CN2874926Y

CN2874926Y - Electronic switch

Info

Publication number: CN2874926Y
Application number: CN 200620003391
Authority: CN
Inventors: 陶伟洪
Original assignee: MEIMEI ELECTRONIC PRODUCT CO Ltd
Current assignee: MEIMEI ELECTRONIC PRODUCT CO Ltd
Priority date: 2006-01-27
Filing date: 2006-01-27
Publication date: 2007-02-28
Anticipated expiration: 2016-01-27

Abstract

The utility model discloses an electronic switch, which comprises a plastic bottom case, a plastic panel tightly fixed on the bottom case via a bolt, press keys and a reset spring disposed on the panel, and a control circuit board disposed inside the bottom case. On the control circuit board is provided a control circuit and a binding post, on the bottom of the plastic panel is provided another circuit board, and on the circuit board is provided micro-active switch that is corresponding to the press keys and electronically connected to the control circuit board. The electronic switch adopts field effect tube as the switch control element and adopts lagging edge phase control method; so that the noise pollution to environment is small and the light change process is soft. The electronic switch can realize remote switching control by setting additional remote control receiving circuit. The electronic switch can be controlled by both manual method and wireless remote or infrared ray remote method.

Description

Electronic switch

Technical field

The utility model relates to mains switch, is specifically related to a kind of illuminating lamp dimming electronic switch that adopts field effect transistor to constitute.

Background technology

In the prior art, the mains switch that is arranged on the wall all is the mechanical switch that adopts structure of contact terminal usually, the contact of mechanical switch is limited useful life, easily produce defectives such as loose contact, sparking, general electronic switch all is to adopt relay construction or adopt controllable silicon as control element.Adopt the electronic switch of relay construction, need to adopt the mode of two-wire power supply to work, do not have dimming function; And adopt the electronic switch of controllable silicon as control element, and in the light modulation process, can appear at supply voltage and just allow the controllable silicon conducting very high the time, will all produce very big impact to electrical network and load like this, produce bigger electromagnetic interference.In order to reduce the electromagnetic interference to electrical network, general method is the last inductance coil of serial connection, but can bring new side effect, promptly produces extra loss, increases electromagnetic noise.

The utility model content

The purpose of this utility model is, a kind of electronic switch is provided, this electronic switch has only a power firestreak input, it outputs to load with single line after controlling through switch again, another utmost point of load is switched to center line, can carry out switch control and brightness adjustment control or far distance controlled to incandescent lamp loads.

The technical scheme that the utility model provides is as follows: construct a kind of electronic switch, comprise drain pan, adopt the panel on the fastening drain pan of screw, be arranged on button and back-moving spring on the panel, also comprise the control circuit board that is arranged in the drain pan, control circuit board is provided with control circuit and binding post, bottom at described face-piece also is provided with a circuit board, is provided with the sensitive switch corresponding with described button on circuit board, and this sensitive switch is electrically connected with described control circuit board.

In above-mentioned electronic switch, described control circuit comprises that adopting model is the adjusting control circuit that single-chip power supply module, microcomputer MCU and the peripheral components suitable with it of TNY253P constitutes, and adopts the alternating-current switch main circuit of 4 field effect transistor Q1, Q3, Q2, Q4 and resistance R 5, R6, R8, R9 formation.

In above-mentioned electronic switch, also comprise the face-piece that is fastened on the described panel, on the circuit board of described panel bottom, be provided with work indication light-emitting diode, on described panel, be provided with the loophole corresponding with light-emitting diode.

The utlity model has following advantage: when this electronic switch is installed, only need to introduce the input of a live wire to switch, again from the load that goes between of the output of switch, promptly under the situation of the mode of connection that does not change original mechanical switch, just can realize automatic open and close or brightness adjustment control to load, this electronic switch adopts field effect transistor as its switch control element, and the employing back is along the method for phase control, that is to say, in alternating voltage zero-crossing moment, allow the field effect transistor conducting that to open, when reaching set point, field effect transistor is turn-offed.Because the voltage in the load begins to increase gradually from minimum point, so impulse current is little, the electromagnetic interference that electrical network is caused is also just very little, the noise pollution that environment is caused is also very little, it is very soft that the process of light modulation also seems, by setting up remote-control receiving circuit, can realize distance switch control to electronic switch.Make this electronic switch both can adopt manual mode to control, also can adopt the mode of wireless remote control or infra-red remote control to control.

Description of drawings

Fig. 1 is the front view of electronic switch;

Fig. 2 is the blast structure chart of electronic switch;

Fig. 3 is the main circuit schematic diagram of electronic switch;

Fig. 4 is the remote-control receiving circuit schematic diagram that is used for electronic switch.

Embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, a kind of electronic switch is provided, comprise that drain pan 2, employing screw are fastened on the panel 5 on the drain pan 1, be arranged on button 3 and back-moving spring 4 on the panel 5, also comprise the control circuit board 8 that is arranged in the drain pan 1, control circuit board 8 is provided with control circuit and binding post 9, also is provided with a circuit board 6 in the bottom of face-piece 1, be provided with the sensitive switch corresponding with button 7 on circuit board 6, this sensitive switch 7 is electrically connected with control circuit board 8.Control circuit comprises that adopting model is the single-chip switching power supply module of TNY253P, microcomputer MCU integrated package 11, and the adjusting control circuit of the device suitable formation with it, the alternating-current switch main circuit that adopts 4

field effect transistor

12,13,14,15 and resistance R 5, R6, R8, R9 to constitute.Fastening on panel 5 has a face-piece 1, is provided with power supply indication luminous tube 601 on the circuit board 6 of panel 1 bottom, has the loophole corresponding with luminous tube 601 on panel 5.

With reference to shown in Figure 3, in main circuit diagram, field effect transistor 12 (Q1), 14 (Q3) reach and they are made of one fly-wheel diode, resistance R 5, R6, R8, R9 have just constituted the main circuit of alternating-current switch together, and field effect transistor 13 (Q2), 15 (Q4) are the field effect transistor in parallel respectively in order to increase load capacity.At the positive half cycle of power supply, electric current is come in from live wire input port Lin, through by MCU order conducting 12, resistance R 5, R8 etc., through the fly-wheel diode of field effect transistor 14, Lout delivers to load from the output line port again, again through load flow to the midline, and at the electric current negative half period, sense of current just conversely, but at this moment field effect transistor 14 is by MCU order conducting, the fly-wheel diode in the field effect transistor 12 flows to Lin by current reversal.

The conducting of field effect transistor 12 (Q1), 14 (Q3) is all sent instruction and conducting by microcomputer MCU when the supply voltage zero passage; requirement according to light modulation; the time of wanting of what is the need in office is turn-offed field effect transistor 12 (Q1), 14 (Q3); the network that resistance R 5, R6, R8, R9 form; be size, and reach the purpose of overload protection for the load current of sampling.Because whole switch does not have center line, so the power supply of control circuit part just obtains relatively difficulty.In the example of figure one, can adopt following method:

In static state, that is to say and do not obtain the order of turning on light, field effect transistor 12 (Q1) and field effect transistor 14 (Q3) are when being in cut-off state, at the positive half cycle of supply voltage, the power taking electric current enters from the Lin port, through diode D1, D2, storage capacitor C4, behind the filter inductance L2, again through simulation ground, resistance R 8, after the afterflow two extremely of R9 and field effect transistor 14 (Q3), from output port Lont, again through loading to center line, in the process of current flowing, capacitor C 4 is recharged, the enough enough energy of deposit are sent on the single-chip switching power supply module TNY253P then, just can obtain a galvanic current potential source at the TNY253P source electrode, negative half period at supply voltage, charging current on the capacitor C 4 is to arrive first the Lout port from load, through diode D3, behind the D2, again by simulation ground, resistance R 5, the fly-wheel diode of R6 and Q1, from the Lin port flow to live wire.

In working order, that is to say that the voltage drop between port Lint and the Lout was very little when field effect transistor 12 or field effect transistor 14 were in conducting state, this voltage drop can not offer the normal charging current of C4.The way that solves is in per half cycle, allow the ON time of

field effect transistor

12 and 14 all be not more than the regular hour, normally be controlled in time of 88%, in the 12% remaining time, voltage between Lin and Lout port just can return to be enough to be the C4 charging degree, so just can guarantee that control circuit partly obtains enough energy and supplies with, and in load, also can make it obtain enough energy and continous-stable luminous.

With reference to Fig. 4, in above-mentioned electronic switch, can also further improve, can on control circuit board, set up a remote signal receiving circuit that is connected with adjusting control circuit.Can realize far distance controlled to electronic switch; The remote signal receiving circuit can be a kind of in the following receiving circuit: radio remote control receiving circuit, infrared remote control receiving circuit.

Claims

1, a kind of electronic switch, comprise that plastics drain pan, employing screw are fastened on the plastic front board on the drain pan, be arranged on button and back-moving spring on the panel, it is characterized in that, also comprise the control circuit board that is arranged in the drain pan, control circuit board is provided with control circuit and binding post, also is provided with a circuit board in the bottom of described face-piece, be provided with the sensitive switch corresponding with described button on circuit board, this sensitive switch is electrically connected with described control circuit board.

2, electronic switch according to claim 1, it is characterized in that, described control circuit comprises that adopting model is the switch adjusting control circuit that single-chip power supply module, microcomputer MCU and the peripheral components suitable with it of TNY253P constitutes, and adopts 4 field effect transistor Q1, Q3, Q2, Q4 and resistance R 5, R6, R8, R9 formation alternating-current switch main circuit.

3, electronic switch according to claim 1 and 2, it is characterized in that, also comprise the plastics face-piece that is fastened on the described panel, on the circuit board of described panel bottom, be provided with work indication light-emitting diode, on described panel, be provided with the loophole corresponding with light-emitting diode.

4, electronic switch according to claim 1 and 2 is characterized in that, also is provided with the remote signal receiving circuit that is connected with described adjusting control circuit on described control circuit board.

5, according to claim 4 at wiretap, it is characterized in that the remote signal receiving circuit can be a kind of in the following receiving circuit: radio receiver circuit, infrared radiation receiving circuit.