CN211352572U

CN211352572U - Lighting lamp circuit

Info

Publication number: CN211352572U
Application number: CN201920922102.7U
Authority: CN
Inventors: 王春妮
Original assignee: Shaanxi Institute of International Trade and Commerce
Current assignee: Shaanxi Institute of International Trade and Commerce
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-08-25
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a lighting lamp circuit, including first resistance R1, second resistance R2, third resistance R3, fourth resistance R4, fifth resistance R5, sixth resistance R6, seventh resistance R7, first electric capacity C1, second electric capacity C2, third electric capacity C3, potentiometre W1, first diode D1, second diode D2, third diode D3, bidirectional thyristor VS, first stabilivolt DW1, second stabilivolt DW2, first triode VT1, second triode VT2, load RL. The utility model discloses a light circuit is applicable to incandescent lamp and ordinary bulb, and it has functions such as overvoltage protection, extension bulb life-span, energy-conservation. The circuit is simple, and the use is convenient.

Description

Lighting lamp circuit

Technical Field

The utility model relates to a lighting lamp circuit, concretely relates to overvoltage protection and soft start circuit of light.

Background

The existing lighting lamp circuit generally only has a lighting function, does not have overvoltage protection and soft start functions, can not well prevent the lighting lamp from being damaged, and is inconvenient to use.

Disclosure of Invention

The utility model is directed to the above problem, the utility model provides an illumination lamp circuit, including first resistance R1, second resistance R2, third resistance R3, fourth resistance R4, fifth resistance R5, sixth resistance R6, seventh resistance R7, first electric capacity C1, second electric capacity C2, third electric capacity C3, potentiometre W1, first diode D1, second diode D2, third diode D3, bidirectional thyristor VS, first stabilivolt DW1, second stabilivolt DW2, first triode VT1, second triode VT2, load RL;

the first capacitor C1 is connected in series with the third diode D3 and then is connected across the two ends of the 220V alternating current power supply; after the first resistor R1 is connected with the first capacitor C1 in parallel, one end of the first resistor R1 is connected with one end of a 220V alternating current power supply, and the other end of the first resistor R2 is connected with the second resistor; the other end of the 220V alternating current power supply is respectively connected with the anode of a third diode D3, a second capacitor C2, the anode of a first voltage regulator tube DW1, one end of a potentiometer W1, a sixth resistor R6, a third capacitor C3 and a load RL;

the anode of the second diode D2 is connected with a second resistor R2; the cathode of the second diode D2 is connected to the second capacitor C2, the cathode of the first voltage regulator tube DW1, the third resistor R3, the fourth resistor R4 and the fifth resistor R5;

the negative electrode of the second voltage-stabilizing tube DW2 is connected with a fifth resistor R5, the positive electrode of the second voltage-stabilizing tube DW2 is respectively connected with the base electrode of the first triode VT1 and one end of a potentiometer W1, and the middle tap of the potentiometer W1 is connected with a sixth resistor R6; the collector of the first triode VT1 is respectively connected with the fourth resistor R4 and the base of the second triode VT 2; the emitter of the first triode VT1 is connected with the sixth resistor R6; a collector of the second triode VT2 is connected with the third resistor R3, and an emitter of the second triode VT2 is respectively connected with the third capacitor C3 and the seventh resistor R7; after the first diode D1 is connected in parallel with the bidirectional triode thyristor VS, the anode of the first diode D1 is connected with one end of a 220V alternating current power supply, and the cathode of the first diode D1 is connected with a load RL; the control end of the triac VS is connected to a seventh resistor R7.

Further, the third capacitor C3 is a 22 microfarad capacitor.

Furthermore, the first resistor R1 is a 560 kilo-ohm resistor, the second resistor R2 and the fifth resistor R5 are 100-ohm resistors, and the fourth resistor R4 is a 5.6 kilo-ohm resistor.

Further, the potentiometer W1 has a maximum resistance of 47 kohms.

Further, the first voltage regulator tube DW1 is an 8.1 volt voltage regulator tube, and the second voltage regulator tube DW2 is a 5.6 volt voltage regulator tube.

The utility model has the advantages that:

the utility model discloses a light overvoltage protection and soft start function circuit is applicable to incandescent lamp and ordinary bulb, and it has functions such as overvoltage protection, extension bulb life-span, energy-conservation. The circuit is simple, and the use is convenient.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

Fig. 1 is a schematic diagram of a lighting lamp circuit according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, as shown in fig. 1, a lighting lamp circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a second capacitor C2, a third capacitor C3, a potentiometer W1, a first diode D1, a second diode D2, a third diode D3, a triac VS, a first voltage regulator DW1, a second voltage regulator DW2, a first triode VT1, a second triode VT2, and a load RL; the load RL is an illumination lamp.

The third capacitor C3 is a 22 microfarad capacitor.

The first resistor R1 is a 560 kilo-ohm resistor, the second resistor R2 and the fifth resistor R5 are both 100-ohm resistors, and the fourth resistor R4 is a 5.6 kilo-ohm resistor.

The maximum resistance value of the potentiometer W1 is 47 kilo-ohms.

The first voltage-stabilizing tube DW1 is an 8.1 volt voltage-stabilizing tube, and the second voltage-stabilizing tube DW2 is a 5.6 volt voltage-stabilizing tube.

The triac VS is BT1361, and the first diode D1, the second diode D2, and the third diode D3 are all 1N 4007.

The utility model discloses the theory of operation of circuit:

as shown in FIG. 1, the circuit is directly connected to the AC220V power supply, the first diode D1 forms half-wave rectification during the positive half cycle of the power supply, the voltage at the RL end of the load is about 99V, and the brightness of the illuminating lamp is dim light. The other power supply is subjected to voltage reduction by a first capacitor C1, rectification by a second diode D2, filtering by a second capacitor C2 and voltage stabilization by a first voltage-stabilizing tube DW1, and then outputs about 6V direct current voltage for the control circuit to work. After the power is obtained, the second triode VT2 is in saturated conduction to charge the third capacitor C3, when the third capacitor C3 is charged to be more than about 2/3, current flows through the seventh resistor R7 to trigger the G pole of the bidirectional triode thyristor VS, the bidirectional thyristor VS is triggered to conduct, the brightness of the illuminating lamp is gradually changed from dim light to brightest, and the brightness of the illuminating lamp is determined by the time delay effect of the RC and the conduction angle of the bidirectional thyristor VS. When the grid voltage suddenly goes higher than AC 220V. The voltage of the rectifier circuit is increased, when the direct current voltage value is larger than the reverse breakdown value of the second voltage-stabilizing tube DW2, the second voltage-stabilizing tube DW2 is broken down, the base electrode of the first triode VT1 obtains forward bias voltage, the first triode VT1 is in saturation conduction, the second triode VT2 is cut off, the third capacitor C3 and the seventh resistor R7 form a delay network, after the delay discharge is finished, the bidirectional thyristor VS is turned off, and the illuminating lamp is turned back to dim light. The first resistor R1 in the circuit is a bleeder resistor.

The utility model discloses a during the circuit debugging, adopt the power voltage regulator, more than 220V is transferred to the alternating voltage value, second diode D2 output voltage should rise thereupon this moment, survey fifth resistance R5 end voltage with the universal meter and be higher than 5.6V, make second stabilivolt DW2 puncture, then readjust potentiometre W1, make first triode VT1 base voltage be about 0.7V, after obtaining the forward bias voltage, first triode VT1 saturation switches on, first triode VT 1's collecting electrode output low level, force second triode VT2 to end, light brightness reduction dim light is as far as.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A lighting lamp circuit is characterized by comprising a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a second capacitor C2, a third capacitor C3, a potentiometer W1, a first diode D1, a second diode D2, a third diode D3, a bidirectional thyristor VS, a first voltage regulator DW1, a second voltage regulator DW2, a first triode VT1, a second triode VT2 and a load RL;

2. The lamp circuit according to claim 1, wherein said third capacitor C3 is a 22 microfarad capacitor.

3. The lighting lamp circuit according to claim 1, wherein the first resistor R1 is a 560 k ohm resistor, the second resistor R2 and the fifth resistor R5 are 100 ohm resistors, and the fourth resistor R4 is a 5.6 k ohm resistor.

4. The lamp circuit according to claim 1, wherein the potentiometer W1 has a maximum resistance of 47 kohms.

5. The lamp circuit according to claim 1, wherein the first voltage regulator DW1 is an 8.1 volt regulator and the second voltage regulator DW2 is a 5.6 volt regulator.