CN207232804U - A kind of power module of wide-range input voltage - Google Patents

Abstract

The utility model discloses a kind of power module of wide-range input voltage; including automatic Regulation module, voltage detection module, voltage stabilizing output module and power-failure protecting module, automatic Regulation module connects voltage detection module, voltage stabilizing output module and power-failure protecting module respectively.The power module structure of the utility model wide-range input voltage is simple, component is few; it is provided with regulator circuit, constant-current circuit and overvoltage crowbar at the same time; effectively ensure the stabilization and service life of load; and power failure alarm module is also added into this circuit, therefore is had the advantages that vdiverse in function, easy to use and highly practical.

Description

A kind of power module of wide-range input voltage

Technical field

A kind of power module is the utility model is related to, is specifically a kind of power module of wide-range input voltage.

Background technology

With the continuous improvement of people's living standards, electronic equipment has become an essential part in life, especially It is that various household electrical appliance bring great convenience to life, the work of people, and this kind of electronic device has required an essence The power supply that degree is higher, performance is stablized.The power type of existing market is various, its mid and low-end products is especially more, although low-end product With respect to the advantage that high-end product has price, but quality often complies with one's wishes not to the utmost, common regulated power supply there are function it is single, The problem of protecting effect is undesirable, such as：Application number：201620124438.5 disclosed adjustable voltage-stabilized source, it can only The power supply of disconnecting consumers when running into over-pressed or under-voltage, although can achieve the purpose that protection load, has again resulted in negative Power-off is carried, can not work, can not thus be applicable to the electrical equipment of continuous work, therefore its is to be improved.

Utility model content

A kind of power supply mould for the wide-range input voltage stablized the purpose of this utility model is to provide simple in structure, performance Block, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides following technical solution：

A kind of power module of wide-range input voltage, including automatic Regulation module, voltage detection module, voltage stabilizing output mould Block and power-failure protecting module, automatic Regulation module connect voltage detection module, voltage stabilizing output module and power-failure protecting module respectively.

Preferred solution as the utility model：The automatic Regulation module includes transformer W, rectifier bridge T and relay J, the voltage detection module include diode D2, relay J and capacitance C1, and voltage stabilizing output module includes triode V1, three poles Pipe V2, potentiometer RP1 and potentiometer RP2, power-failure protecting module include triode V5, loudspeaker B and capacitance C3, transformer W around The both ends of group N1 connect the both ends of 220V alternating currents respectively, and the port 3 of one end connection rectifier bridge T of the winding N2 of transformer W, becomes The non-moving end 2 of contact J-1 of the other end connection relay J of the winding N2 of depressor W and the winding N3 of transformer W, transformer W's The non-moving end 1 of the contact J-1 of the other end connection relay J of winding N3, the moved end 3 of the contact J-1 of relay J connects rectifier bridge The port 1 of T, the port 2 of rectifier bridge T connect resistance R1, resistance R2, the collector of triode V2, the collector of triode V4, two The cathode of the anode of pole pipe D3, resistance R5 and diode D2, anode connection the capacitance C1 and relay J, capacitance C1 of diode D2 Other end connection capacitance C2, the anode of diode D1, a fixing end, the emitter of triode V1, the relay of potentiometer RP2 The cathode of the other end of device J and the other end connection diode D1 of load H, resistance R1, the other end connecting triode of resistance R2 The base stage of V2 and the collector of triode V1, emitter, the base of triode V4 of the emitter connecting triode V3 of triode V2 Pole and a fixing end of potentiometer RP1, the sliding end of the base stage connection potentiometer RP1 of triode V3, the current collection of triode V3 Pole connects the base stage of resistance R3 and triode V1, and the other end of resistance R3 connects the sliding end of potentiometer RP3, potentiometer RP1's Another fixing end connects the other end of resistance R4, another fixing end of potentiometer RP2, the other end of capacitance C2 and load H, The other end of the emitter connection resistance R4 of triode V4, the transmitting of the cathode connection capacitance C3 and triode V5 of diode D3 Pole, the base stage of the other end connecting triode V5 of resistance R5, the collector connection resistance R6 of triode V5, the other end of resistance R6 Connect loudspeaker B.

Preferred solution as the utility model：The capacitance C3 is super capacitor.

Compared with prior art, the beneficial effects of the utility model are：The power supply of the utility model wide-range input voltage Modular structure is simple, component is few, while is provided with regulator circuit, constant-current circuit and overvoltage crowbar, effectively ensures to load Stabilization and service life, and power failure alarm module is also added into this circuit, thus with vdiverse in function, easy to use and The advantages of highly practical.

Brief description of the drawings

Fig. 1 is the circuit diagram of the power module of wide-range input voltage；

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.

Referring to Fig. 1, in the utility model embodiment, a kind of power module of wide-range input voltage, including automatic tune Die block, voltage detection module, voltage stabilizing output module and power-failure protecting module, automatic Regulation module connect voltage detecting mould respectively Block, voltage stabilizing output module and power-failure protecting module.

Preferred solution as the utility model：The automatic Regulation module includes transformer W, rectifier bridge T and relay J, the voltage detection module include diode D2, relay J and capacitance C1, and voltage stabilizing output module includes triode V1, three poles Pipe V2, potentiometer RP1 and potentiometer RP2, power-failure protecting module include triode V5, loudspeaker B and capacitance C3, transformer W around The both ends of group N1 connect the both ends of 220V alternating currents respectively, and the port 3 of one end connection rectifier bridge T of the winding N2 of transformer W, becomes The non-moving end 2 of contact J-1 of the other end connection relay J of the winding N2 of depressor W and the winding N3 of transformer W, transformer W's The non-moving end 1 of the contact J-1 of the other end connection relay J of winding N3, the moved end 3 of the contact J-1 of relay J connects rectifier bridge The port 1 of T, the port 2 of rectifier bridge T connect resistance R1, resistance R2, the collector of triode V2, the collector of triode V4, two The cathode of the anode of pole pipe D3, resistance R5 and diode D2, anode connection the capacitance C1 and relay J, capacitance C1 of diode D2 Other end connection capacitance C2, the anode of diode D1, a fixing end, the emitter of triode V1, the relay of potentiometer RP2 The cathode of the other end of device J and the other end connection diode D1 of load H, resistance R1, the other end connecting triode of resistance R2 The base stage of V2 and the collector of triode V1, emitter, the base of triode V4 of the emitter connecting triode V3 of triode V2 Pole and a fixing end of potentiometer RP1, the sliding end of the base stage connection potentiometer RP1 of triode V3, the current collection of triode V3 Pole connects the base stage of resistance R3 and triode V1, and the other end of resistance R3 connects the sliding end of potentiometer RP3, potentiometer RP1's Another fixing end connects the other end of resistance R4, another fixing end of potentiometer RP2, the other end of capacitance C2 and load H, The other end of the emitter connection resistance R4 of triode V4, the transmitting of the cathode connection capacitance C3 and triode V5 of diode D3 Pole, the base stage of the other end connecting triode V5 of resistance R5, the collector connection resistance R6 of triode V5, the other end of resistance R6 Connect loudspeaker B.

Capacitance C3 is super capacitor.

The operation principle of the utility model is：In use, powering on, when voltage is normal, relay J does not work, it is touched Point connects 1,3,220V line voltages and is depressured by winding N1, N2, N3 of transformer W, powered after rectifier bridge T rectifications to circuit, Under normal circumstances, diode D2 is not breakdown, and relay J is not turned on, its contact J-1 is failure to actuate, while power supply passes through triode V4, resistance R4 give load H power supplies, load emitter of the input current essentially from V4 of H, in this way, when input current increase, electricity Voltage in road between the b-e of triode V4 also and then increases, and at this moment, the voltage of the e poles of triode V3 and the b interpolars of V3 also increases Greatly, and e, b voltage across poles of V3 can not possibly exceed 0.7V, when V3 e, b voltage across poles increase when, the e poles of V3 can shunt away stream Toward the electric current of the b poles of V4, in this way, the increase of voltage between the b-e of triode V4 is limited, so as to fulfill maximum input current The purpose of limitation.

Potentiometer RP2 is used as the brightness regulation of regulated output voltage, i.e. load tool H.As output voltage increase, e, b of V1 Voltage across poles also increases, this causes V1 to shunt the electric current for the b poles for walking to flow to V2, after V2 conducting electric currents decline, is not difficult to find out V4's Conducting electric current also declines, so that output voltage declines.When output voltage reduces, mutually returned with above-mentioned steps, so as to reach steady The purpose of constant voltage, increases loaded stability.When occurring electric voltage over press in use, diode D2 is breakdown, relay Device J is turned on, its contact J-1 actions, connect 2,3 contacts, and line voltage is only depressured by winding N1 and N2, so as to reduce output electricity Pressure, prevents overvoltage from burning circuit, and after overpressure situation disappears, circuit turns again to original state, and capacitance C1 is used to prevent relay Frequent shakes of the device J near under-voltage critical value.

Power-failure protecting module is that the on state characteristic of energy storage and p-type triode based on super capacitor is realized, when there is electricity, The base stage of triode V5 is subject to higher trigger voltage and by loudspeaker B is not turned at this time, and capacitance C3 charges, and works as power-off When, the base voltage of triode V5 reduces, and V5 is turned at this time, and super capacitor C3 supplies loudspeaker B by triode V5, resistance R6 Electricity, loudspeaker B send power failure alarm.

Claims (3)

1. a kind of power module of wide-range input voltage, including automatic Regulation module, voltage detection module, voltage stabilizing output module With power-failure protecting module, it is characterised in that automatic Regulation module connects voltage detection module, voltage stabilizing output module and power failure respectively Protection module.

2. the power module of wide-range input voltage according to claim 1, it is characterised in that the automatic Regulation module Including transformer W, rectifier bridge T and relay J, the voltage detection module includes diode D2, relay J and capacitance C1, surely Pressure output module includes triode V1, triode V2, potentiometer RP1 and potentiometer RP2, and power-failure protecting module includes triode V5, loudspeaker B and capacitance C3, the both ends of the winding N1 of transformer W connect the both ends of 220V alternating currents, the winding of transformer W respectively The port 3 of one end connection rectifier bridge T of N2, the contact J-1's of the other end connection relay J of the winding N2 of transformer W is motionless The winding N3 of 2 and transformer W is held, the other end of the winding N3 of transformer W connects the non-moving end 1 of the contact J-1 of relay J, after The moved end 3 of the contact J-1 of electric appliance J connects the port 1 of rectifier bridge T, and the port 2 of rectifier bridge T connects resistance R1, resistance R2, three poles The collector of pipe V2, the collector of triode V4, the anode of diode D3, the cathode of resistance R5 and diode D2, diode D2 The other end connection capacitance C2 of anode connection capacitance C1 and relay J, capacitance C1, the anode of diode D1, potentiometer RP2 One fixing end, the emitter of triode V1, the other end connection diode D1 of the other end of relay J and load H, resistance R1 Cathode, the base stage of other end connecting triode V2 and the collector of triode V1 of resistance R2, the emitter of triode V2 connects Connect a fixing end of the emitter of triode V3, the base stage of triode V4 and potentiometer RP1, the base stage connection electricity of triode V3 The sliding end of position device RP1, the base stage of the collector connection resistance R3 and triode V1 of triode V3, the other end connection of resistance R3 The sliding end of potentiometer RP3, another fixing end connection resistance R4 of potentiometer RP1, another fixing end of potentiometer RP2, The other end of capacitance C2 and the other end of load H, the other end of the emitter connection resistance R4 of triode V4, the moon of diode D3 Pole connects the emitter of capacitance C3 and triode V5, the base stage of the other end connecting triode V5 of resistance R5, the collection of triode V5 Electrode connects resistance R6, the other end connection loudspeaker B of resistance R6.

3. the power module of wide-range input voltage according to claim 2, it is characterised in that the capacitance C3 is super Capacitance.