CN2252477Y - Multifunction combined switch - Google Patents

Abstract

The utility model relates to a multifunction combined switch which is mainly composed of a switch, a ballast, a safety device, a jack, a voltmeter, a binding post, an outer shell, etc., wherein, the ballast is designed according to the principle of full wave voltage doubling rectification, so the ballast has small size and compact structure and is good for being arranged in the same outer shell with the switch, the safety device, etc. The utility model has the advantages of convenient installation, easy repair and change of component and low cost.

Description

Multi-functional unit switch

The utility model relates to a kind of unit switch, particularly a kind of multi-functional unit switch that has fluorescent lamp ballast.

Existing various switches, wherein handlebar socket, safeties, voltmeter, switch place the switch (or socket) of same shell.But existing these switches, no matter be that single functional switch or multifunction switch do not have fluorescent lamp ballast, thereby with the supporting use of fluorescent lamp the time, ballast need be installed in addition, and ballast generally is installed in the daylight lamp bracket or other positions on, fluorescent lamp and lamp bracket thereof often are lifted on the ceiling of building again or are embedded in the ceiling board, and this brings very big inconvenience for installation, trouble hunting and replacing of ballast and circuit thereof.

The purpose of this utility model is exactly to have proposed a kind of multi-functional unit switch that has electric ballast for the above-mentioned deficiency that overcomes regular tap, and it places same shell to switch, safeties, socket, voltmeter etc. with fluorescent lamp ballast.Because what use is electric ballast, volume is little, thereby compact conformation, the fluorescent lamp little power consumption that connects with it starts rapidly, and operating voltage range is wide, luminous stable, fluorescent lifetime is long, and because of this unit switch is installed on the wall or is embedded under the metope, brings great convenience for installation, trouble hunting and the replacing of ballast and circuit thereof.

Fig. 1 is an electrical structure diagram of the present utility model, and Fig. 2 is the circuit theory diagrams of electric ballast N, and they are one of embodiment of the present utility model.

Below describe the utility model in detail referring to Fig. 1, Fig. 2, These characteristics will be more readily apparent from.

H is the shell of this unit switch; I is a lead-in clamp, and it is fixed on a side of shell, and electric main is from input here; V is an A.C. voltmeter, the current ac voltage of its indication; P ₁, P ₂Be safeties, they are fuse or protective tube; K is a switch, and it is controlling the open and close of fluorescent lamp; N is an electronic ballast for fluorescent lamp; O is an output wiring terminal, is connected with the fluorescent lamp two ends by lead; C is appliance socket (jack), and other electrical equipment can be connected with it by plug.Binding post I, O, voltmeter V, safeties P ₁, P ₂, K switch, ballast N, jack C all are fixed in the shell H, can have many windings terminal I and O, voltmeter V, safeties P in the same shell simultaneously ₁And P ₂, K switch, ballast N, jack C etc., composition can patch the multi-functional unit switch of many fluorescent lamps and a plurality of other electrical equipment simultaneously, whole unit switch is fixed on the building wall or is embedded in the metope.

Fig. 2 is the circuit theory diagrams of the electric ballast N in this multi-functional unit switch, and it is by capacitor (or in parallel, series capacitors group) C ₁, C ₂, diode (or diode group of series, parallel) D ₁, D ₂Deng composition, diode D ₁, D ₂Polarity reversal connection simultaneously, entire circuit is equivalent to a full-wave voltage doubler.

For the purpose of understanding, the instantaneous voltage polarity lower end of 220V electric main of suppose input is for just, and the upper end is in the negative half period of alternating voltage at this moment for bearing.Diode D ₁Conducting is similar to short circuit, D ₂End, be similar to open circuit, capacitor C ₁Be recharged, its voltage reaches the crest voltage of alternating voltage (U is the effective value of alternating voltage), the polarity of charging voltage are that the right side is just being born in a left side.When alternating voltage becomes positive half cycle, promptly the polarity of input voltage upper end is being for just, the lower end when bearing, diode D ₂Conducting, capacitor C ₂Be recharged, charging voltage reaches the crest voltage of alternating voltage

Polarity of voltage is that a left side is positive right negative.While capacitor C ₁Discharge, discharge voltage is by diode D ₂Be added on the fluorescent lamp L, so the voltage on the fluorescent lamp L equals the crest voltage of alternating voltage Add capacitor C ₁On storage voltage

Promptly

When the alternating voltage of input becomes negative half period again, diode D ₁Conducting, D ₂End capacitor C ₁Be charged to the crest voltage of alternating voltage again

The right side is just being born, capacitor C in a polarity left side ₂By diode D ₁Discharge, discharge voltage is added on the fluorescent lamp L, and magnitude of voltage is the crest voltage of alternating voltage

Add capacitor C ₂On storage voltage

Be

So go round and begin again, make fluorescent lamp L obtain the instantaneous high pressure of a little electric current, L by instantaneous starting after both end voltage be reduced to a steady state value immediately and keep its normally, stably luminous.

Claims (2)

1, a kind of multi-functional unit switch comprises voltmeter V, safeties P ₁And P ₂, jack C, binding post I and O, shell H, it is characterized in that ballast N, K switch in addition, binding post O outputs to fluorescent lamp L two ends, the Kai Heguan of K switch light modulation on controll day L;

2, multi-functional unit switch according to claim 1 is characterized in that ballast N is the electric ballast of an employing full wave and voltage doubling rectification principle design, has only two output lines, mainly is made of capacitor C capacitor and diode ₁An end and capacitor C ₂An end link to each other diode D ₁An end and diode D ₂An end link to each other capacitor C ₁The other end and diode D ₁The other end link to each other capacitor C ₂The other end and diode D ₂The other end link to each other capacitor C ₁, C ₂The end and the diode D that link to each other ₁, D ₂An end that links to each other is as the input of alternating voltage, capacitor C ₁With diode D ₁The end and the capacitor C that link to each other ₂With diode D ₂An end that links to each other is an output, and output is connected to the two ends of fluorescent lamp L.