KR20080054979A - Electronic ballast stabilizer have wit circuit for detecting input and output breakdown - Google Patents

Abstract

An electronic ballast having a circuit for detecting input and output breakdown is provided to maximize workability and efficiency in a place using a lighting load and not necessarily cut off power in abnormal operation of the electronic ballast. An electronic ballast converts AC commercial power of an input power unit(10) into DC power through a full-wave rectifier(20) and a power factor improving unit(30), forms a square wave of a frequency suitable for a lighting load(60) through an inverter unit(40), and forms power of a sine wave in a resonance unit(50) to turn on the lighting load. The electronic ballast includes an input detecting unit(70) interlocked with the full-wave rectifier. The input detecting unit turns on a display unit(90) to indicate a normal state when input power of the input power unit is in a proper range and turns off the display unit to indicate an abnormal state when the input power of the input power unit is out of the proper range.

Description

ELECTRONIC BALLAST STABILIZER HAVE WIT CIRCUIT FOR DETECTING INPUT AND OUTPUT BREAKDOWN}

1 is a block diagram showing an electronic ballast incorporating an input / output side fault detection circuit according to the present invention.

2 is a circuit diagram including an input detector of an electronic ballast incorporating an input / output side fault detection circuit according to the present invention;

3 is a circuit diagram showing an output detector of an electronic ballast incorporating an input / output side fault detection circuit according to the present invention;

       Explanation of symbols on the main parts of the drawings

10: input power supply unit 20: full-wave rectifier

30: power factor improvement unit 40: inverter unit

50: resonator 60: lighting load

70: input detection unit 70a: input side constant voltage output IC

C1: first capacitor C2: second capacitor

R1: first resistor R2: second resistor

R3: third resistor R4: fourth resistor

R5: fifth resistor ZD1: first zener diode

ZD2: second zener diode 80: output detector

80a: output-side constant voltage output IC C10: tenth capacitor

C20: 20th condenser C30: 30th condenser

D1: first diode L1: primary coil

L2: secondary coil R10: tenth resistor

R20: 20th resistor R30: 30th resistor

R40: 40th resistor R50: 50th resistor

ZD10: 10th Zener Diode ZD20: 20th Zener Diode

90 display unit 91 first LED

92: second LED

The present invention relates to an electronic ballast, and more particularly, to an electronic ballast having an input / output side fault detection circuit which checks whether the electronic ballast is normal for the input side operation and the output side operation. It is about a ballast.

In general, an electronic ballast is a device that supplies stable power to an illumination load such as a fluorescent lamp, an electrodeless lamp, or an HID.

The conventional electronic ballast has a disadvantage in that it is difficult to check the input side operation and the output side (light load side) operation so that the user cannot determine whether the operation is normal.

In other words, when the lighting load is not normally turned on, it is necessary to replace or repair the electronic ballast unconditionally, so that the maintenance is extremely difficult.

The present invention has been made in order to overcome the above problems, the purpose is to maximize the workability and efficiency in the place using the lighting load, even if the abnormality of the electronic ballast does not need to cut off the power unconditionally In addition, the present invention provides an electronic ballast in which an input / output side fault detection circuit can be easily determined by a user.

The present invention for achieving the above object,

Converts AC commercial power from the input power supply into a DC power supply via a full-wave rectifier and a power factor correction part, forms a square wave of frequency suitable for the lighting load while passing through the inverter part, and forms the power of the SINE WAVE in the resonant part to turn on the lighting load. In the electronic ballast

An input detector interlocked with the full-wave rectifier is provided, and when the input power of the input power source is drawn within an appropriate range, the display is turned on as the input detector to indicate that the display device is in a normal state.

When the input power of the input power supply unit is drawn in a size smaller than the normal range, the display unit is turned off as the input detection unit to indicate an abnormal state.

The present invention for achieving the above object,

Converts AC commercial power from the input power supply into a DC power supply via a full-wave rectifier and a power factor correction part, forms a square wave of frequency suitable for the lighting load while passing through the inverter part, and forms the power of the SINE WAVE in the resonant part to turn on the lighting load. In the electronic ballast

An output detector for detecting a current flowing through the illumination load is connected to the resonator so that when the current flows through the illumination load, the display is turned on while detecting and comparing the amount of current to display a normal state.

When the input power is drawn within a suitable range by checking the output state of the lighting load, but the output current flows small, the display unit is turned off to display an abnormal state.

The present invention for achieving the above object,

Converts AC commercial power from the input power supply into a DC power supply via a full-wave rectifier and a power factor correction part, forms a square wave of frequency suitable for the lighting load while passing through the inverter part, and forms the power of the SINE WAVE in the resonant part to turn on the lighting load. In the electronic ballast

An input detector interlocked with the full-wave rectifier is provided, and when the input power of the input power source is drawn within an appropriate range, the display is turned on as the input detector to indicate that the display device is in a normal state.

When the input power of the input power supply unit is drawn in a size smaller than the normal range, the display is turned off as the input detection unit to indicate an abnormal state.

An output detector for detecting a current flowing through the illumination load is connected to the resonator to display a normal state by turning on the display while detecting and comparing the amount of current when the current flows through the illumination load.

When the input power is drawn within a suitable range by checking the output state of the lighting load, but the output current flows small, the display unit is turned off to display an abnormal state.

Hereinafter, a preferred embodiment of an electronic ballast incorporating an input / output side fault detection circuit according to the present invention will be described with reference to the drawings, and a plurality of embodiments of the present invention may exist. The purpose, features and advantages will be better understood.

The present invention is designed to detect the operation of the electronic ballast for the lighting load 60 (fluorescent lamp lamp, electrodeless lamp or HID, etc.) to confirm the normal status.

That is, it is presented to check the normal state of the input side operation and the output side (light load side) operation of the lighting load power supply device, more specifically, the electronic ballast in order to clearly indicate the state of the abnormality.

This design and presentation can maximize the workability and efficiency in the place using the lighting load (60), even if an error in the electronic ballast does not have to cut off the power unconditionally, the user can easily determine whether or not You can judge.

1 is a block diagram showing an electronic ballast incorporating an input / output side fault detection circuit according to the present invention.

The electronic ballast having the input / output side fault detection circuit according to the present invention may be divided into two modes of detection circuit as shown in FIG. 1, that is, the input detector 70 for determining whether the input power supply unit 10 has failed. ) And an output detector 80 for determining whether an output state is abnormal.

Preferably, the electronic ballast having an input / output side fault detection circuit according to the present invention utilizes an AC commercial power source of the input power source unit 10 and forms a DC power source through the full wave rectifying unit 20 and the power factor improving unit 30. In addition, a square wave having a frequency corresponding to the lighting load 60 is again formed via the inverter unit 40, and the power of the SINE WAVE is formed in the resonator unit 50 so that the lighting load 60 may be turned on.

More specifically, the electronic ballast having an input / output side fault detection circuit according to the present invention makes an input detector 70 interlocked with the full-wave rectifying unit 20 to predict the level of the value, and when the input power is drawn within an appropriate range. The first LED 91 of the display unit 90 is turned on through the input detector 70 to indicate that it is in a normal state. In the resonator unit 50, the output detector 80 detects a current flowing through the illumination load 60. When the current flows to the lighting load 60 is made to detect and compare the amount of current to turn on the second LED 92 of the display unit 90 is designed to indicate that the normal state.

On the other hand, when the input power is drawn in a size less than the normal range, the input detection unit 70 is operated to turn off the first LED 91 of the display unit 90 to determine that the abnormal state, furthermore illumination By checking the output state of the load 60, the input power is drawn in the proper range, but when the output current flows small, the second LED 92 of the display unit 90 is turned off so that it can be recognized as an abnormal state.

2 is a circuit diagram including an input detector 70 of an electronic ballast incorporating an input / output side fault detection circuit according to the present invention.

The input detection unit 70 applied to the electronic ballast having the input / output side fault detection circuit according to the present invention has a voltage through the first capacitor C1 connected to both ends of the full-wave rectifying unit 20 to the first resistor R1, The second resistor C2 is smoothed while being distributed to the second resistor R2 and the third resistor R3, and when a voltage of a predetermined level or more is applied, the first zener diode ZD1 is turned on to input constant voltage output IC 70a. After converting to the constant voltage source through the comparison, if the value is normal, the first LED 91 of the display unit 90 is turned on via the fifth resistor R5 to indicate that the input side is in a normal state. .

In addition, when the voltage applied to the fourth resistor R4 is less than or equal to the conduction voltage of the first zener diode ZD1, the first zener diode ZD1 is not conducting and the input side constant voltage output IC 70a is not operated. 1 LED 91 does not light up, indicating that the input side is abnormal.

In addition, when the input side constant voltage output IC 70a is defective, an auxiliary second zener diode ZD2 for maintaining a constant voltage may be further provided.

3 is a circuit diagram showing the output detector 80 side of the electronic ballast incorporating the input / output side fault detection circuit according to the present invention.

In the output detector 80 applied to the electronic ballast having an input / output side fault detection circuit according to the present invention, a voltage is formed through the inverter unit 40, and the tenth capacitor C10, the primary coil L1, and the twentieth When power is applied to the lighting load 60 as a time constant through the condenser C20, a current flows in the primary coil L1, thereby using the induced voltage induced in the secondary coil L2 by using the thirtieth voltage. Charging through the capacitor C30 and voltage distribution through the thirtieth resistor R30 are enabled.

Then, the voltage through the thirtieth resistor R30 is converted into a constant voltage source using the constant voltage output IC 80a of the output side, and the values are compared, and when it is normal, the display unit 90 of the display unit 90 is connected via the 40th resistor R40. The second LED 92 is turned on to indicate that the output side is in a normal state.

The thirty-second capacitor C30 is charged while the half-wave rectified voltage is distributed through the tenth resistor R10 and the twentieth resistor R20 through the first diode D1 connected to the secondary coil L2. In addition, when the voltage across the thirtieth resistor R30 is less than or equal to the conduction voltage of the tenth zener diode ZD10, the output voltage of the constant voltage output IC 80a of the output side is formed by preventing the tenth zener diode ZD10 from conducting. In this case, the second LED 92 of the display unit 90 is turned off and at the same time, it is possible to confirm that the output side is in an abnormal state.

In addition, when the output side constant voltage output IC 80a is defective, it is preferable to further provide an auxiliary twentieth zener diode ZD20 and a current limiting 50th resistor R50 to maintain a constant voltage at all times.

At this time, the blinking of the first LED 91 and the second LED 92 of the display unit 90 makes it possible to distinguish the presence or absence of normality on the input side and the output side, that is, visual identification. Of course it can be possible.

As described above, the electronic ballast incorporating the input / output fault detection circuit according to the present invention has an excellent effect of easily checking the state of the electronic ballast by checking whether it is normal for the input side operation and the output side operation. have.

In addition, it is possible to maximize the workability and efficiency in the place where the light load is used, and even if the abnormality of the electronic ballast does not need to cut off the power unconditionally, there is a remarkable effect that the user can easily determine whether or not. .

As can be seen from the object, configuration and effect of the present invention as described above, the present invention provides an input detection unit for displaying the state of the electronic ballast to the input side operation and the output side operation to check the normal state if there is an error and to display the status easily; The output detector is the core feature, and other changeable configurations can be understood as the number of various cases, and the present invention includes all of the number of such changeable cases and the interpretation of the claims is also equivalent thereto.

Claims (7)

The AC commercial power of the input power supply unit 10 is converted into a DC power source through the full-wave rectifying unit 20 and the power factor improving unit 30, and a square wave having a frequency corresponding to the lighting load 60 is formed while passing through the inverter unit 40. In the electronic ballast to form a power of the SINE WAVE in the resonator 50 to turn on the lighting load 60, The input detection unit 70 interlocked with the full-wave rectifying unit 20 is provided, and when the input power of the input power supply unit 10 is drawn within an appropriate range, the display unit 90 is turned on as the input detection unit 70 to be in a steady state. To indicate that When the input power of the input power supply unit 10 is drawn to a size less than the normal range or less than the normal range, the input detection unit 70 by turning off the display unit 90 to indicate that the abnormal state Electronic ballast with built-in detection circuit. The AC commercial power of the input power supply unit 10 is converted into a DC power source through the full-wave rectifying unit 20 and the power factor improving unit 30, and a square wave having a frequency corresponding to the lighting load 60 is formed while passing through the inverter unit 40. In the electronic ballast to form a power of the SINE WAVE in the resonator 50 to turn on the lighting load 60, An output detector 80 for detecting a current flowing through the illumination load 60 is connected to the resonator 50 to detect and compare the amount of current when the current flows through the illumination load 60 and to display the current 90. Turn on to indicate the normal state, Checking the output state of the lighting load 60, if the input power is drawn in the proper range, but the output current is small flow does not operate, the display unit 90 is turned off to display the abnormal state, characterized in that the fault Electronic ballast with built-in detection circuit. The AC commercial power of the input power supply unit 10 is converted into a DC power source through the full-wave rectifying unit 20 and the power factor improving unit 30, and a square wave having a frequency corresponding to the lighting load 60 is formed while passing through the inverter unit 40. In the electronic ballast to form a power of the SINE WAVE in the resonator 50 to turn on the lighting load 60, The input detection unit 70 interlocked with the full-wave rectifying unit 20 is provided, and when the input power of the input power supply unit 10 is drawn within an appropriate range, the display unit 90 is turned on as the input detection unit 70 to be in a steady state. To indicate that When the input power of the input power supply unit 10 is drawn to a size less than the normal range or less, the display unit 90 is turned off as the input detection unit 70 to indicate an abnormal state. An output detector 80 for detecting a current flowing through the illumination load 60 is connected to the resonator 50 to detect and compare the amount of current when the current flows through the illumination load 60 and to display the current 90. Turn on to indicate the normal state, Checking the output state of the lighting load 60, the input power input is within the appropriate range, but if the output current is small flow does not operate, the display unit 90 is turned off to display the abnormal state, characterized in that Electronic ballast with fault detection circuit. The method according to any one of claims 1 to 3, The input detector 70 The second capacitor C2 while distributing the voltage via the first capacitor C1 connected to both ends of the full wave rectifying unit 20 to the first resistor R1, the second resistor R2, and the third resistor R3. The first zener diode (ZD1) is turned on to be converted to a constant voltage source through the input-side constant voltage output IC (70a) when the voltage is above a certain level, and the value is compared. The first LED 91 of the display unit 90 is turned on via R5 to indicate that the input side is in a normal state.  When the voltage across the fourth resistor R4 is less than or equal to the conduction voltage of the first zener diode ZD1, the first zener diode ZD1 is not conducting and the input side constant voltage output IC 70a is not operated. An electronic ballast incorporating an input / output side fault detection circuit characterized in that the first LED (91) of the display unit (90) is not lit so that the input side is in an abnormal state. The method of claim 4, wherein And an auxiliary second zener diode (ZD2) for maintaining a constant voltage at all times when the input side constant voltage output IC (70a) is defective. The method according to any one of claims 1 to 3, The output detector 80 When a voltage is formed through the inverter unit 40 and power is applied to the lighting load 60 as a time constant through the tenth capacitor C10, the primary coil L1, and the twentieth capacitor C20. The current flows through the primary coil L1 and enables the charge through the thirtieth capacitor C30 and the voltage distribution through the thirtieth resistor R30 by using an induced voltage induced in the secondary coil L2. At the same time, the voltage through the thirtieth resistor R30 is converted into a constant voltage source using the constant voltage output IC 80a of the output side, and when the value is normal, the display unit 90 via the 40th resistor R40 when the value is normal. The second LED 92 of the lamp to be lit to indicate that the output side is normal, The half-wave rectified voltage is distributed through the tenth resistor R10 and the twentieth resistor R20 through the first diode D1 connected to the secondary coil L2, and the thirtieth capacitor C30 is charged. In addition, when the voltage across the thirtieth resistor R30 is less than or equal to the conduction voltage of the tenth zener diode ZD10, the tenth zener diode ZD10 is not conducted and at the same time, the output of the constant-voltage output IC 80a of the output side is output. The electronic ballast with the built-in input and output fault detection circuit, characterized in that the second LED (92) of the display unit 90 is turned off so that no voltage is formed. The method of claim 6, The input / output side fault detection further comprises an auxiliary twentieth zener diode (ZD20) and a current limiting (50th resistor) R50 for constantly maintaining a constant voltage when the output-side constant voltage output IC 80a is defective. Electronic ballast with integrated circuit.

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