CN2165543Y

CN2165543Y - Auto-plug

Info

Publication number: CN2165543Y
Application number: CN 92241228
Authority: CN
Inventors: 马希光
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-09
Filing date: 1992-11-09
Publication date: 1994-05-18
Anticipated expiration: 2002-11-09

Abstract

The utility model relates to an automatic plug, particularly the mode that a circuit with a photoresistor, an SCR and a commutator at both ends of the traditional plug. Thus two output ends after connected can be connected to a lamp. A light receptor of the photoresistor is exposed outside the plug. So that the power is cut off when the light receptor of the photoresistor receives the light and the power is switched on when the light is insufficient to cause a bulb to light. Thus the inconvenience that the existing similar products need switching by manual operation of a user is avoided.

Description

Auto-plug

The utility model relates to a kind of attaching plug, particularly a kind of can be with the ambient light power attaching plug of automatic open close.

People use the occasion of plug electricity consumption a lot of, but all household electrical appliance must be through a plug so that energized when needing, so all there are the requirement and the standard of secure context in various countries to attaching plug.

With light fixture, especially the desk lamp of active type, work light one wiring is all arranged, and an end of wiring are plug, in the socket on the terminal block that inserts on the wall or establish for extension wire, cooperate the switch Switching power again.

Regular meeting has following situation to take place in the life: light the mini light night sleep when night; or fall asleep unconsciously with the Moveable desk lamp book or newspaper reading; after daybreak; because the luminosity of its luminosity and surrounding environment is suitable; forgotten it is turned off so often be difficult for realizing; so not only waste electric power, also can shorten bulb life.

Another kind of situation is, when people go out and night not the time, to open a mini light night or general normal lighting lamp usually, in order to avoid the thief slips into, simultaneously, also for owner return provide when opening the door base lighting just.Another occasion then is the illuminating lamp on garden or doorway, and the switching at night its day must be switched by manual operation at present, and on a rare occasion carelessness is promptly kept burning day and night more than, forms meaningless waste.

The applicant promptly at above-mentioned prior art problems through for many years the experiment, develop " Auto-plug " of the present utility model finally.

The purpose of this utility model is to provide a kind of Auto-plug, makes it the automatic on-off power supply with the power of ambient light, to exempt the inconvenience that present palpus manually switches.

Auto-plug of the present utility model is to install an automatic control circuit of being made up of silicon controlled rectifier (SCD), resistance and photo resistance (CDS) series connection bleeder circuit and Zener diode (ZD) in the shell of traditional plug additional, and photo resistance is exposed to outer and formation.Compare with ordinary plug, automatic controlled function that this Auto-plug is many promptly has with the ambient light light and shade effect of cut-out and energized automatically, so purposes is more extensive, particularly can be used for the automatic control to light fixture, thereby has saved electric power.

Be further to disclose concrete technology contents of the present utility model, now be described with reference to the accompanying drawings as follows, in the accompanying drawing:

Fig. 1 is the schematic perspective view of the utility model Auto-plug;

Fig. 2 is the circuit diagram of the utility model Auto-plug.

As shown in drawings, the utility model Auto-plug is the tight plan standard that the standard of its standard is arranged certainly at a traditional plug 1() in be connected to circuit as shown in Figure 2, and in a side of plug 1, outside the photo resistance 11 of this circuit is exposed to.

Please consult the circuit of Fig. 2 again, originally on the left of contact C and contact D(such as dotted line separations) directly be connected to present traditional plug circuit, can link bulb or load between its terminal L1 and L2 and form the loop.

The utility model plug then between former contact C point and contact D, links the circuit of a photo resistance 11, and make between contact C and contact D must be through this circuit and conducting.

So under normal brightness, the voltage that A is ordered (by the internal driving dividing potential drop of resistance R 1 and CDS) deficiency is so that Zener diode (ZD) punctures, silicon controlled rectifier (SCR) is not worked, so the time between L1 and L2 load because of no current by starting; And during the brightness deepening, the CDS impedance increases, and the A point voltage improves, when reaching the ZD breakdown point, trigger SCR simultaneously, and make the SCR conducting, make circuit be channel status, at this moment, current flowing is then arranged between L1 and L2, and the electrical equipment of controlling through plug (as light fixture) promptly starts, so, as long as change resistance value or the ZD of R1, can adjust the brightness of light fixture.

For overcoming the luminance shortage of light fixture, (being on the left of the dotted line of contact C and contact D is separated) adds and puts commutator and be full-wave rectification the utility model in power supply input back.

The utility model plug can be used as AC110V or AC220V plug, during enforcement, as CDS during between 0-5M Ω, if be used for 110V, then R1 is 12K Ω 1/2W, and ZD is 4.7V, and when being used for AC220V, then R1 is 33K Ω 1/2W, and ZD is 12V, so be applicable to present lighting bulb fully.

Claims

A kind of attaching plug of automatic switchover comprises with the plug body (1) of two power pins and places a circuit in it that described circuit comprises a rectification circuit, and its input is connected with described pin; It is characterized in that described circuit also comprises:

One silicon controlled rectifier (SCR), its anode is connected with the positive-negative output end of described rectification circuit respectively with negative electrode, and wherein be serially connected with on connecting line described attaching plug face terminals (L1, L2);

Bleeder circuit by resistance (R1) and photo resistance (CDS) series connection form is connected across between described anode and the negative electrode in turn, and the light-receiving device of described photo resistance (11) then is exposed to outside shell one side; And

One Zener diode (ZD), its positive pole extremely links to each other with the control of described silicon controlled rectifier, and negative pole is connected to the mid point of described bleeder circuit.