CN201216040Y - Light modulation control signal generator for light modulation fluorescent lamp ballast - Google Patents

Light modulation control signal generator for light modulation fluorescent lamp ballast Download PDF

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Publication number
CN201216040Y
CN201216040Y CNU2008200602078U CN200820060207U CN201216040Y CN 201216040 Y CN201216040 Y CN 201216040Y CN U2008200602078 U CNU2008200602078 U CN U2008200602078U CN 200820060207 U CN200820060207 U CN 200820060207U CN 201216040 Y CN201216040 Y CN 201216040Y
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China
Prior art keywords
control signal
signal generator
fluorescent lamp
normally closed
dimming
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Expired - Lifetime
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CNU2008200602078U
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Chinese (zh)
Inventor
桂蔓村
陈忠
毛斌
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ZONGLING ELECTRONICS (SHANGHAI) CO Ltd
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ZONGLING ELECTRONICS (SHANGHAI) CO Ltd
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Abstract

The utility model relates to a dimming control signal generator for a dimming fluorescent lamp ballast, wherein a power input line is connected with controlled silicon, a resistance which is arranged between a control electrode of the controlled silicon and the power input line is connected with a normally closed switch in series, the normally closed switch is parallelly connected with a voltage regulator diode or a bidirectional trigger diode, the control electrode of the controlled silicon is further connected with a first anode of the controlled silicon through a capacitance, and is connected with a dimming electronic ballast. The dimming control signal generator has the advantages that alternating current supply voltage waveform is equipped with a fixed cut off angle in the moment of dimming operation, after the operation action finishes, a normal state is recovered, thereby overcoming the defects which is brought when traditional controlled silicon is controlled and dimmed through a phase that the distortion of total current harmonic is large and the electromagnetic interference is large.

Description

Fluorescent lamp ballast dimming control signal generator
Technical field
The utility model relates to a kind of dimming control technique of electric ballast fluorescent lamp, particularly a kind of dimming control signal generator.
Background technology
After fluorescent lamp had become current main architectural lighting light source, the dimmable fluorescent lamp electric ballast had obtained developing rapidly and using because of having tangible power savings in recent years.
In original ballast supply line, transmit dimming control signal, can not change the internal wiring of existing building and come into one's own.Prior art is to utilize a supply lines to transmit dimming control signal, angle of cut-off by continuously changing bidirectional triode thyristor the block diagram of dimming electronic ballast, as shown in Figure 1, power supply phase line L is after the on/off switch SW, by bidirectional triode thyristor T, diac D, in the dimming control signal generator that phase shift potentiometer R and phase shifting capacitor C form, by adjusting phase shift potentiometer R, change phase shifting capacitor C powers on and is pressed onto the time that reaches diac D trigger voltage, the angle of cut-off that passes through controllable silicon T that can obtain continuously changing.Dimming control signal is sent to electric ballast by the supply lines of ballast, in the dimming ballast except the rectification circuit, circuit of power factor correction and the inverter that connect successively, the angle of cut-off information translation that the dimming control signal interface circuit is sent here from phase line is the dc low-voltage signal of a variation, deliver to inverter circuit, the power of control ballast output driving fluorescent lamp, thereby the luminosity of change fluorescent lamp.Thisly continuously change mode, when mains voltage waveform has big angle of cut-off, can cause problems such as ballast electric current total harmonic distortion is big, and electromagnetic interference is big by the silicon controlled angle of cut-off by adjusting the phase shift potentiometer.
Summary of the invention
Technical problem to be solved in the utility model is in order to overcome traditional controllable silicon phase-controlled dimming during brightness of fluorescent lamp is controlled, mains voltage waveform remains defectives such as certain total current harmonic distortion that brings than big angle of cut-off is big, electromagnetic interference is big, providing a kind of only makes the AC supply voltage waveform that a fixing angle of cut-off be arranged in the light modulation operation moment, after operational motion finishes, promptly recover the fluorescent lamp ballast dimming control signal generator of normal sinusoidal voltage waveform.
In order to solve above technical problem, the utility model provides a kind of fluorescent lamp ballast dimming control signal generator, power input line connects a controllable silicon, there is a resistance to be connected in series a normally closed switch between the silicon controlled control utmost point and the power input line, a normally closed switch voltage stabilizing didoe in parallel or bidirectional trigger diode, the SCR control utmost point also is connected with the controllable silicon first anode by an electric capacity, and is connected to dimming electronic ballast.
Described normally closed switch and be one group or two groups with its voltage-stabiliser tube in parallel and connect.
Described controllable silicon is bidirectional triode thyristor or one-way SCR, and one-way SCR is between anode and negative electrode and connect a backward diode, and the control utmost point of one-way SCR is connected with its negative electrode by an electric capacity, and is connected with dimming electronic ballast.
Described and normally closed switch and the voltage stabilizing didoe that connects polarity arbitrarily are connected.
Described and normally closed switch and the voltage stabilizing didoe that connects are made up of two voltage stabilizing didoes that oppositely are connected in series.
Described and normally closed switch and the diode that connects are bidirectional trigger diode.
When push-button switch AN is not pressed, be shifting resistance R between the second plate A2 of bidirectional triode thyristor T and the control utmost point G, the angle of cut-off of bidirectional triode thyristor T is minimum, and the mains voltage waveform that is input to electric ballast almost is a pure sinusoid.When the push-button switch AN of control switch presses, when promptly disconnecting, the amplitude of alternating voltage is higher than before the reverse breakdown voltage of the voltage stabilizing didoe Z in parallel with push-button switch AN, bidirectional triode thyristor T remain off state, then remain conducting state afterwards, in the blink that push-button switch AN presses, export a columns ten to hundreds of individual fixedly sinusoidal voltage waveforms of angle of cut-off of being with.
Choose the trigger voltage value of reverse breakdown voltage or the bidirectional trigger diode DIAC of voltage stabilizing didoe Z according to the size of required angle of cut-off.Also can connect to obtain required reverse breakdown voltage or trigger voltage with more than one voltage stabilizing didoe or bidirectional trigger diode.
Superior effect of the present utility model is: only moment make the AC supply voltage waveform that a fixing angle of cut-off be arranged in the light modulation operation, after operational motion finishes, promptly recover normal condition, exist the defective that total current harmonic distortion is big, electromagnetic interference is big when overcoming traditional controllable silicon phase-controlled dimming.
Description of drawings
Fig. 1 is the theory diagram of existing fluorescent lamp ballast;
Fig. 2 is the circuit diagram that alternating current positive pressure half cycle of the present utility model has angle of cut-off;
Fig. 3 is the circuit diagram that alternating voltage negative half period of the present utility model has angle of cut-off;
Fig. 4 is that alternating voltage positive-negative half-cycle of the present utility model all has one of circuit diagram of angle of cut-off;
Fig. 5 is two of an alternating voltage positive-negative half-cycle of the present utility model circuit diagram that angle of cut-off is arranged;
Fig. 6 is the circuit diagram that alternating current positive pressure half cycle of the present utility model or negative half period have angle of cut-off;
Fig. 7 is the circuit diagram that the utility model adopts one-way SCR.
Embodiment
See also shown in the accompanying drawing, the utility model will be further described.
As Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, the utility model provides a kind of fluorescent lamp ballast dimming control signal generator, power input line connects a controllable silicon, there is a resistance to be connected in series a normally closed switch between the silicon controlled control utmost point and the power input line, a normally closed switch voltage stabilizing didoe in parallel or bidirectional trigger diode, the SCR control utmost point also is connected with the controllable silicon first anode by a capacitor, and is connected to dimming electronic ballast.
Described normally closed switch and be one group or two groups with its voltage-stabiliser tube in parallel and connect.
Described controllable silicon is bidirectional triode thyristor or one-way SCR, and one-way SCR is between anode and negative electrode and connect a backward diode, and the control utmost point of one-way SCR is connected with its negative electrode by a capacitor, and is connected with dimming electronic ballast.
Described and normally closed switch and the voltage stabilizing didoe that connects polarity arbitrarily are connected.
Described and normally closed switch and the voltage stabilizing didoe that connects are made up of two voltage stabilizing didoes that oppositely are connected in series.
Described and normally closed switch and the diode that connects are bidirectional trigger diode.
When push-button switch AN is not pressed, be connected to shifting resistance R between the second plate A2 of bidirectional triode thyristor T and the control utmost point G, the angle of cut-off of bidirectional triode thyristor T is minimum, and the mains voltage waveform that is input to electric ballast almost is a pure sinusoid.
When the push-button switch AN of control switch presses, the reverse breakdown voltage (or trigger voltage of bidirectional trigger diode DIAC) that is higher than the voltage stabilizing didoe Z in parallel with push-button switch AN in the amplitude of alternating voltage before, bidirectional triode thyristor T remain off state, afterwards, voltage on the phase shifting capacitor C makes bidirectional triode thyristor T conducting immediately, and output has the voltage waveform of angle of cut-off.In push-button switch AN presses the blink of (disconnection), export a columns ten to hundreds of individual fixedly sinusoidal voltage waveforms of angle of cut-off of being with.
Choose the trigger voltage value of reverse breakdown voltage or the bidirectional trigger diode DIAC of voltage stabilizing didoe Z according to the size of required angle of cut-off.Can connect to obtain required reverse breakdown voltage or trigger voltage with more than one voltage stabilizing didoe or bidirectional trigger diode.
Choice of location according to angle of cut-off on the needed output voltage waveforms is attempted by the connected mode that push-button switch AN goes up voltage stabilizing didoe Z:
1) as shown in Figure 2, voltage stabilizing didoe Z is in parallel with push-button switch AN, the anode of voltage stabilizing didoe Z meets the control utmost point G of bidirectional triode thyristor T behind shifting resistance R, the negative electrode of voltage stabilizing didoe Z meets the second plate A2 of bidirectional triode thyristor T, when push-button switch AN pressed (disconnection), output voltage waveforms had a fixedly angle of cut-off of being determined by voltage stabilizing didoe reverse breakdown voltage value at positive half cycle.
2) as shown in Figure 3, voltage stabilizing didoe Z is in parallel with push-button switch AN, the negative electrode of voltage stabilizing didoe Z meets the control utmost point G of bidirectional triode thyristor T behind shifting resistance R, the anode of voltage stabilizing didoe Z meets the second plate A2 of bidirectional triode thyristor T, when push-button switch AN pressed (disconnection), output voltage waveforms had a fixedly angle of cut-off of being determined by voltage stabilizing didoe reverse breakdown voltage value at negative half period.
3) as shown in Figure 4, in parallel with two voltage stabilizing didoe Z1 and Z2 that oppositely are connected in series with push-button switch AN, behind the series connection shifting resistance R, be connected between the second plate A2 and control utmost point G of bidirectional triode thyristor T, when push-button switch AN pressed (disconnection), output voltage waveforms all had a fixedly angle of cut-off of being determined by voltage stabilizing didoe reverse breakdown voltage value at positive and negative half cycle.
4) as shown in Figure 5, in parallel with a bidirectional trigger diode DIAC with push-button switch AN, behind the series connection shifting resistance R, be connected between the control utmost point G and second plate A2 of bidirectional triode thyristor T, when push-button switch AN pressed (disconnection), output voltage waveforms all had a fixedly angle of cut-off of being determined by the trigger voltage value of bidirectional trigger diode DIAC at positive and negative half cycle equally.
5) as shown in Figure 6, in parallel and be connected by voltage stabilizing didoe Z1 and push-button switch AN1 by two groups of control switch differential concatenations of voltage stabilizing didoe Z2 and push-button switch AN2 parallel connection, after being connected in series with shifting resistance R again, be connected in parallel on the second plate A2 and control utmost point G of bidirectional triode thyristor T.When pressing the button switch AN1, a fixedly angle of cut-off of being determined by voltage stabilizing didoe Z1 reverse breakdown voltage value is arranged on the positive half cycle of output voltage waveforms; When pressing the button switch AN2, a fixedly angle of cut-off of being determined by voltage stabilizing didoe Z2 reverse breakdown voltage value is arranged on the negative half period of output voltage waveforms;
6) as shown in Figure 7, substitute bidirectional triode thyristor with the one-way SCR that is parallel with a diode D.The anode of diode D negative electrode and one-way SCR T connects the input of power line, and the anode of diode and the negative electrode of one-way SCR connect the output of power line.When push-button switch AN presses (disconnection), a fixedly angle of cut-off of being determined by voltage stabilizing didoe reverse breakdown voltage value is arranged on the positive half cycle of output voltage waveforms.If input and output switch with power line then when push-button switch AN presses (disconnection), have a fixedly angle of cut-off of being determined by voltage stabilizing didoe reverse breakdown voltage value on the negative half period of output voltage waveforms.

Claims (6)

1, a kind of fluorescent lamp ballast dimming control signal generator is characterized in that:
Power input line connects a controllable silicon, there is a resistance to be connected in series a normally closed switch between the silicon controlled control utmost point and the power input line, a normally closed switch voltage stabilizing didoe in parallel or bidirectional trigger diode, the SCR control utmost point also is connected with the controllable silicon first anode by an electric capacity, and is connected to dimming electronic ballast.
2, by the described fluorescent lamp ballast dimming control signal generator of claim 1, it is characterized in that:
Described normally closed switch and be one group or two groups with its voltage-stabiliser tube in parallel and connect.
3, by the described fluorescent lamp ballast dimming control signal generator of claim 1, it is characterized in that:
Described controllable silicon is bidirectional triode thyristor or one-way SCR, and one-way SCR is between anode and negative electrode and connect a backward diode, and the control utmost point of one-way SCR is connected with its negative electrode by an electric capacity, and is connected with dimming electronic ballast.
4, by the described fluorescent lamp ballast dimming control signal generator of claim 1, it is characterized in that:
Described and normally closed switch and the voltage stabilizing didoe that connects polarity arbitrarily are connected.
5, by the described fluorescent lamp ballast dimming control signal generator of claim 4, it is characterized in that:
Described and normally closed switch and the voltage stabilizing didoe that connects are made up of two voltage stabilizing didoes that oppositely are connected in series.
6, by the described fluorescent lamp ballast dimming control signal generator of claim 4, it is characterized in that:
Described and normally closed switch and the diode that connects are bidirectional trigger diode.
CNU2008200602078U 2008-06-24 2008-06-24 Light modulation control signal generator for light modulation fluorescent lamp ballast Expired - Lifetime CN201216040Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200602078U CN201216040Y (en) 2008-06-24 2008-06-24 Light modulation control signal generator for light modulation fluorescent lamp ballast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200602078U CN201216040Y (en) 2008-06-24 2008-06-24 Light modulation control signal generator for light modulation fluorescent lamp ballast

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105843045A (en) * 2015-01-13 2016-08-10 东林科技股份有限公司 Electric appliance control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105843045A (en) * 2015-01-13 2016-08-10 东林科技股份有限公司 Electric appliance control system

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Granted publication date: 20090401