CN204761322U - High voltage dc source circuit - Google Patents

Abstract

The utility model discloses a high voltage dc source circuit, including transformer W1, transformer W2, diode D1 and chip IC1, transformer W1's winding N1's one end is connected transient voltage and is restrained diode D5 and 220V alternating current, and transient voltage restraines diode D5's other end ground connection, and the other end of 220V alternating current is connected to transformer W1's winding N1's the other end, and transformer W1's winding N3 and diode D2's positive pole are connected to transformer W1's winding N2's one end. The utility model discloses high voltage dc source circuit simple structure, components and parts are few, the break -make of the high frequency oscillating signal control triode through time -base circuit output to reach control output voltage's purpose, restrain the diode and set up transient voltage in the circuit, can be worth to safely with transformer leakage inductance voltage clamp, and the spike voltage who produces in the decay electric wire netting, consequently have the cost of manufacture and hang down, export advantage stable, convenient to use.

Description

A kind of high voltage direct current source circuit

Technical field

The utility model relates to a kind of power circuit, specifically a kind of high voltage direct current source circuit.

Background technology

DC power supply is due to stable output, simple and the efficiency advantages of higher of structure, be widely used in various electronic device, but the electric energy transmitted in electrical network is at present alternating current mostly, therefore need direct-current power supply converting circuit to realize AC-DC conversion function, but power converter output voltage is in the market told somebody what one's real intentions are, and some special electricity consumption places need higher direct voltage, and the most complex structure of the DC power supply being designed into repeatedly transformation, volume is large, cost of manufacture is high, and the winding of transformer can produce larger leakage inductance voltage when being coupled, affect the stability of output voltage.

Utility model content

The purpose of this utility model is to provide that a kind of structure is simple, the high voltage direct current source circuit of stable performance, 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 high voltage direct current source circuit, comprise transformer W1, transformer W2, diode D1 and chip IC 1, one end of the winding N1 of described transformer W1 connects transient voltage suppressor diode D5 and 220V alternating current, the other end ground connection of transient voltage suppressor diode D5, the other end of the winding N1 of transformer W1 connects the other end of 220V alternating current, the winding N3 of one end connection transformer W1 of the winding N2 of transformer W1 and the anode of diode D2, the other end of the winding N2 of transformer W1 connects electric capacity C1, electric capacity C4, the anode of diode D4, the emitter of triode V1 and the pin 1 of chip IC 1, the other end of the winding N3 of transformer W1 connects the anode of diode D1, the negative electrode of diode D1 connects electric capacity C3, the winding N4 of transient voltage suppressor diode D6 and transformer W2, the other end ground connection of transient voltage suppressor diode D6, the negative electrode contact resistance R1 of diode D2, electric capacity C2, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the other end of resistance R1 connects a stiff end of potentiometer RP1, the sliding end of potentiometer RP1 and the pin 7 of chip IC 1, another stiff end of potentiometer RP1 connects the other end of electric capacity C1, the pin 2 of chip IC 1 and the pin 6 of chip IC 1, the pin 3 of chip IC 1 connects electric capacity C4, the other end of electric capacity C4 connects the anode of diode D3 and the negative electrode of diode D4, the base stage of the negative electrode connecting triode V1 of diode D3, the other end of electric capacity C2 connects the other end of electric capacity C3 and ground connection, the collector electrode of triode V1 connects the other end of the other end of electric capacity C4 and the winding N4 of transformer W2, the winding N5 output voltage U1 of transformer W2.

As preferred version of the present utility model: the model of described chip IC 1 is NE555.

Compared with prior art, the beneficial effects of the utility model are: the utility model high voltage direct current source circuit structure is simple, components and parts are few, the high-frequency oscillation signal exported by time-base circuit controls the break-make of triode, thus reach the object controlling output voltage, and be provided with transient voltage suppressor diode in circuit, can by transformer leakage inductance voltage clamping to safety value, and the peak voltage produced in electrical network of decaying, therefore have that cost of manufacture is low, stable output, advantage easy to use.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of high voltage direct current source circuit.

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, a kind of high voltage direct current source circuit, comprise transformer W1, transformer W2, diode D1 and chip IC 1, one end of the winding N1 of described transformer W1 connects transient voltage suppressor diode D5 and 220V alternating current, the other end ground connection of transient voltage suppressor diode D5, the other end of the winding N1 of transformer W1 connects the other end of 220V alternating current, the winding N3 of one end connection transformer W1 of the winding N2 of transformer W1 and the anode of diode D2, the other end of the winding N2 of transformer W1 connects electric capacity C1, electric capacity C4, the anode of diode D4, the emitter of triode V1 and the pin 1 of chip IC 1, the other end of the winding N3 of transformer W1 connects the anode of diode D1, the negative electrode of diode D1 connects electric capacity C3, the winding N4 of transient voltage suppressor diode D6 and transformer W2, the other end ground connection of transient voltage suppressor diode D6, the negative electrode contact resistance R1 of diode D2, electric capacity C2, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the other end of resistance R1 connects a stiff end of potentiometer RP1, the sliding end of potentiometer RP1 and the pin 7 of chip IC 1, another stiff end of potentiometer RP1 connects the other end of electric capacity C1, the pin 2 of chip IC 1 and the pin 6 of chip IC 1, the pin 3 of chip IC 1 connects electric capacity C4, the other end of electric capacity C4 connects the anode of diode D3 and the negative electrode of diode D4, the base stage of the negative electrode connecting triode V1 of diode D3, the other end of electric capacity C2 connects the other end of electric capacity C3 and ground connection, the collector electrode of triode V1 connects the other end of the other end of electric capacity C4 and the winding N4 of transformer W2, the winding N5 output voltage U1 of transformer W2.

The model of chip IC 1 is NE555.

Operation principle of the present utility model is: 220V alternating current is run by after transformer W1 point of two-way, one tunnel is through diode D1, electric capacity C3 and transient voltage suppressor diode DW is added on step-up transformer W2, diode D1 of separately leading up to gives by time-base circuit IC1, the control circuit of the element compositions such as triode V1 is powered, transient voltage suppressor diode D5 and D6 divides the leakage inductance voltage being partly used for suppressing transformer W1 and W2 to produce, D5 also has stronger inhibitory action to the peak voltage in line voltage, the core parts of control circuit are NE555 time-base circuits, it can produce the high-frequency oscillation signal of 15 ~ 20kHz, high frequency can be adjusted by potentiometer RP1.Drive singal is exported by 3 pin of chip IC 1, after the bleeder circuit of C4, D3, D4 composition, makes triode V1 be operated in saturation conduction state.The intensity of drive singal directly can observe out according to the brightness of light-emitting diode D4, conducting and the cut-off of triode V1 is driven by it, make the electric current generation size variation flowing through step-up transformer W2 primary coil N4, and then produce high-frequency high-voltage current U1 at W2 secondary coil N5, work for high voltage direct current power consumption equipment.The conveniently adjusted output voltage of adjustment potentiometer RP1.Be connected on the electric capacity C4 between triode V1 collector electrode and ground, use in case the inverse peak voltage produced by triode V2 punctures V2.

Claims (2)

1. a high voltage direct current source circuit, comprise transformer W1, transformer W2, diode D1 and chip IC 1, it is characterized in that, one end of the winding N1 of described transformer W1 connects transient voltage suppressor diode D5 and 220V alternating current, the other end ground connection of transient voltage suppressor diode D5, the other end of the winding N1 of transformer W1 connects the other end of 220V alternating current, the winding N3 of one end connection transformer W1 of the winding N2 of transformer W1 and the anode of diode D2, the other end of the winding N2 of transformer W1 connects electric capacity C1, electric capacity C4, the anode of diode D4, the emitter of triode V1 and the pin 1 of chip IC 1, the other end of the winding N3 of transformer W1 connects the anode of diode D1, the negative electrode of diode D1 connects electric capacity C3, the winding N4 of transient voltage suppressor diode D6 and transformer W2, the other end ground connection of transient voltage suppressor diode D6, the negative electrode contact resistance R1 of diode D2, electric capacity C2, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the other end of resistance R1 connects a stiff end of potentiometer RP1, the sliding end of potentiometer RP1 and the pin 7 of chip IC 1, another stiff end of potentiometer RP1 connects the other end of electric capacity C1, the pin 2 of chip IC 1 and the pin 6 of chip IC 1, the pin 3 of chip IC 1 connects electric capacity C4, the other end of electric capacity C4 connects the anode of diode D3 and the negative electrode of diode D4, the base stage of the negative electrode connecting triode V1 of diode D3, the other end of electric capacity C2 connects the other end of electric capacity C3 and ground connection, the collector electrode of triode V1 connects the other end of the other end of electric capacity C4 and the winding N4 of transformer W2, the winding N5 output voltage U1 of transformer W2.

2. a kind of high voltage direct current source circuit according to claim 1, is characterized in that, the model of described chip IC 1 is NE555.