CN2539265Y - Induction ballast - Google Patents

Abstract

The utility model relates to an induction ballast which comprises a sole plate, a wiring terminal, a coil and an iron core, wherein the coil comprises a main winding and a secondary winding. One end of the main winding and one end of the secondary winding are connected in series, and a tap which is arranged at the connecting portion in series and the other end of the main winding are connected to an electric source. In a T5 type fluorescent lamp circuit, the utility model has the specific work processes that the main winding is provided with alternating current when the electric source is switched on, the elevatory voltage is output from both ends of windings after connecting in series through self couple variable voltage to provide for a closed circuit composed of a glow starter and a lamp tube, and the glow starter and the lamp tube obtain higher starting voltage to guarantee the normal starting of the T5 typed fluorescent lamp circuit.

Description

A kind of Inductive ballast

Technical field:

The utility model relates to electricity field, and particularly a kind of fixed inductor relates in particular to a kind of Inductive ballast that is used for fluorescent lamp.

Background technology:

Inductive ballast of the prior art is an iron inductance coil of being made up of coil, silicon steel sheet, binding post and base plate etc., when the electric current in the coil changes, in coil, cause the variation of magnetic flux, thereby generation induced electromotive force, its direction is opposite with sense of current, thereby hampers the electric current variation; In the operating circuit of fluorescent lamp, be provided with a starter, starter is formed in parallel by a neon discharge tube and an electric capacity, the effect of electric capacity is to eliminate to the electromagnetic interference of power supply and with ballast to form oscillation circuit, increase the starting impulse voltage amplitude, form with bimetal leaf by an electrode in the neon discharge tube, utilize neon bulb discharge heating, make bimetal leaf generation on-off action.After the fluorescent lamp place in circuit, bimetal leaf electrode and stationary contact interpolar in the neon discharge tube begin glow discharge, make the bimetal leaf expanded by heating and contact with the stationary contact utmost point, so power supply, ballast, filament in the fluorescent tube and starter constitute a closed-loop path, electric current makes filament pre-heating, and the bimetal leaf electrode in the neon discharge tube is with after the stationary contact utmost point contacts, glow discharge disappears, bimetal leaf begins to cool down, two electrodes disconnect, in the moment that two electrodes disconnect, the electric current in the circuit suddenly disappears, so ballast produces a high-voltage pulse, after it and power supply superpose, be added to lamp tube ends, make the ionized inert gas in the fluorescent tube and cause arc discharge, fluorescent tube is started working.In the prior art, adopted the fluorescent lighting of T5 type, be coated with rare-earth trichromatic fluorescent powder in the fluorescent tube of T5 type fluorescent lamp, improved the luminous flux of unit are, given full play to the effect of tubule footpath Gao Guangtong, has light efficiency height, photochromic good and do not have an advantage of stroboscopic, voltage in the pipe of having relatively high expectations during the fluorescent tube take-off of T5 type fluorescent lamp.At present, the ballast that is applied to T5 type fluorescent lamp is common Inductive ballast.

Summary of the invention:

Technical problem to be solved in the utility model is: because voltage in the pipe of having relatively high expectations during the fluorescent tube take-off of T5 type fluorescent lamp of the prior art, and the ballast that is applied to T5 type fluorescent lamp at present is common Inductive ballast, the voltage of common Inductive ballast when the starter take-off is relatively low, therefore the normal take-off of starter can't be made, the fluorescent tube of T5 type fluorescent lamp can not be lighted.The utility model is that the technical scheme that solution above-mentioned technical problem of the prior art is adopted provides a kind of Inductive ballast, described this Inductive ballast comprises base plate, binding post, coil and iron core, wherein, described coil is arranged on the described iron core, described coil and iron core are fixed on the described base plate, described binding post is arranged on the base plate, described coil comprises a main winding and one winding, described main winding and time winding all install on described iron core, polyphone connects between one end of described main winding and the end of inferior winding, polyphone coupling part at described main winding and time winding is provided with a tap, the other end of described tap and main winding is connected to power supply, between described coil and iron core, skeleton can be set, described coil winding is on described skeleton, described iron core can adopt the silicon steel sheet group in the prior art, and described silicon steel sheet group is that the silicon steel sheet by two above quantity is laminated.The concrete course of work of the utility model in T5 type fluorescent lamp circuit is: behind power connection, there is alternating current to pass through in the main winding, by the self coupling transformation, the voltage that connects the two ends output rising of later winding at polyphone, be provided in the closed circuit of forming by starter and fluorescent tube, starter and fluorescent tube obtain higher starting voltage, can guarantee to normally start.The utility model is because the centre of the inductance coil in Inductive ballast is provided with tap, power supply is from the end input of tap terminals and inductance coil, so can pass through the self coupling transformation, obtain higher voltage at the two ends of whole inductance coil, guarantee that T5 type fluorescent lamp circuit normally starts.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an electrical schematic diagram of the present utility model.

Fig. 3 is the use principle figure of an embodiment of the present utility model.

Embodiment:

As shown in Figure 1, a kind of Inductive ballast 1 of the utility model, comprise base plate 2, binding post 3, coil 4 and iron core 5, wherein, described coil 4 is arranged on the described iron core 5, described coil 4 and iron core 5 are fixed on the described base plate 2, described binding post 3 is arranged on the base plate 2, described coil 4 comprises a main winding 41 and one winding 42, described main winding 41 and time winding 42 all install on described iron core 2, as shown in Figure 2, polyphone connects between one end of described main winding 41 and the end of inferior winding 42, polyphone coupling part at described main winding 41 and time winding 42 is provided with a tap, the other end of described tap and main winding 41 is connected to power supply, between described coil 4 and iron core 5 skeleton 6 can be set, and described coil 4 is wound on the described skeleton 6, described iron core 5 can adopt the silicon steel sheet group in the prior art, and described silicon steel sheet group is that the silicon steel sheet by two above quantity is laminated.As shown in Figure 3, in a preferred embodiment of the present utility model, behind power connection, there is alternating current to pass through in the main winding 41, by the self coupling transformation, the voltage that raises is exported at the two ends that connect later winding at polyphone, and in this embodiment of the present utility model, the voltage of input is 220V, the voltage of output is 350V, be provided in the closed circuit of being made up of starter 7 and fluorescent tube 8, starter and fluorescent tube obtain higher starting voltage, can guarantee to normally start.

Claims (3)

1, a kind of Inductive ballast, comprise base plate, binding post, coil and iron core, it is characterized in that: described coil is arranged on the described iron core, described coil and iron core are fixed on the described base plate, and described coil comprises a main winding and one winding, and described main winding and time winding all install on described iron core, polyphone connects between one end of described main winding and the end of inferior winding, is provided with a tap in the polyphone coupling part of described main winding and time winding.

2, a kind of Inductive ballast as claimed in claim 1 is characterized in that: be provided with skeleton between described coil and iron core, described coil winding is on described skeleton.

3, a kind of Inductive ballast as claimed in claim 1 is characterized in that: described iron core adopts the silicon steel sheet group in the prior art, and described silicon steel sheet group is that the silicon steel sheet by two above quantity is laminated.

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