CN2155123Y

CN2155123Y - Compensation fluorescent lamp ballast

Info

Publication number: CN2155123Y
Application number: CN 93202669
Authority: CN
Inventors: 梁才
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-10
Filing date: 1993-02-10
Publication date: 1994-02-02
Anticipated expiration: 2003-02-10

Abstract

The utility model relates to a compensation type fluorescent lamp ballast. A primary coil of an auto-transformer is switched in an AC power supply after connected with a capacitor in series. One end of the AC power supply input towards the capacitor and a tap end of the auto-transformer are respectively connected with filaments arranged on both ends of a fluorescent lamp tube. The utility model has the advantages of high power factor, low temperature operation, low voltage operation, etc. Even if the filaments arranged on both ends of the fluorescent lamp tube are broken, the lamp tube can be used again.

Description

Compensation fluorescent lamp ballast

The utility model relates to a kind of fluorescent lamp ballast.

Traditional inductance type fluorescent lamp ballast is used till today owing to have advantages such as safety, life-span length and cost are lower always, but (COS φ) is low for its power factor, often to connect electric capacity and compensate at external circuit, and under low-voltage more difficult starter, the tube filament use of can not regenerating of having no progeny.Though the electric ballast of Tui Chuing has overcome these shortcomings substantially in recent years, its cost is higher, and element is more fragile, thereby not easily accepted by people.

The use of still regenerating that the purpose of this utility model is to provide a kind of safety, the life-span is long, power factor is high, filament is had no progeny, and can be under low temperature, low-voltage the fluorescent lamp ballast of starter.

The utility model is achieved in that by an autotransformer and a capacitor forms compensation fluorescent lamp ballast, after autotransformer primary coil and the capacitors in series, and two ends incoming transport power supply; AC power is access to the filament at fluorescent lamp two ends respectively to the tap terminals of end of capacitor input and autotransformer.

For making ballast to an end of capacitor input one winding be arranged respectively also at tap terminals and AC power in starter under the thermionic emission and work, the voltage of induction heats to filament.

The utility model will be further described below in conjunction with drawings and Examples.

Fig. 1 is the circuit diagram of the compensation fluorescent lamp ballast of cold cloudy type;

Fig. 2 is the circuit diagram of the compensation fluorescent lamp ballast of preheating type.

The compensation fluorescent lamp ballast of cold cloudy type is as shown in Figure 1 formed by autotransformer and capacitors in series, two-end-point A and C incoming transport power supply.The filament that AC power is access to the fluorescent tube two ends respectively to an end A and the autotransformer tap terminals B of capacitor input.

The compensation fluorescent lamp ballast of preheating type as shown in Figure 2 is provided with a winding AA ' in AC power to capacitor input A, is located at a winding BB ' at autotransformer tap terminals B, and two winding AA ' and BB ' are access to the filament at fluorescent tube two ends respectively.

The utlity model has following advantage and effect:

1. because the compensating action of capacitor improves power factor, improved brightness and saved power supply.

2. save starter, in the moment of plugged, induced very high voltage at tap terminals, can be with daylight lamp glow starting, and starting time is short, one opens and is.

3. it is little affected by voltage pulsation, uses voltage range wide, can both work under 150～240V voltage.

4. under low temperature environment, still can use as 0 ℃ of temperature.

5. tube filament is had no progeny and still can be used.

6. lack than traditional inductance or capacitive ballast loss.

Claims

1, a kind of compensation fluorescent lamp ballast is made up of autotransformer and capacitor, it is characterized in that: the autotransformer primary coil is connected into capacitor and connects, series connection back two-end-point (A and C) incoming transport power supply; AC power connects the filament at fluorescent lamp two ends respectively to the tap terminals (B) of the end (A) of capacitor input and autotransformer.

2, compensation fluorescent lamp ballast according to claim 1, it is characterized in that also being provided with a winding (AA ') to the end (A) of capacitor input in AC power, be provided with another winding (BB ') at autotransformer tap terminals (B), two windings are access to the filament at fluorescent lamp two ends respectively.