CN2176634Y

CN2176634Y - Optic controlling switch for fluorescent lamp

Info

Publication number: CN2176634Y
Application number: CN 93246999
Authority: CN
Inventors: 沈健隆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-11
Filing date: 1993-12-11
Publication date: 1994-09-07
Anticipated expiration: 2003-12-11

Abstract

The utility model relates to an optic controlling switch for fluorescent lamps, comprising a rectifying circuit, a zener diode, a transistor, a photoresistor, a relay, a resistor and a capacitance. The 220 volt alternate current or the 110 alternate current provides the direct voltage through a reducing resistance, a bridge rectifier and a zener diode and supplies a directly-coupled double-tube transistor amplifying circuit; when the photoresistor is reduced because of receiving light, and the resistance value becomes larger, and when the first stage transistor is cut off, the second stage transistor enters the saturation conducting state; the relay works, so that the optic controlling switch for fluorescent lamps adds the electricity to the fluorescent lamp tube to conduct.

Description

Optic controlling switch for fluorescent lamp

The utility model relates to a kind of fluorescent lamp control switch, is meant a kind of fluorescent lamp light-operated switch of being controlled by bright and dark light especially.

Now, the existing automatic switch that uses photo resistance to control incandescent lamp bulb, but this kind switch can't be applied in the fluorescent lamp control.Some American-European countries, the regulation doorplate must provide lighting apparatus, existing light-operated switch can only provide incandescent lamp to use at night.And, in general work occasion, classroom, family, because daylight, lamplit inappropriate causes common people's hypopsia; At well-lighted local work, help the raising of fail safe and efficient, the generation that reduces errors, and light is too strong, runs counter to desire again, so, no matter be the production environment in factory, still general family or office, classroom all need to stablize good illumination, this also is to press in the daily life, must meet economic the saving and the convenient characteristic of using simultaneously again.

The purpose of this utility model provide a kind of can sensing chamber the whether suitable fluorescent lamp light-operated switch of intraoral illumination.

The utility model is made up of rectification circuit, voltage stabilizing didoe, transistor, photo resistance, relay and resistance, electric capacity.It is characterized in that: AC power is behind resistance-capacitance depressurization and bridge rectifier, obtaining galvanic current by voltage stabilizing didoe presses, supply with direct-coupled pair transistor common emitter amplifying circuit, wherein be serially connected with photo resistance and variable resistor in the transistorized base loop of the first order, be serially connected with in the transistorized collector electrode in the second level can controll day, whether light modulation powers up relay.

The utility model is thrown light on by the strong and weak control automatically of light fluorescent start and closes, and circuit structure is simple, is convenient to install and use, and meets economic illumination and easy convenience and practicality are installed.This device also can be used for controlling incandescent lamp and other lighting installations.

Below in conjunction with accompanying drawing, specifically introduce architectural feature of the present utility model.

Fig. 1 is a finished product structure chart of the present utility model.

Fig. 2 is an electrical schematic diagram of the present utility model.

Fig. 3 is the assembly drawing of the utility model and fluorescent lamp group.

Consult Fig. 1, the utility model is by

bridge rectifier

22,23,24,25, and main elements such as voltage stabilizing didoe 27 and two

transistors

31,34 and photo resistance 36 and relay 30 are formed.

Fig. 2 is a circuit diagram of the present utility model.It is to provide 110 volts or 220 volts of power supplys by

AC power

10,11, behind the bridge rectifier of resistance 20 and electric capacity 21 step-downs and

diode

22,23,24,25 formations, obtaining galvanic current by voltage stabilizing didoe 27 presses, this voltage can provide direct-coupled

pair transistor

31,34 common emitter amplifying circuits and relay 30, photo resistance 36, makes its operate as normal.Wherein be serially connected with photo resistance 36 and variable resistor 38 in the base loop of first order transistor 31, be serially connected with in the collector electrode of second level transistor 34 can controll day, whether light modulation powers up relay 30.By day or when bright and clear, photo resistance 36 is in low resistive state, the base stage B2 of transistor 31 has enough current potentials to make transistor 31 be in the saturation conduction state, at this moment, because transistor 31 conductings, make the current potential of its collector electrode C2 lower, thereby make transistor 34 be in cut-off state, relay 30 is failure to actuate.This relay 30 also can substitute it with controllable silicon.

When the colour of sky grows dark gradually, photo resistance 36 is reduced by illumination, its resistance becomes increasing, the base stage B2 current potential of transistor 31 also reduces gradually, transistor 31 is transferred to end, its collector electrode C2 is in high potential, makes transistor 34 enter the saturation conduction state, allow relay 30 adhesives, power up to fluorescent lamp and illumination is provided.Wherein variable resistor 38 is connected to

electric capacity

33,35 respectively through adjusting the light-operated switch that can be set under the different illumination on two transistorized base stages, and disturbing pulse that can the filtering critical condition makes two

transistor

31,34 working properly.

Fig. 3 is the utility model and fluorescent lamp assembly drawing.Wherein photo resistance 36 causes light receiving area by lead, but will avoid being subjected to the light source direct irradiation, if the sensitive surface of photo resistance 36 is turned to floor or ceiling, then effect is preferable.The utility model also can use in the control to incandescent lamp bulb and lighting device.

Claims

1, a kind of fluorescent lamp light-operated switch, form by rectification circuit, voltage stabilizing didoe, transistor, photo resistance, relay and resistance, electric capacity, it is characterized in that: AC power is behind resistance-capacitance depressurization and bridge rectifier, obtaining galvanic current by voltage stabilizing didoe presses, supply with direct-coupled pair transistor common emitter amplifying circuit, wherein be serially connected with photo resistance and variable resistor in the transistorized base loop of the first order, be serially connected with in the transistorized collector electrode in the second level can controll day, whether light modulation powers up relay.

2, fluorescent lamp light-operated switch as claimed in claim 1 is characterized in that: above-mentioned relay can substitute it with controllable silicon.

3, fluorescent lamp light-operated switch as claimed in claim 1 is characterized in that: on two base stages of direct-coupled pair transistor amplifying circuit, be connected to respectively can the filtering interfering pulse electric capacity.