CN102497696A - Switching circuit of brightness gradually-changing light in bedroom - Google Patents

Abstract

A switching circuit of a brightness gradually-changing light in a bedroom comprises a direct current voltage G, a selector switch SA, a resistor R, a capacitor C and a solid-state relay PSSR, wherein the selector switch SA can be shifted to a pin 1 and a pin 2 and be simultaneously connected with the resistor R; the capacitor C is 100 uF and is respectively connected with a pin 1 and a pin 4 of the solid-state relay PSSR; and a pin 5 and a pin 6 of the solid-state relay PSSR are respectively connected with two ends of a 220V power source and a light H1. The switching circuit can be used for controlling light to gradually change from dimness into brightness or from brightness into dimness when a light in the bedroom is turned on or turned off, accordingly not only is discomfort caused by sudden on or off of the light to eyes eliminated, but also impact caused by heavy current to cold-state filaments is avoided, and the service life of a bulb can be prolonged.

Description

Bedroom light and light switch circuit

technical field

The invention relates to a switch circuit for a gradually brightening and dimming lamp, which belongs to the field of household appliances.

Background technique

At present, families often need to turn on the lights at night. Under strong lights, people's eyes often feel very dazzling, which brings people a very uncomfortable feeling. This circuit can well control the gradual brightening and dimming of lights, which brings convenience to life. .

Contents of the invention

The purpose of the present invention is to provide a circuit design for a gradually brightening and dimming light switch in a bedroom according to actual needs.

The switching circuit of the present invention includes a DC voltage G, a selection switch SA, a resistor R, a capacitor C, and a solid state relay PSSR. The selection switch SA can be pulled to pins 1 and 2 of the line connected to the DC voltage G, and connected to the resistor R at the same time. The capacitor C is 100uF, which are respectively connected to pins 1 and 4 of the solid state relay PSSR; pins 5 and 6 of the PSSR are respectively connected to At the two ends of the 220V power supply and the lamp H1; PSSR can choose domestic JCG-1A/220V, and the power of the lamp should be less than or equal to 100W.

The core device of this circuit is the AC parameter solid-state relay PSSR, which works in the active positive power drive mode, and its characteristics can be expressed by the characteristic curve shown in the figure: when there is more than 1V between pins 2 and 4 of the drive end ( Current ≥ 1uA) when the voltage U1, 4 is input, the voltage drop U5, 6 between the 5th and 6th pins of the AC output terminal of the PSSR is close to 220V, and the PSSR is in an off state; when the input voltage U1, 4<1V, the PSSR’s 5th pin The voltage drop between pins 5 and 6 between pins U5 and 6 is close to 0V, and the PSSR is in a conducting state. When U1 and 4 are around 1V, PSSR is at the linear control terminal, and the voltage drop between pins 5 and 6 of U5 and 6 shows a linear change with the rise and fall of U1 and 4. This circuit uses this characteristic to realize For the soft on and off control of the lamp H1.

Beneficial effects of the present invention: the switch can control the light in the bedroom to gradually change from dark to bright or from bright to dark when the light in the bedroom is turned on or off. The impact of strong current on the cold filament can effectively prolong the service life of the bulb.

Description of drawings

Figure 1 is the circuit diagram of the light switch in the bedroom. G is a DC voltage of 3V, SA is a selection switch, which can be pulled to pins 1 and 2, and connected to the resistor R at the same time, and the resistance of the resistor is 470K. Capacitor C is 100uF, connected to pins 1 and 4 of the solid state relay PSSR respectively. Pins 5 and 6 of the PSSR are connected to the 220V power supply and the two ends of the lamp H1 respectively. PSSR can choose domestic JCG-1A/220V, and the power of the lamp should be less than or equal to 100W.

Detailed ways

The switching circuit of the present invention includes a DC voltage G, a selection switch SA, a resistor R, a capacitor C, and a solid state relay PSSR. Selector switch SA can be pulled to pins 1 and 2, and connected to resistor R at the same time, capacitor C is 100uF, connected to pins 1 and 4 of solid state relay PSSR respectively; pins 5 and 6 of PSSR are respectively connected to 220V power supply and lamp H1 Both ends; PSSR can choose domestic JCG-1A/220V, and the power of the lamp should be less than or equal to 100W.

The required driving voltage is provided by the battery G to the parameter solid state relay PSSR. When the switch SA is set to "1", the battery G charges the capacitor C through the resistor R, the voltage between the 1st and 4th pins of the power drive terminal of the PSSR continues to rise, and the voltage between the 5th and 6th pins of the output terminal is about 2V Gradually increase to 220V, and the lamp H1 goes out slowly; when SA is placed at position "2", the charged C discharges through R, the voltage between the 1st and 4th pins of the PSSR gradually decreases, and the voltage between the 5th and 6th pins is changed by 220V gradually drops to about 2V, and the lamp H1 is slowly lit.

Claims (1)

1. bedroom bright-dark light switch circuit, it is characterized in that: said circuit comprises direct voltage G, selector switch SA, resistance R, capacitor C, solid-state relay PSSR;

Selector switch SA can pull out 1,2 pin to the circuit that connects direct voltage G, is connected to simultaneously on the resistance R, is connected respectively to 1,4 pin of solid-state relay PSSR; 5,6 pin of PSSR are connected to the two ends of power supply and the electric light H1 of 220V.

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