CN201044520Y - Two-wire two-way light string controller - Google Patents

Abstract

A two-line and two-way light string controller relates to a string controller which comprises a control signal generation unit (1) and drive units; the utility model is characterized in that: the control signal generation unit (1) and the drive units (2) are supplied with electrical source by a power supply circuit (4); the control signal generation unit (1) provides drive signals for at least one set of the drive units (2, 3) alternately or simultaneously. As the control signal generation unit (1) of the utility model can alternately or simultaneously use at least one set of the drive unit to operate, the two-line and two-way light string achieves alternate lighting or simultaneous lighting and can not only achieve color-changing function but also saves circuit wiring; the utility model is used in places of lighting decoration.

Description

Two-wire two-way light string controller

technical field

The utility model relates to a controller of a lamp string.

Background technique

The patent No. 03228237.0 announced by the Chinese Patent Gazette on April 14, 2004 is a utility model patent for a colored light strip using light-emitting diodes as light-emitting elements. The technical solution includes a control signal generating unit and a driving unit. Although the controller of the light string with this structure can control the different light-emitting states of the light-emitting diodes to achieve different color combinations, if the controlled light-emitting diodes form a light string, such as Christmas lights, the output of the side needs to use two-way three-wire wiring. The disadvantage of using this wiring method is that many wires are used and the cost is high. Those skilled in the art have been eager to use the two-way and two-wire method to realize the combination of different light-emitting states of the light-emitting diodes to realize the color-changing function. For example, the patent No. CN200520016685. A utility model patent for a two-wire two-way light string of a single two-color LED bulb.

Utility model content

The purpose of the utility model is to provide a two-wire and two-way light string controller which can make the two-way two-way light strings of the two-way two-wire connection realize alternate lighting or simultaneous lighting. The utility model comprises a control signal generating unit and a driving unit, the control signal generating unit and the driving unit are powered by a power supply circuit; the control signal generating unit alternately or simultaneously provides driving signals to at least one group of driving units.

As an improved embodiment of the present invention, a matching resistor is connected in series between the output end of the drive unit and the light string.

As a preferred technical solution of the present utility model, the control signal generation unit is a dedicated integrated block, and the control signals output by its output terminals L1 and L3 are the same, and the control signals output by L2 and L4 are also the same; L5 and N3 pin is the power input terminal; N0 and N1 pins are connected in series with resistor 6 to provide the clock signal inside the dedicated integrated block 11; one end of the adjustable resistor is connected to L6 pin, the other end is connected to N6 pin, and there is a gap between N6 pin and N4 pin A capacitor is connected in series.

As two preferred technical solutions of the present utility model, the drive unit 2 is an NPN transistor, its base is connected to the L2 and/or L4 pins, and its emitter is connected in series with the control terminal of the bidirectional thyristor. connection, the input end of the bidirectional thyristor is connected to the N4 pin of the integrated block, and the output end is connected in series with the diode set in the forward direction and then connected to the light string; the drive unit is an NPN type triode, and its base is connected to the L1 And/or L3 pin connection, the emitter is connected to the control terminal of the bidirectional thyristor after the resistor is connected in series, the input terminal of the bidirectional thyristor is connected to the N4 pin of the integrated block, and its output terminal is connected in series with reverse bias The diodes are connected to the light string; the integrated electrodes of the drive unit 2 and 3 triode are connected to the L5 pin after being connected in series with a resistor 8; the other end of the light string is connected to the N2 pin after being connected in series with a resistor.

As three preferred technical solutions of the present utility model, the capacitors in the power supply circuit 4 are connected in parallel with resistors to form a filter step-down circuit, and its input terminal is connected with an external circuit, and its output terminal is connected in series with the forwardly arranged The diode is then connected to the L5 pin of the integrated block; a reverse-biased diode is connected in series between the filter step-down circuit of the power supply circuit 4 and the diode connected to it, and the other end of the diode is connected to the N4 pin of the integrated block .

The control signal generation unit of the utility model can make at least one group of drive units work alternately or simultaneously, so that the two-wire and two-way lamp strings can be made to emit light alternately or at the same time; it can not only realize the color changing function but also save the circuit wires. .

Description of drawings

Fig. 1 is a circuit diagram of the first specific embodiment of the utility model.

Fig. 2 is a circuit diagram of the second specific embodiment of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The two-wire two-way light string controller shown in Figure 1 is used as a dedicated integrated block 11 of the control signal generating unit 1, and the N0 and N1 pins are connected in series with a resistor 6 to provide a clock signal inside the dedicated integrated block 11, so that the L1, L3 pins and L2 , L4 pins alternately output control signals; one end of the adjustable resistor 7 is connected to the L6 pin, and the other end is connected to the N6 pin, and a capacitor is connected in series between the N6 pin and the N4 pin to adjust the resistance value of the adjustable resistor 7 , the oscillation frequency inside the integrated block 11 can be changed accordingly, and the frequency of signal changes between L1, L3 pins and L2, L4 pins can be changed. If the output frequency is adjusted faster, the L1, L3 pins and L2 , The L4 pin can output signals at the same time in a certain period of time to achieve the purpose of emitting light at the same time.

The drive unit 2 in the figure is an NPN triode, its base is connected to the L2 and L4 pins, its emitter is connected to the control terminal of the bidirectional thyristor after a resistor is connected in series, and the input terminal of the bidirectional thyristor is connected to the integrated block The N4 pin is connected to the N4 pin, and the output terminal is connected in series with the diode set in the forward direction and then connected to the light string; the drive unit 3 is an NPN transistor, the base is connected to the L1 and L3 pins, and the emitter is connected to the resistor in series. After that, it is connected with the control terminal of the bidirectional thyristor, the input terminal of the bidirectional thyristor is connected with the N4 pin of the integrated block, and its output terminal is connected with a reverse biased diode in series and then connected with the light string.

When the L1 and L3 pins output the control signal, the drive unit 2 can make a group of light strings emit light; when the L2 and L4 pins output the control signal, the drive unit 3 can make the other group of light strings glow. When adjusting the variable resistor 7. When the L1, L3 pins and L2, L4 pins output control signals at the same time, the drive unit 2 and the drive unit 3 can work simultaneously in a certain period of time.

The capacitor in the power supply circuit 4 in the figure is connected in parallel with a resistor to form a filter step-down circuit, and its input terminal is connected to an external circuit, and its output terminal is connected in parallel and then connected in series with a diode set in the forward direction, resistor 8, and then connected to the integrated block The L5 pin of the power supply circuit 4 is connected to the L5 pin; a reverse biased diode is also connected in series between the filter step-down circuit of the power supply circuit 4 and the diode connected to it, and the other end of the diode is connected to the N4 pin of the integrated block.

The L5 pin of the integrated block is connected with the triode collectors of the drive units 2 and 3 after being connected in series with a resistor 8 . The other end of the light string is connected to the N2 pin after being connected in series with a resistor.

In order to make the voltages of the two sets of light strings parallel when working at the same time, a matching resistor 5 can be connected.

Fig. 2 shows a two-wire two-way light string controller, and its matching resistor 5 can also be connected to the light string.

Claims (5)

1. A two-wire two-circuit light string controller, comprising a control signal generation unit (1) and a drive unit, characterized in that: the control signal generation unit (1) and the drive unit are powered by a power supply circuit (4); the control signal generation The unit (1) supplies driving signals alternately or simultaneously to at least one group of driving units (2, 3). 2. The two-wire two-circuit light string controller according to claim 1, characterized in that: a matching resistor (5) is connected in series between the output terminals of the drive unit (2, 3) and the light string. 3. The two-wire two-circuit light string controller according to claim 1, characterized in that: the The control signal generating unit (1) described above is a dedicated integrated block (11), and its output terminals L1, The control signals output by pin L3 are the same, and the control signals output by pins L2 and L4 are also the same; L5 and N3 pins are power supply input terminals; N0 and N1 pins are connected in series with resistors (6) to provide clock signals inside the special integrated block (11); one end of adjustable resistor (7) is connected with L6 pins, and the other end is connected with N6 pins There is also a capacitor connected in series between the N6 pin and the N4 pin. 4. The two-wire two-circuit light string controller according to claim 1, characterized in that: the The drive unit (2) described above is an NPN transistor, its base is connected to the L2 and/or L4 pins, its emitter is connected to the control terminal of the bidirectional thyristor after the resistor is connected in series, and the input terminal of the bidirectional thyristor is connected to the The N4 pins of the integrated block are connected, and the output end is connected in series with the forward diode and then connected to the light string; the drive unit (3) is an NPN triode, and its base is connected to the L1 and/or L3 pins, The emitter is connected in series with the control terminal of the bidirectional thyristor, the input terminal of the bidirectional thyristor is connected with the N4 pin of the integrated block, and the output terminal is connected in series with a reverse biased diode and then connected to the light string connected; the collectors of the triodes of the driving units (2, 3) are connected in series with the resistor (8) and then connected to the L5 pin; the other end of the light string is connected in series with the N2 pin after the resistor is connected in series. 5. The two-wire two-circuit light string controller according to claim 1, characterized in that: the capacitor in the power supply circuit (4) is connected in parallel with a resistor to form a filter and step-down circuit, and its input terminal is connected to an external circuit, and its After the output terminal is connected in parallel, the forwardly arranged diode is connected in series and then connected to the L5 pin of the integrated block; a reverse biased diode is also connected in series between the filter step-down circuit of the power supply circuit (4) and the diode connected thereto, The other end of this diode is connected to the N4 pin of the integrated block.

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