CN2652086Y

CN2652086Y - Electronic ballast for controlling output for multiple fluorescent tubes

Info

Publication number: CN2652086Y
Application number: CN 200320117360
Authority: CN
Inventors: 蓝荣杨
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-27
Filing date: 2003-10-27
Publication date: 2004-10-27
Anticipated expiration: 2013-10-27

Abstract

The utility model provides a one-to-all fluorescent lamp electronic ballast capable of control all fluorescent lamps or partial fluorescent lamps to work or not to work. In order to solve relevant technical problems, a technical scheme adopted in the utility model is characterized in that: a control circuit is integrated in the ballast. All fluorescent lamp branches are connected with an electronic switch in series. A circuit switch is provided to control a select switch. The control circuit detects switching quantity of the circuit switch to realize corresponding output, control switch-on/off of the electronic switch, and realize control over fluorescent lamp branches.

Description

Many electronic ballast for fluoresent lamps are dragged in one of may command output

Affiliated technical field:

The utility model is a kind of electric type fluorescent lamp ballast, relates to electric lighting field.

Background technology:

Electronic ballast is with lumen coefficient height, the operating frequency height, and the premium properties that waits low in energy consumption is applied to various occasions.Many electronic ballast for fluoresent lamps are dragged in one of our practical application at present, divide according to the fluorescent lamp quantity that output is connect, and mainly contain: one drag two, drags three, one to drag four.These ballasts all use a fluorescent lamp drive circuit, have low cost, characteristics such as efficient height.Accompanying drawing 1 has shown one one schematic diagram that drags three electric ballast.In the drawings, the fluorescent lamp drive circuit output connects each branch road high frequency choke coil L1-L3, and L1-L3 connects fluorescent tube separately, a unified pin that is connected to C2 behind fluorescent tube, and another pin of C2 is received power end.Branch road high frequency choke coil and branch road fluorescent lamp are in series system, and branch road and branch road are in parallel way.There is a shortcoming in such circuit: when line switching was closed, all fluorescent lamps will be bright entirely, when line switching disconnects, will go out entirely.This situation is inconvenient in some occasion, and for example in office, the light fixture of use is the grid lamp disc that drags many electronic ballast for fluoresent lamps with.Evening, for saves energy, it is luminous just enough that the operator on duty wants to keep a fluorescent lamp when coming off duty, can standard-sized sheet but suffer from once holding, and have to allow it work daybreak.

Summary of the invention:

In order to address the above problem, the utility model provides the whole fluorescent lamps of a kind of may command luminous or the part fluorescent lamp is luminous, part fluorescent lamp non-luminous drags many electronic ballast for fluoresent lamps, the technical scheme that its technical problem that solves the utility model adopts is: the inner integrated control circuit of ballast, the electronic switch of in each fluorescent lamp branch road, connecting, adopt the line switching switch that elects of doing exercises, switch number of times by control circuit detection line switch, do corresponding output, the closure and the disconnection of control electronic switch realize the control of fluorescent lamp branch road.

The beneficial effects of the utility model are: allow one to drag many electronic ballast for fluoresent lamps to increase controlled output function, increased application flexibility, saved electric energy.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 traditional one drags three electronic ballast for fluoresent lamp schematic diagrams.

Fig. 2 is that one of the utility model embodiment drags three electronic ballast for fluoresent lamp schematic diagrams.

In Fig. 2, the effect that line switching plays and turns on light, the control section fluorescent lamp is luminous, turn off the light.L1, fluorescent tube 1, C5 form first branch road, and L2, fluorescent tube 2, C6 form second branch road, and L3, fluorescent tube 3, C7 form the 3rd branch road.R1, R2, R3, R4, control circuit, triode Q, relay J, L3 level, D5, D6, C3, C4 have formed control system.Relay J is connected with first, second branch road as electronic switch.Power supply is introduced through input, behind the switch closure, and through D1-D4, the C1 rectifying and wave-filtering, the direct voltage that obtains pulsing at the C1 two ends is powered to ballast drive circuit.Ballast drive circuit work, the output high-frequency alternating voltage, one tunnel normal-closed end through relay J is supplied with first branch road and second branch road.The 3rd branch road is supplied with on another road.At this moment three branch roads are worked simultaneously, and three fluorescent tubes are bright entirely.The low-voltage alternating-current of the secondary output of L3 is through D5, the C2 rectifying and wave-filtering, and one the tunnel powers for relay in advance, and another road powers to control circuit through D6.Control circuit B end output electronegative potential, triode Q ends, not adhesive of relay J.When needs are converted to a fluorescent lamp when luminous, disconnect line switching again closed at once, can not follow supply voltage because of the voltage at C4 two ends and drop to zero at once, still keep high potential by the control circuit operate as normal, control circuit A end just detects a pulse signal from the trailing edge to the rising edge, the control circuit upset, B end output high potential, triode Q conducting, relay J gets electric adhesive, normal-closed end disconnects, and first branch road and second branch road quit work.Fluorescent tube 1 and fluorescent tube 2 do not work, the 3rd branch road maintenance work, and fluorescent tube 3 is luminous.Instantly the primary line way switch disconnects when horse back is closed again, and control circuit is got back to initial condition, and fluorescent tube is bright entirely.So circulation, thus realize that single switch switches.

Claims

One kind the whole fluorescent lamps of may command are luminous or the part fluorescent lamp is luminous, part fluorescent lamp non-luminous drags many electronic ballast for fluoresent lamps, it is characterized in that: the inner integrated control circuit of ballast, the electronic switch of in each fluorescent lamp branch road, connecting, adopt the line switching switch that elects of doing exercises, switch number of times by control circuit detection line switch, do corresponding output, the closure and the disconnection of control electronic switch realize the control of fluorescent lamp branch road.
2. electronic ballast according to claim 1 is characterized in that: the electronic switch of connecting in each fluorescent lamp branch road.
3. electronic ballast according to claim 1 is characterized in that: the inner integrated control circuit of ballast.
4. electronic ballast according to claim 1, it is characterized in that: adopt the line switching switch that elects of doing exercises,, do output accordingly by the switch number of times of control circuit detection line switch, the closure and the disconnection of control electronic switch realize the control of fluorescent lamp branch road.