CN2214726Y

CN2214726Y - Automatic delay-action lamp switch

Info

Publication number: CN2214726Y
Application number: CN 94231504
Authority: CN
Inventors: 顾宝彦
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-15
Filing date: 1994-12-15
Publication date: 1995-12-06
Anticipated expiration: 2004-12-15

Abstract

The utility model discloses an automatic delay-action lamp switch which belongs to the technical field of switches and comprises a panel, a spring, a circuit board, a button, etc. The utility model has the essential technical proposal that a normally open node control switch is connected with a power source; the power source which is connected with a bridge rectifier via a capacitor is connected in parallel with the output terminal of the bridge rectifier; a pulse circuit and a bistable trigger circuit are triggered by a single crystal transistor; a light emitting diode circuit is connected in parallel with an input power source; one end of the load is connected with the control end of the normally open node control switch. The utility model has the advantages that no power consumption in the circuit when a lamp is off; the automatic delay-action lamp switch can be matched with a terminal box; the use at night is convenient because the switch can be indicated by light; the lamp is off after a person leaves; the energy can be saved; the design is simple; the cost is low; the manufacture is easy.

Description

Automatic time delay light-off switch

The utility model belongs to the switching technique field, is a kind of automatic time delay light-off switch.

At present, building corridor lamps such as dwelling house, office all do not have time-delay control, and it is still bright that the people walks lamp, causes altar lamp, and therefore the waste electric energy, is sought after a kind of automatic time delay light-off switch.

The purpose of this utility model provides that a kind of cost is low, energy savings, automatic time delay light-off switch easy to use.

The purpose of this utility model is achieved in that it is by panel, spring, parts such as circuit board, button are formed, its technical essential is: power supply (220V) connects often drives the node control switch, connect bridge rectifier through capacitor, the bridge rectifier output also connects, single crystals transistor trigger impulse circuit, and bistable trigger-action circuit, circuit of LED and input power supply also connect, and load one end connects the control end of often driving the node control switch.

The utility model has the advantages that when lamp did not work, circuit did not have power consumption, the direct and supporting use of terminal box of automatic switch.Night is easy to use, and the switch lighting indication is arranged, turn off the light when you leave, and energy savings, simplicity of design, cost is low, makes easily.

Below in conjunction with accompanying drawing the utility model is done further auspicious stating.

Fig. 1 is panel figure of the present utility model

Fig. 2 is the A-A cutaway view of the utility model Fig. 1

Fig. 3 is the circuit diagram of the utility model Fig. 1

Number in the figure is described as follows: 1, shift knob; 2, panel; 3, fixture; 4, circuit board; 7, power supply input-output line seat; 8, illumination indication output line seat; 9, fuse holder; 10, bonnet; 11, spring, 12, the control switch node; 13, junction point of traverses; 14, light-emitting diode.

As shown in the figure, the utility model is made up of parts such as panel 2, spring 11, circuit board 4, shift knobs 1, and referring to Fig. 4, power supply (220V) connects often opens node control switch QA _1,2,3, through capacitor C cross structure D _1-4, bridge rectifier D _1-4Output and connect, single crystals transistor trigger impulse circuit BG ₁And flip-flop circuit (BG ₂, BG ₃), LED _1,2,3Circuit is with input power supply V and connect, load W-end is connected and often opens node control switch QA _1,2,3Control end.

Among Fig. 3 in the circuit element be described as follows: RD is a fuse, R ₂Be microminiature adjustable potentiometer, R ₄Be 1 watt of metalfilmresistor, R ₁-R ₇Be fixed carbon resister, D ₁-D ₅Be diode, LED _1,2,3Be light-emitting diode, W is 220V, 40W incandescent lamp, and C is an ac capacitor, C ₁, C ₂Be dc capacitor, BG ₁Be unijunction transistor, BG _2,3Be triode.

220V main fuse RD, button QA _1,2,3Through decompression capacitor C to bridge rectifier, delivery outlet volt direct voltage, for circuits for triggering work, at first bistable state BG ₃Conducting, relay adhesive, button QA _1,2,3Two ends relay J battle self-locking.Unijunction transistor BG ₁Pass through R ₁, R ₂To C ₂The electric capacity charging is by unijunction transistor BG ₁To impulse wave of bistable state output, make the bistable circuit upset, BG ₃End, relay J discharges, and contact J decontrols, the entire circuit dead electricity, and end-of-job touches the button again, and once more repeatedly, delay time is influenced by miniature potentiometer resistance, increases resistance R ₁, the delay time lengthening, vice versa, and delay time is by transferring resistance R ₂Realize.Press the button switch during use, power turn-on, relay work, loaded work piece, the LED lamp goes out, and through a few minutes time-delay, power supply is cut off, and lamp is closed automatically, and LED is luminous.

Claims

1, a kind of automatic time delay light-off switch, it is made up of parts such as panel, spring, circuit board, buttons, it is characterized in that: power supply connects often drives the node control switch, connect bridge rectifier through capacitor, the bridge rectifier output also connects, single crystals transistor trigger impulse circuit, and bistable trigger-action circuit, circuit of LED and input power supply also connect, and load one end connects the control end of often driving the node control switch.