectively，Audion VT1 base stage connects resistance R2，The resistance R2 other end connects the resistance R1 other end and the K pole of controllable accurate source of stable pressure VS respectively，The A pole of controllable accurate source of stable pressure VS connects potentiometer RP1 one end respectively、Electric capacity C4 and transformator T coil L2，The transformator T coil L2 other end connects diode D4 positive pole，Diode D4 negative pole connects the electric capacity C4 other end and the potentiometer RP1 other end respectively，Potentiometer RP1 slide plate connects the reference pole of controllable accurate source of stable pressure VS.
2. Intelligent power supply control circuit the most according to claim 1, it is characterised in that described controllable accurate source of stable pressure VS uses TL431.
3. Intelligent power supply control circuit the most according to claim 1, it is characterised in that described relay J contact J-1 is normally-closed contact.