CN204597797U

CN204597797U - A kind of adjustable voltage stabilizer

Info

Publication number: CN204597797U
Application number: CN201520338162.6U
Authority: CN
Inventors: 杨维超
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-05-22
Filing date: 2015-05-22
Publication date: 2015-08-26
Anticipated expiration: 2025-05-22

Abstract

The utility model discloses a kind of adjustable voltage stabilizer, comprise transformer T, diode D1, diode D2, potentiometer RP1, triode VT1, electric capacity C1 and resistance R1, transformer T coil L1 two ends connect 220V alternating current respectively, transformer T coil L2 one end connects diode D1 positive pole, diode D1 negative pole connects diode D2 respectively, electric capacity C1, resistance R1 and triode VT1 collector electrode, diode D2 positive pole connection transformer T coil L3, the transformer T coil L2 other end is the connection transformer T coil L3 other end respectively, the electric capacity C1 other end, resistance R3, triode VT3 emitter, triode VT2 collector electrode, electric capacity C2 and electric capacity C3 ground connection.The utility model adjustable voltage stabilizer adjustable extent regulates arbitrarily between 3.5V ~ 25V, and output current is large, and the adjustable voltage stabilizing tubular circuit adopting triode VT1, VT2 and VT3 to form, thus obtain being satisfied with stable output voltage, circuit structure is simple, and stability is high, is applicable to very much promoting the use of.

Description

A kind of adjustable voltage stabilizer

Technical field

The utility model relates to a kind of pressurizer, specifically a kind of adjustable voltage stabilizer.

Background technology

Along with the development of science and technology and the rise of mobile terminal, many electronic installations all require the higher voltage stabilizing adjustable DC power supply of a precision.The constant voltage dc source of existing market is of a great variety, its mid and low-end products are especially many, although the relative high-end product of low-end product has the advantage of price, quality is often as one wishes not to the utmost, although and high-end product reliable in quality, safety and stability, price is high also allows people hang back.

Utility model content

The purpose of this utility model is to provide the adjustable voltage stabilizer that a kind of cost is low, precision is high, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of adjustable voltage stabilizer, comprises transformer T, diode D1, diode D2, potentiometer RP1, triode VT1, electric capacity C1 and resistance R1, described transformer T coil L1 two ends connect 220V alternating current respectively, and transformer T coil L2 one end connects diode D1 positive pole, and diode D1 negative pole connects diode D2 respectively, electric capacity C1, resistance R1 and triode VT1 collector electrode, diode D2 positive pole connection transformer T coil L3, the transformer T coil L2 other end is the connection transformer T coil L3 other end respectively, the electric capacity C1 other end, resistance R3, triode VT3 emitter, triode VT2 collector electrode, electric capacity C2 and electric capacity C3 ground connection, the electric capacity C2 other end is connecting triode VT1 emitter respectively, the electric capacity C3 other end and diode D2 positive pole, diode D2 negative pole connects output end vo, and described triode VT1 base stage is the contact resistance R1 other end respectively, potentiometer RP1, potentiometer RP1 slide plate, resistance R4 and triode VT2 emitter, triode VT2 base stage is the contact resistance R4 other end and resistance R5 respectively, resistance R5 other end connecting triode VT3 collector electrode, the triode VT3 base stage respectively contact resistance R3 other end and resistance R2, the resistance R2 other end connects the potentiometer RP1 other end.

As further program of the utility model: described electric capacity C3 is electrochemical capacitor.

As the utility model further scheme: described electric capacity C1 and electric capacity C2 is leaded multilayer ceramic capacitor.

Compared with prior art, the beneficial effects of the utility model are: the utility model adjustable voltage stabilizer adjustable extent regulates arbitrarily between 3.5V ~ 25V, output current is large, and the adjustable voltage stabilizing tubular circuit adopting triode VT1, VT2 and VT3 to form, thus obtain being satisfied with stable output voltage, circuit structure is simple, and stability is high, is applicable to very much promoting the use of.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of adjustable voltage stabilizer.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, in the utility model embodiment, a kind of adjustable voltage stabilizer, comprises transformer T, diode D1, diode D2, potentiometer RP1, triode VT1, electric capacity C1 and resistance R1, transformer T coil L1 two ends connect 220V alternating current respectively, and transformer T coil L2 one end connects diode D1 positive pole, and diode D1 negative pole connects diode D2 respectively, electric capacity C1, resistance R1 and triode VT1 collector electrode, diode D2 positive pole connection transformer T coil L3, the transformer T coil L2 other end is the connection transformer T coil L3 other end respectively, the electric capacity C1 other end, resistance R3, triode VT3 emitter, triode VT2 collector electrode, electric capacity C2 and electric capacity C3 ground connection, the electric capacity C2 other end is connecting triode VT1 emitter respectively, the electric capacity C3 other end and diode D2 positive pole, diode D2 negative pole connects output end vo, and triode VT1 base stage is the contact resistance R1 other end respectively, potentiometer RP1, potentiometer RP1 slide plate, resistance R4 and triode VT2 emitter, triode VT2 base stage is the contact resistance R4 other end and resistance R5 respectively, resistance R5 other end connecting triode VT3 collector electrode, the triode VT3 base stage respectively contact resistance R3 other end and resistance R2, the resistance R2 other end connects the potentiometer RP1 other end.

Electric capacity C3 is electrochemical capacitor.

Electric capacity C1 and electric capacity C2 is leaded multilayer ceramic capacitor.

Operation principle of the present utility model is: refer to Fig. 1,220V alternating current direct voltage after rectifying and wave-filtering is supplied to the base stage of Correctional tube VT1 by resistance R1, make Correctional tube VT1 conducting, when VT1 conducting, voltage makes triode VT2 conducting through potentiometer RP1, resistance R2, then triode VT3 also conducting, at this moment the emitter and collector voltage of triode VT1, VT2, VT3 no longer changes, regulator potentiometer RP1, can obtain stable output voltage, the value of resistance R1, potentiometer RP1, resistance R2 and resistance R3 determines the magnitude of voltage that this circuit exports.

To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.

In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.

Claims

1. an adjustable voltage stabilizer, comprises transformer T, diode D1, diode D2, potentiometer RP1, triode VT1, electric capacity C1 and resistance R1, is characterized in that, described transformer T coil L1 two ends connect 220V alternating current respectively, and transformer T coil L2 one end connects diode D1 positive pole, and diode D1 negative pole connects diode D2 respectively, electric capacity C1, resistance R1 and triode VT1 collector electrode, diode D2 positive pole connection transformer T coil L3, the transformer T coil L2 other end is the connection transformer T coil L3 other end respectively, the electric capacity C1 other end, resistance R3, triode VT3 emitter, triode VT2 collector electrode, electric capacity C2 and electric capacity C3 ground connection, the electric capacity C2 other end is connecting triode VT1 emitter respectively, the electric capacity C3 other end and diode D2 positive pole, diode D2 negative pole connects output end vo, and described triode VT1 base stage is the contact resistance R1 other end respectively, potentiometer RP1, potentiometer RP1 slide plate, resistance R4 and triode VT2 emitter, triode VT2 base stage is the contact resistance R4 other end and resistance R5 respectively, resistance R5 other end connecting triode VT3 collector electrode, the triode VT3 base stage respectively contact resistance R3 other end and resistance R2, the resistance R2 other end connects the potentiometer RP1 other end.

2. adjustable voltage stabilizer according to claim 1, is characterized in that, described electric capacity C3 is electrochemical capacitor.

3. adjustable voltage stabilizer according to claim 1, is characterized in that, described electric capacity C1 and electric capacity C2 is leaded multilayer ceramic capacitor.