KR20170126774A - LED lamp drive control apparatus and the control method - Google Patents

Abstract

The present invention relates to a light emitting diode (LED) lamp driving control device which senses an input power in which an LED lamp is dimly turned on and an afterimage remains by voltage charged in a condenser of an LED driving unit (LED power circuit) when the LED lamp having a ripple removing unit is turned off, and controls an operation power of a ripple removing circuit to quickly remove the afterimage, and to more quickly turn on a lamp, and to a control method thereof. According to the LED lamp driving control device using a ripple removing unit to prevent the LED lamp from being turned on by a charging voltage of a condenser when the LED lamp is turned off, a first resistor and a seventh condenser are connected in series between output terminals of a rectifying unit for rectifying voltage received from an input unit of a commercial power. Also, a third resistor and an end of a first zener diode connected in series are connected to an intermediate point of the first resistor and the seventh condenser, and the third resistor and the other end of the first zener diode connected in series are connected to one input terminal of a photocoupler. In addition, a fourth resistor and one end of a second zener diode connected in series are connected to one end of the LED lamp, one output terminal of the photocoupler is connected to the fourth resistor and the other end of the second zener diode connected in series, and the other output terminal of the photocoupler is connected to an operation power end of the ripple removing unit. Furthermore, an output terminal of the ripple removing unit is connected to the other end of the LED lamp.

Description

[0001] The present invention relates to an LED lamp drive control apparatus and a control method thereof,

In the present invention, when an LED (light emitting diode) lamp having a ripple removing portion is turned off, the LED lamp is faintly lit due to the voltage charged in the capacitor of the LED driving portion (LED power supply circuit) The present invention relates to an LED lamp drive control device and a control method thereof, which can quickly remove a residual image by controlling an operation power source of a ripple removal circuit by detecting an input power source,

Generally, a power supply circuit of a light emitting diode is mainly used to transmit a power to a LED lamp of a secondary side of a transformer through a transformer after performing a pulse width modulation (PWM) control on a rectified voltage. Here, in order to protect the LED lamp or to stabilize the voltage input to the LED lamp, a capacitor is used at the input side and the output side of the transformer. However, in order to realize a high power factor, a ripple voltage is largely generated because a smoothing electrolytic capacitor is not used on the primary input side, and a flicker phenomenon of a light emitting diode is caused by a ripple current generated by a ripple voltage. The flicker phenomenon not only affects the lifetime and the light efficiency of the LED, but also causes the user's eyes to easily become fatigued.

Therefore, a ripple removing circuit (ripple removing circuit) is used to remove the ripple. In general, a ripple removing circuit is known, and a ripple removing element made of a single chip is also commercially available. Thus, much attention has been given to removing the ripple by using the ripple removing circuit while the LED lamp is on.

Also, when the LED lamp is turned off, the voltage charged in the capacitor on the input side or the output side of the transformer causes a residual image in which the LED lamp is faintly lit for a long time, and this also affects the lifetime and the light efficiency of the LED But also causes the user's eyes to easily become fatigued. Conventionally, discharge is performed using a discharge resistor for this purpose. As a result, lighting is slowed by discharging the capacitor due to discharge resistance.

As described above, various methods for dimming the LED lamp by the voltage charged in the capacitor at the time of turning off the LED lamp have been discussed, but there are few methods to reliably eliminate such a problem.

Therefore, in the present invention, an afterimage remains dimly lit for a long time due to the voltage charged in the capacitor when the LED lamp is turned off, thereby detecting the input power source and controlling the operation power of the ripple removal circuit to quickly remove the afterimage And an LED lamp driving control device and a control method thereof that can quickly turn on when the lamp is turned on.

In the prior art, Korean Patent No. 10-1423966 relates to a ripple removing device for a light emitting diode power supply circuit.

FIG. 1 is an equivalent circuit diagram of a driver IC in a ripple removing device of the Korean Patent No. 10-1423966. The detection value (input value of the feedback input terminal) is rectified through a regulator, (Input terminal of the reference stage) is input to another input terminal (reference terminal) of the operational amplifier, and the operational amplifier compares the detected value with the reference signal, Thus, the transistor causes the ripple removal device to conduct or disconnect the LED connection terminal connected to the LED lamp.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an LED driving device and a method of driving the LED driving device, in which when an LED lamp having a ripple removing part is turned off, And an object thereof is to provide an LED lamp drive control device and a control method therefor which are capable of quickly eliminating a residual image by controlling the operation power of a ripple removing circuit by detecting a power supply,

In order to solve the above-described problems, the first embodiment of the present invention is an LED lamp drive control apparatus using a ripple removing unit to prevent the LED lamp from lighting by the charging voltage of the capacitor when the LED lamp is turned off, A first resistor and a seventh capacitor are connected in series between the output terminal of the rectifying section for rectifying the voltage received from the power input section and a third resistor connected in series to the midpoint between the first resistor and the seventh capacitor, A third resistor connected in series and the other end of the first Zener diode are connected to a first input terminal of the photocoupler and a fourth resistor connected in series and a first end of the LED lamp are connected to one end of the second Zener diode, One output end of the photocoupler is connected to the other end of the fourth resistor and the second zener diode connected in series, and the other output end of the photocoupler is connected to the operation power supply And the output terminal of the ripple removing unit is connected to the other end of the LED lamp.

The second embodiment of the present invention is an LED lamp drive control apparatus using a ripple removing unit to prevent the LED lamp from being turned on by the charging voltage of the capacitor when the LED lamp is turned off, The first resistor and the seventh capacitor are connected in series between the output ends of the rectifying part to be rectified, and one end of the first zener diode is connected to the third resistor connected in series at the midpoint between the first resistor and the seventh capacitor , The third resistor connected in series and the other end of the first Zener diode are connected to the base of the first npn transistor, the collector of the first npn transistor is connected to the base of the second pnp transistor through a fifth resistor, The emitter is connected to the ground, and one end of the LED lamp is connected to one end of the fourth resistor and the second zener diode connected in series, and a fourth resistor and a second zener The other one of odd, the second, and the emitter of the 2pnp transistor connections, a and a collector of 2pnp transistor is connected to the operating power supply terminal of the reject ripple claim, the output terminal of the ripple rejection is characterized in that connected to the other end of the LED lamp.

When the voltage charged in the seventh capacitor becomes larger than the breakdown voltage of the first Zener diode, the power is applied to the operation power terminal of the ripple removing unit, .

When the power switch of the LED lamp drive control device is turned off and the voltage charged in the seventh capacitor becomes lower than the breakdown voltage of the first Zener diode, the operation of the ripple removal is stopped.

A twelfth resistor is further connected between the third resistor connected in series and the other end of the first Zener diode and the ground.

One end of the LED lamp is connected to the + end of the third capacitor, and the end of the third capacitor is connected to the ground of the ripple removing unit.

One end of the first inductor is mounted on the + end of the third capacitor, one end of the second inductor is mounted on the - end of the third capacitor, and the other end of the second inductor is connected between the other end of the first inductor and the other end of the second inductor. Capacitors can be mounted.

And a second condenser may be mounted in parallel with the third condenser.

In the commercial power input unit, a varistor and a commercial power input unit capacitor are connected in parallel between a + side connection terminal and a minus side connection terminal, which are in contact with the socket, and both ends of the commercial power input unit capacitor are respectively mounted with inductors, Lt; / RTI >

A third embodiment of the present invention is directed to an LED lamp drive control device having an LED voltage control circuit for detecting an input voltage in order to prevent the LED lamp from being turned on by the charging voltage of the capacitor when the LED lamp is turned off, The output terminal of the rectifying section for rectifying the voltage received from the commercial power input section includes a first resistor and a seventh capacitor connected in series, a third resistor connected in series to the midpoint between the first resistor and the seventh capacitor, And the other end of the first resistor and the first zener diode are connected to one input terminal of the photocoupler, one output terminal of the photocoupler is connected to the base of the first transistor, One end of a fifth resistor is connected to the collector, a second Zener diode connected in series to the other end of the fifth resistor is connected to one end of a fourth resistor, and a second Zener diode And the other end of the fourth resistor is connected to the base of the first transistor, a sixth resistor is connected between the base and the emitter of the first transistor, and the other end of the fifth resistor and the emitter of the first transistor And a second capacitor is mounted between the first capacitor and the second capacitor.

A fourth embodiment of the present invention is directed to an LED lamp drive control device having an LED voltage control circuit for detecting an input voltage in order to prevent the LED lamp from being turned on by the charging voltage of the capacitor when the LED lamp is turned off, The output terminal of the rectifying section for rectifying the voltage received from the commercial power input section includes a first resistor and a seventh capacitor connected in series, a third resistor connected in series to the midpoint between the first resistor and the seventh capacitor, A third resistor connected in series and the other end of the first Zener diode are connected to the base of the second transistor, the collector of the second transistor is connected to the base of the first transistor, The emitter is connected to the ground, one end of the fifth resistor is connected to the collector of the first transistor, the second zener diode connected in series to the other end of the fifth resistor, And the other end of the fourth resistor is connected to the base of the first transistor, a sixth resistor is connected between the base and the emitter of the first transistor, and the other end of the fifth resistor And a second capacitor is mounted between the one end and the emitter of the first transistor.

One end of the second capacitor is connected to one end of the first capacitor and the other end of the second capacitor is connected to the other end of the second inductor and the other end of the second inductor is connected to the other end of the second inductor, A third capacitor is connected, and an LED lamp is connected between the positive end of the third capacitor and the negative end of the third capacitor.

 The fifth resistor may have two resistors connected in parallel, and a twelfth resistor is connected between the third resistor connected in series and the other one of the first zener diodes and the ground.

When the voltage charged in the seventh capacitor becomes lower than the breakdown voltage of the first Zener diode, the voltage between both ends of the second Zener diode, the base of the first transistor and the emitter of the first transistor So that the discharge is performed by a voltage equal to the value obtained by adding the voltage between the electrodes.

And an LED lamp may be mounted in parallel with the second capacitor.

In the LED lamp drive control device and the control method thereof according to the present invention, when the LED lamp having the ripple removing portion is turned off, the LED lamp is faintly lit due to the voltage charged in the capacitor of the LED driving portion (LED power supply circuit) By detecting the remaining input power and controlling the operation power of the ripple removing circuit, it is possible to quickly remove the afterimage, and to light faster than when the lamp is turned on. This prolongs the lifetime of the light emitting diode and makes the user's eyes less fatigued.

The present invention solves the problem that the operation is not controlled by the ripple removing circuit and the afterimage is left when the lamp is turned off and the capacitor discharged by the discharge resistor is charged.

1 is an equivalent circuit diagram of a driver IC in a ripple removing device of Korean Patent No. 10-1423966.
Fig. 2 shows an LED lamp drive control apparatus using a ripple removing unit according to the first embodiment of the present invention.
Fig. 3 shows an LED lamp drive control apparatus using a ripple removing unit according to the second embodiment of the present invention.
4 is an example of a commercial power input unit located at the front end of the rectifying unit.
Fig. 5 is an overall configuration diagram of an LED lamp drive control device using the ripple removing unit of Fig. 2. Fig.
6 shows a third embodiment of the present invention, which shows an LED voltage control circuit for input voltage sensing.
7 shows another LED voltage control circuit for input voltage sensing according to a fourth embodiment of the present invention.
8 is an overall configuration diagram of an LED lamp drive control device having an LED voltage control circuit for detecting the input voltage of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an LED lamp drive control apparatus and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 shows an LED lamp drive control apparatus using a ripple removal circuit (a ripple removal circuit) in order to prevent the LED lamp from being turned on by the charging voltage of the capacitor when the LED lamp is turned off, according to the first embodiment of the present invention . 2 illustrates a case where the rectifier power supply 100 and the LED driver 200 are isolated (isolated) using a photocoupler.

The rectifying part 110 rectifies the voltage received from the commercial power input part 50 (that is, the voltage received through the rectifying part terminals 1 and 2), and the output V1 of the rectifying part 110 is connected to the rectifying part through the resistors R1 and R2 The capacitor C7 is charged.

When the power is turned on, the rectified voltage is charged to the capacitor C7 through the resistors R1 and R2 via the bridge diode BD1. At this time, when the voltage charged in the capacitor C7 becomes larger than the breakdown voltage of the zener diode ZD1, the zener diode ZD1 conducts and a current flows through the resistor R3, and thus a current flows into the light emitting diode inside the photocoupler PC1 , The phototransistor inside the photocoupler PC1 turns on, that is, conducts. Then, power is applied to the operating power supply terminal (VCC) of the ripple removal unit 150 to drive the ripple removal unit 150, and as a result, the ripple current flowing through the LED lamp 170 is removed to eliminate flickering. Here, the resistors R1 and R2 can be referred to as a first resistor.

Conversely, when the power is turned off, the voltage charged in the capacitor C7 becomes lower than the breakdown voltage of the zener diode ZD1, so that the zener diode ZD1 becomes unconnected, and no current flows through the resistor R3, , No current flows through the internal light emitting diode of the photocoupler PC1 and the phototransistor inside the photocoupler PC1 is turned off. Therefore, power is not applied to the operating power supply terminal (VCC) of the ripple removal unit 150 through the photocoupler PC1, so that the operation of the ripple removal unit 150 is stopped and the ripple removal unit 150 150 are consequently turned off, and the voltage charged in the capacitors C2, C3 connected to both ends (i.e., the input side and the output side) of the line filter LF2 made of the inductor is blocked from flowing current to the LEDs.

Thus, the voltage charged in the capacitors C2 and C3 is controlled.

The line filter LF2 is composed of two inductors, one inductor is mounted between the plus side of the capacitor C2 and the plus side of the capacitor C3, and the negative side of the capacitor C2 And another inductor is mounted between the negative side of the capacitor C3 and the negative side of the capacitor C3. In other words, one end of a different inductor is mounted at each end of the capacitor C2, and the other end of each of the inductors is mounted at the input end of the rectifying part.

The line filter is an electromagnetic noise removing filter. In some cases, the line filter LF2 may be omitted, and the capacitors C2 and C3 may be connected in parallel.

In FIG. 2, when the LED lamp is turned off, there is a residual image in which the LED lamp is dimly lit due to the voltage charged in the capacitor of the LED driving unit (LED power supply circuit), so that the input power is detected to control the operation power of the ripple removing circuit It is possible not only to quickly remove the afterimage, but also to facilitate quick lighting upon lighting.

Fig. 3 is a circuit diagram showing another LED lamp driving control device using a ripple removing circuit (a ripple removing circuit) in order to prevent the LED lamp from being turned on by the charging voltage of the capacitor when the LED lamp is turned off . 3 shows a case in which the rectifying power supply unit and the LED driving unit are not isolated.

When the power is turned on, the rectified voltage is charged to the capacitor C7 through the resistors R1 and R2 via the bridge diode BD1. At this time, when the voltage charged in the capacitor C7 becomes larger than the breakdown voltage of the zener diode ZD1, the zener diode ZD1 is turned on and a current flows through the resistor R3, and a current flows through the base of the transistor Q2, Is turned ON, that is, conducted. The collector end of the transistor Q2 is connected to the base of the transistor Q1 via a resistor R5. When the transistor Q2 is turned on, a current flows through the base of the transistor Q1, turning on the transistor Q1, that is, continuity. Then, power is applied to the operating power supply terminal (VCC) of the ripple removing unit 150 to drive the ripple removing unit 150, and as a result, the ripple current flowing in the LED lamp is removed to eliminate flickering.

Conversely, when the power supply is turned off, the voltage charged in the capacitor C7 becomes lower than the breakdown voltage of the zener diode ZD1, so that the zener diode ZD1 becomes unconnected and no current flows through the resistor R3, A current does not flow through the base of the transistor Q1 so that the transistor Q2 is turned off or turned off and thus the transistor Q2 is turned off so that no current flows through the base of the transistor Q1, (Q1) is turned off (turned off). Accordingly, power is not applied to the operating power supply terminal (VCC) of the ripple removal unit 150 through the transistor Q1, and the operation is stopped. Therefore, the operation of the ripple removing unit 150 is stopped and the ripple removing unit 150 is consequently turned into a non-charged state, so that the voltage charged in the capacitors C2 and C3 connected to both ends of the line filter LF2 made of the inductor Current is blocked by the LED.

Thus, the voltage charged in the capacitors C2 and C3 is controlled. The capacitors C2 and C3 are partly charged when the power is turned ON again, so that the delays due to the charging of the capacitors C2 and C3 can be eliminated, and it is possible to facilitate the quick lighting upon re-lighting.

4 is an example of a commercial power input unit located at the front end of the rectifying unit 110. [

4, the commercial power input unit 50 positioned at the front end of the rectifying unit 110 in the first and second embodiments includes a plurality of connection terminals in contact with a socket (not shown), that is, a + A commercial power source (for example, 220V) is input from the side connection terminals L and L and the minus side connection terminals N and N via the fuse F1 and the + side connection terminals L and L, The varistor VA1 and the commercial power input unit capacitor CX1 are mounted between the power supply input unit C and the commercial power input unit capacitor CX1 between the terminals N and N, Is connected to the rectifying part (110). Here, the different inductors form the line filter LF1. That is, a line filter LF1 is provided between the rectifying unit 110 and both ends of the commercial power input unit capacitor CX1.

Fig. 5 is an overall configuration diagram of an LED lamp drive control device using the ripple removing unit of Fig. 2. Fig. 5 is an overall circuit diagram of an LED lamp drive control device including a ripple removing unit when the rectifier power supply unit and the LED drive unit are isolated (isolated) using a photocoupler.

The LED lamp drive control device of FIG. 5 includes the commercial power input unit of FIG. 4 and includes the LED drive unit 200 of FIG.

The commercial power input unit 50 decompresses the power supply signal received from the commercial power supply (for example, 220 V) to generate a power supply signal for driving the LED.

The rectifying unit 110 rectifies the power signal received from the commercial power input unit 50 and transmits the rectified power signal to the LED driving unit 200 and the PWM switching unit 400.

The PWM switching unit 400 provides a pulse width modulation (PWM) signal from the power supply signal to the LED lamp using a PWM driving unit formed of a dedicated driving IC. A dedicated drive IC (PWM-IC) or LED drive IC for pulse width modulation control can be used as the PWM driver in the PWM driver.

The LED driving unit 200 drives the LED 170 by the PWM switching unit 400 and the ripple removing unit 150 drives the LED 170 by turning on the power, When the power supply is turned off, the two inductors forming the line filter LF2 are turned on when the voltage charged in the capacitors C2 and C3 connected to both ends of the inductor LF2 flows to the LEDs It blocks things.

In Fig. 5, A, B, and C are points connecting to each other.

6 shows a third embodiment of the present invention, which shows an LED voltage control circuit for input voltage sensing. 6 illustrates a case where the rectifier power supply 100 and the LED driver 200 are isolated (isolated) using a photocoupler.

When the power is turned on, the rectified voltage is charged to the capacitor C7 through the resistors R1 and R2 via the bridge diode BD1. At this time, when the voltage charged in the capacitor C7 becomes larger than the breakdown voltage of the zener diode ZD1, the zener diode ZD1 conducts and a current flows through the resistor R3, and thus a current flows into the light emitting diode inside the photocoupler PC1 , The phototransistor inside the photocoupler PC1 turns on, that is, conducts. Then, the emitter and the base of the transistor (Q1 in FIG. 6) are short-circuited so that the voltage between the emitter and the base of the transistor Q1 becomes close to 0V and the transistor Q1 is turned off.

Conversely, when the power is turned off, the voltage charged in the capacitor C7 becomes lower than the breakdown voltage of the zener diode ZD1, so that the zener diode ZD1 becomes unconnected, and no current flows through the resistor R3, , No current flows through the internal light emitting diode of the photocoupler PC1 and the phototransistor inside the photocoupler PC1 is turned off. Then, a resistor R6 is applied between the base and the emitter of the transistor Q1. The voltage charged in the capacitors C2 and C3 is applied to the resistors R5 and R51 and the transistor Q1 by a value obtained by dividing the voltage across the LED by the frequency provided to the LED (LED V / F) (ON). As a result, a current flows to discharge the voltage between both ends of the Zener diode ZD2 and the base of the transistor Q1 plus the emitter voltage VBE. Thus, the capacitor C2 and C3 are controlled to discharge the charged voltage.

The capacitors C2 and C3 are partly charged when the power is turned ON again, so that the delays due to the charging of the capacitors C2 and C3 can be eliminated, and it is possible to facilitate the quick lighting upon re-lighting.

That is, when the power supply is turned on, the transistor Q1 is turned off to have no effect on the circuit of FIG. 6, but when the power supply is turned off, the transistor Q1 is turned on to charge the capacitors C2 and C3 Thereby discharging the discharged voltage.

Particularly, in the third embodiment, in the absence of the forced voltage control circuit, there is a residual image that remains on for a long time due to the voltage charged in the capacitor when the LED lamp 170 is turned off, By controlling the charging voltage, it is possible to remove the afterimage as quickly as possible, as well as to make it possible to light up quickly at the time of lighting.

7 shows another LED voltage control circuit for input voltage sensing according to a fourth embodiment of the present invention. 7 shows a case in which the rectifying power supply unit and the LED driving unit are not isolated.

When the power is turned on, the rectified voltage is charged to the capacitor C7 through the resistors R1 and R2 via the bridge diode BD1. At this time, when the voltage charged in the capacitor C7 becomes larger than the breakdown voltage of the zener diode ZD1, the zener diode ZD1 is turned on and a current flows through the resistor R3, and a current flows through the base of the transistor Q2, Is turned ON, that is, conducted. The collector end of the transistor Q2 is connected to the base of the transistor Q1. When the transistor Q2 is turned on, the base and the emitter of the transistor Q1 are short-circuited, and the voltage between the emitter and the base of the transistor Q1 becomes close to 0 V, (OFF).

Conversely, when the power supply is turned off, the voltage charged in the capacitor C7 becomes lower than the breakdown voltage of the zener diode ZD1, so that the zener diode ZD1 becomes unconnected and no current flows through the resistor R3, A current does not flow through the base of the transistor Q2 and the transistor Q2 is turned off or turned off and a resistor R6 is applied between the base and the emitter of the transistor Q1. The voltage charged in the capacitors C2 and C3 is applied to the resistors R5 and R51 and the transistor Q1 by a value obtained by dividing the voltage across the LED by the frequency provided to the LED (LED V / F) (ON). As a result, a current flows to discharge the voltage between both ends of the Zener diode ZD2 and the base of the transistor Q1 plus the emitter voltage VBE. Thus, the capacitor C2 and C3 are controlled to discharge the charged voltage.

The capacitors C2 and C3 are partly charged when the power is turned ON again, so that the delays due to the charging of the capacitors C2 and C3 can be eliminated, and it is possible to facilitate the quick lighting upon re-lighting.

Also in the embodiment 4, when there is no forced voltage control circuit, there is a residual image that remains on for a long time due to the voltage charged in the capacitor when the LED lamp 170 is turned off. So that the afterimage can be quickly removed and the lighting can be facilitated at the time of lighting.

8 is an overall configuration diagram of an LED lamp drive control device having an LED voltage control circuit for detecting the input voltage of FIG. 8 shows an overall circuit diagram of an LED lamp drive control device having an LED voltage control circuit when the rectifier power supply unit and the LED drive unit are isolated (isolated) using a photocoupler.

The LED lamp drive control device of Fig. 8 includes the commercial power input unit of Fig. 4 and the LED driver 200 of Fig. The LED lamp drive control apparatus of Fig. 8 is the same as that of Fig. 5 except that the LED lamp drive unit 200 of Fig. 6 is provided. That is, the commercial power input unit 50, the rectifying unit 110, and the PWM switching unit 400 are the same as those in FIG.

In Fig. 8, A, B, and C are points connecting to each other.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, it is intended that the scope of the invention be defined by the claims appended hereto, and that all equivalent or equivalent variations thereof fall within the scope of the present invention.

50: commercial power input unit 100: rectifying power unit
110: rectifying part (110) 150: ripple removing part
170: LED lamp 200: LED driving part

Claims (17)

An LED lamp drive control device using a ripple removing unit to prevent an LED lamp from being turned on by a charging voltage of a capacitor when the LED lamp is turned off,
A first resistor and a seventh capacitor are connected in series between the output terminal of the rectifying section for rectifying the voltage received from the commercial power input section,
A third resistor connected in series and a first end of the first Zener diode are connected at a midpoint between the first resistor and the seventh capacitor and the other end of the first Zener diode is connected to the other end of the first input of the photocoupler, Lt; / RTI >
One end of the LED lamp is connected to one end of the fourth resistor and the second Zener diode connected in series, one output end of the photocoupler is connected to the other end of the fourth resistor and the second Zener diode connected in series, The output end is connected to the operating power end of the ripple removal,
Wherein an output terminal of the ripple removal unit is connected to the other end of the LED lamp. An LED lamp drive control device using a ripple removing unit to prevent an LED lamp from being turned on by a charging voltage of a capacitor when the LED lamp is turned off,
A first resistor and a seventh capacitor are connected in series between the output terminal of the rectifying section for rectifying the voltage received from the commercial power input section,
A third resistor connected in series and one end of the first Zener diode are connected at a midpoint between the first resistor and the seventh capacitor and the other end of the first Zener diode and the third resistor connected in series are connected to the base of the first npn transistor The collector of the first npn transistor is connected to the base of the second pnp transistor through a fifth resistor, the emitter of the first npn transistor is connected to ground,
One end of the LED lamp is connected to one end of the fourth resistor and the second zener diode connected in series and the emitter of the second pnp transistor is connected to the other end of the fourth resistor and the second zener diode connected in series, Is connected to the operating power terminal of the ripple removing unit,
Wherein an output terminal of the ripple removal unit is connected to the other end of the LED lamp. 3. The method according to any one of claims 1 to 3,
When the voltage charged in the seventh capacitor becomes larger than the breakdown voltage of the first Zener diode, the power is applied to the operation power terminal of the ripple removing unit, And the driving of the LED lamp is controlled based on the detection result. The method of claim 3,
The operation of the ripple removal is stopped when the power switch of the LED lamp drive control device is turned off and the voltage charged in the seventh capacitor becomes lower than the breakdown voltage of the first Zener diode. And an LED lamp driving control unit using the removing unit. 3. The method according to any one of claims 1 to 3,
And a twelfth resistor is further connected between the third resistor connected in series and the other end of the first Zener diode and the ground. 3. The method according to any one of claims 1 to 3,
Characterized in that one end of the LED lamp is connected to the + end of the third capacitor, and the end of the third capacitor is connected to the ground of the ripple removing unit. The method according to claim 6,
One end of the first inductor is mounted on the + end of the third capacitor, one end of the second inductor is mounted on the - end of the third capacitor,
Wherein the second capacitor is mounted between the other end of the first inductor and the other end of the second inductor. The method according to claim 6,
And the second condenser is mounted in parallel with the third condenser. The power supply unit according to any one of claims 1 to 3,
A varistor and a commercial power input unit capacitor are connected in parallel between the positive and negative connection terminals in contact with the socket and both ends of the commercial power input unit capacitor are respectively connected to an inductor and the inductor is connected to a rectifying unit , And a ripple eliminating unit is used. An LED lamp drive control device having an LED voltage control circuit for detecting an input voltage to prevent an LED lamp from being turned on by a charging voltage of a capacitor when the LED lamp is turned off,
The output terminal of the rectifying section for rectifying the voltage received from the commercial power input section is connected in series with a first resistor and a seventh capacitor,
A third resistor connected in series and a first end of the first Zener diode are connected to a midpoint between the first resistor and the seventh capacitor and the other end of the first Zener diode is connected to the other end of the first input of the photocoupler, Lt; / RTI >
One end of the fifth resistor is connected to the collector of the first transistor, one end of the fourth resistor is connected to the other end of the fifth resistor in series and the other end of the fourth resistor is connected to the other end of the fifth resistor, And the other end of the fourth resistor is connected to the base of the first transistor and a sixth resistor is connected between the base and the emitter of the first transistor,
And an LED voltage control circuit for detecting an input voltage, characterized in that a second capacitor is mounted between the other end of the fifth resistor and the emitter of the first transistor. An LED lamp drive control device having an LED voltage control circuit for detecting an input voltage to prevent an LED lamp from being turned on by a charging voltage of a capacitor when the LED lamp is turned off,
The output terminal of the rectifying section for rectifying the voltage received from the commercial power input section is connected in series with a first resistor and a seventh capacitor,
A third resistor connected in series and a first end of the first Zener diode are connected at a midpoint between the first resistor and the seventh capacitor and the other end of the first Zener diode is connected to the base of the second transistor, A collector of the second transistor is connected to the base of the first transistor, an emitter of the second transistor is connected to the ground,
The other end of the fifth resistor is connected to the collector of the first transistor, and the other end of the fifth resistor is connected to the other end of the fourth resistor in series. The second Zener diode and the fourth resistor Another end of the first transistor is connected to the base of the first transistor, a sixth resistor is connected between the base and the emitter of the first transistor,
And an LED voltage control circuit for detecting an input voltage, characterized in that a second capacitor is mounted between the other end of the fifth resistor and the emitter of the first transistor. 12. The method according to any one of claims 10 to 11,
One end of the second inductor is connected to one end of the second capacitor, the other end of the second capacitor is connected to one end of the second inductor,
Characterized in that a third capacitor is connected between the other end of the first inductor and the other end of the second inductor and an LED lamp is connected between the end of the third capacitor and the end of the third capacitor. An LED lamp drive control device comprising an LED voltage control circuit for detecting an input voltage. 12. The method according to any one of claims 10 to 11,
And the fifth resistor is composed of two resistors connected in parallel. An LED lamp drive control device comprising an LED voltage control circuit for detecting an input voltage. 12. The method according to any one of claims 10 to 11,
And a twelfth resistor is further connected between a third resistor connected in series and the other terminal of the first Zener diode and the ground, and an LED voltage control circuit for detecting an input voltage. 12. The method according to any one of claims 10 to 11,
When the voltage charged in the seventh capacitor becomes lower than the breakdown voltage of the first Zener diode, the voltage between both ends of the second Zener diode, the base of the first transistor and the emitter of the first transistor And an LED voltage control circuit for detecting an input voltage, wherein the LED voltage control circuit is configured to discharge a voltage equal to the voltage obtained by adding the voltage between the electrodes. 12. The method according to any one of claims 10 to 11,
And an LED voltage control circuit for detecting an input voltage is provided in parallel with the second capacitor. 12. The power supply unit according to any one of claims 10 to 11,
A varistor and a commercial power input unit capacitor are connected in parallel between the positive and negative connection terminals in contact with the socket and both ends of the commercial power input unit capacitor are respectively connected to the inductor and the inductors are connected to the rectifying unit And an LED voltage control circuit for detecting an input voltage.

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