CN105934062A - Frequency-stabilizing circuit based low-noise electronic ballast - Google Patents
Frequency-stabilizing circuit based low-noise electronic ballast Download PDFInfo
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- CN105934062A CN105934062A CN201610421883.2A CN201610421883A CN105934062A CN 105934062 A CN105934062 A CN 105934062A CN 201610421883 A CN201610421883 A CN 201610421883A CN 105934062 A CN105934062 A CN 105934062A
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- audion
- pole
- electric capacity
- resistance
- pin
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention discloses a frequency-stabilizing circuit based low-noise electronic ballast. The low-noise electronic ballast is characterized by mainly comprising a processing chip U1, a diode rectifier U, a capacitor C1, an electromagnetic filtering circuit, a resistor R2, a resistor R4, a frequency-stabilizing circuit and the like, wherein the positive electrode of the capacitor C1 is connected with the positive electrode output end of the diode rectifier U while the negative electrode of the capacitor C1 is connected with the negative electrode output end of the diode rectifier U; the electromagnetic filtering circuit is connected with the capacitor C1; one end of the resistor R2 is connected with the RT pin of the processing chip U1 while the other end of the resistor R2 is connected with the electromagnetic filtering circuit; the resistor R4 is connected between the PGND pin and the SGND pin of the processing chip U1 in series; and the frequency-stabilizing circuit is connected with the VS pin of the processing chip U1. By adoption of the frequency-stabilizing circuit based low-noise electronic ballast, the voltage frequency can be processed, so that the frequency of the output voltage can be more stable; and meanwhile, the stroboscopic phenomenon of a fluorescent lamp can be avoided, so that the light emission of the fluorescent lamp can be more stable.
Description
Technical field
The present invention relates to a kind of ballast, specifically refer to a kind of low noise electric ballast based on frequency stabilization circuit.
Background technology
Along with the development of society, ballast has been widely used on daylight lamp, and ballast can make input
Current stabilization is in the range of the rated current of fluorescent tube, and the voltage of lamp tube ends is also stabilized in specified work
In voltage range, play the effect of blood pressure lowering current limliting, not only protect daylight lamp, and make the illumination of daylight lamp
Effect is more preferable.But, traditional ballast is easily subject to the impact of electromagnetic interference signal, causes its stability
Low, what this was serious have impact on the service life of daylight lamp.
Summary of the invention
It is an object of the invention to the defect overcoming traditional ballast to be easily subject to electromagnetic interference signal impact,
A kind of low noise electric ballast based on frequency stabilization circuit is provided.
The purpose of the present invention is achieved through the following technical solutions: a kind of low noise electronics town based on frequency stabilization circuit
Stream device, mainly by processing chip U1, diode rectifier U, positive pole is defeated with the positive pole of diode rectifier U
Go out the electric capacity C1 that end is connected, negative pole then cathode output end with diode rectifier U is connected, with electric capacity
The em filtering circuit that C1 is connected, one end with process chip U RT pin be connected, the other end then with
The resistance R2 that em filtering circuit is connected, is serially connected in PGND pin and the SGND pipe processing chip U1
Resistance R4 between foot, the frequency stabilization circuit being connected with the VS pin processing chip U1, respectively with frequency stabilization electricity
The transformation output circuit that road is connected with em filtering circuit, and N pole with process chip U1 VB pin
Be connected, P pole after resistance R3 with process chip U1 VCC pin be connected diode D3 composition；
The VCC pin of described process chip U with HV pin all positive pole with electric capacity C1 be connected, its VB pipe
Foot is connected with transformation output circuit, its CT pin and SGND pin are all connected with em filtering circuit.
Further, described frequency stabilization circuit, by audion VT4, audion VT5, audion VT6, amplifies
Device P, negative pole is connected with the base stage of audion VT4, positive pole is as the electric capacity of the input of this frequency stabilization circuit
C8, one end is connected with the base stage of audion VT4, the other end after inductance L with the collection of audion VT5
The resistance R9 that electrode is connected, positive pole is connected with the base stage of audion VT4, negative pole after resistance R13 with
The electric capacity C9 that the emitter stage of audion VT6 is connected, is serially connected in emitter stage and the electric capacity C9 of audion VT4
Negative pole between resistance R10, P pole be connected with the emitter stage of audion VT5, N pole and electric capacity C9
Negative pole be connected while the diode D4 of ground connection, positive pole is connected with the outfan of amplifier P, negative pole with
The electric capacity C10 that the negative pole of electric capacity C9 is connected, is serially connected in positive pole and the base of audion VT6 of amplifier P
Resistance R11 between pole, and one end is connected with the colelctor electrode of audion VT6, the electricity of other end ground connection
Resistance R12 composition；The base stage of described audion VT5 is connected with the colelctor electrode of audion VT4, its emitter stage
Be connected with the negative pole of amplifier P, its colelctor electrode then positive pole with amplifier P is connected；Described amplifier P
Outfan be connected with the emitter stage of audion VT6；The emitter stage of described audion VT6 is as this frequency stabilization
The outfan of circuit is also connected with transformation output circuit；The input of described frequency stabilization circuit then with process chip
The VS pin of U1 is connected.
Described em filtering circuit, by field effect transistor MOS, audion VT1, is serially connected in field effect transistor MOS
Drain and gate between resistance R1, P pole be connected with the drain electrode of field effect transistor MOS, N pole is then with three
The diode D1 that the emitter stage of pole pipe VT1 is connected, positive pole is connected with the source electrode of field effect transistor MOS,
The electric capacity C2 that negative pole then base stage with audion VT1 is connected, the colelctor electrode phase of negative pole and audion VT1
Connect, the emitter stage phase of electric capacity C3, the P pole that is then connected with transformation output circuit of positive pole and audion VT1
Connect, N pole then with the diode D2 that is connected of CT pin processing chip U1, and positive pole and three poles
The emitter stage of pipe VT1 is connected, negative pole connects while being then connected with the SGND pin processing chip U1
The electric capacity C4 composition on ground；The described negative pole of electric capacity C1 is connected with the grid of field effect transistor MOS；Described
The grid of field effect transistor MOS is also connected with the RT pin processing chip U1 after resistance R2.
Described transformation output circuit, by transformator T, audion VT2, audion VT3, is serially connected in audion
Resistance R5 between colelctor electrode and the VB pin processing chip U1 of VT2, positive pole is with audion VT2's
The electric capacity C5 that colelctor electrode is connected, negative pole base stage with audion VT3 after resistance R6 is connected, positive pole
Be connected with the emitter stage of audion VT2, negative pole emitter stage with audion VT3 after resistance R8 is connected
The electric capacity C6 connect, positive pole and the Same Name of Ends of former limit inductance coil of transformator T, negative pole are then with transformator T's
The non-same polarity of former limit inductance coil be connected while the electric capacity C7 of ground connection, and be serially connected in electric capacity C3's
Resistance R7 composition between the Same Name of Ends of the former limit inductance coil of positive pole and transformator T；Described audion VT2
Base stage be connected with the outfan of frequency stabilization circuit, its grounded emitter；The colelctor electrode of described audion VT3
It is connected with the non-same polarity of the secondary inductance coil of transformator T.
Described process chip U1 is the integrated chip of GR6953.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) present invention can suppress the electromagnetic interference signal produced in work, reduces electromagnetic interference letter
Impact number on the present invention, greatly improves the stability of the present invention, makes the work that daylight lamp can be stable,
Thus extend the working life of daylight lamp.
(2) electric voltage frequency can be processed by the present invention so that it is the frequency of output voltage is more stable, keeps away
Exempt from daylight lamp and the existing picture of stroboscopic occurs, so that daylight lamp luminescence is more stable.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structure chart of the frequency stabilization circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention do not limit
In this.
Embodiment
As it is shown in figure 1, the present invention is mainly by processing chip U1, diode rectifier U, positive pole and diode
The cathode output end of commutator U is connected, negative pole then cathode output end with diode rectifier U is connected
Electric capacity C1, the em filtering circuit being connected with electric capacity C1, one end with process chip U RT pin
Be connected, resistance R2 that the other end is then connected with em filtering circuit, be serially connected in and process chip U1's
Resistance R4 between PGND pin and SGND pin, is connected with the VS pin processing chip U1
Frequency stabilization circuit, the transformation output circuit being connected with frequency stabilization circuit and em filtering circuit respectively, and N pole
Be connected with the VB pin processing chip U1, P pole is managed with the VCC processing chip U1 after resistance R3
The diode D3 composition that foot is connected.
The VCC pin of described process chip U with HV pin all positive pole with electric capacity C1 be connected, its VB
Pin is connected with transformation output circuit, its CT pin and SGND pin are all connected with em filtering circuit
Connect.In order to preferably implement the present invention, the described process chip U1 integrated chip of preferred GR6953 realizes.
Further, this em filtering circuit is by field effect transistor MOS, audion VT1, resistance R1, electricity
Hold C2, electric capacity C3, electric capacity C4, diode D1 and diode D2 composition.
During connection, resistance R1 is serially connected between the drain and gate of field effect transistor MOS.The P of diode D1
Pole is connected with the drain electrode of field effect transistor MOS, its N pole then emitter stage with audion VT1 is connected.
The positive pole of electric capacity C2 is connected with the source electrode of field effect transistor MOS, its negative pole then with the base stage of audion VT1
It is connected.The negative pole of electric capacity C3 is connected with the colelctor electrode of audion VT1, its positive pole then exports with transformation
Circuit is connected.The P pole of diode D2 is connected with the emitter stage of audion VT1, its N pole then with place
The CT pin of reason chip U1 is connected.The positive pole of electric capacity C4 is connected with the emitter stage of audion VT1,
Its negative pole then with process chip U1 SGND pin be connected while ground connection.
Meanwhile, the described negative pole of electric capacity C1 is connected with the grid of field effect transistor MOS.Described field effect transistor
The grid of MOS is also connected with the RT pin processing chip U1 after resistance R2.
It addition, described transformation output circuit is by transformator T, audion VT2, audion VT3, resistance R5,
Resistance R6, resistance R7, resistance R8, electric capacity C5, electric capacity C6 and electric capacity C7 form.
During connection, resistance R5 be serially connected in audion VT2 colelctor electrode and process chip U1 VB pin it
Between.The positive pole of electric capacity C5 is connected with the colelctor electrode of audion VT2, its negative pole after resistance R6 with three poles
The base stage of pipe VT3 is connected.The positive pole of electric capacity C6 is connected with the emitter stage of audion VT2, its negative pole
After resistance R8, the emitter stage with audion VT3 is connected.The positive pole of electric capacity C7 and the former limit of transformator T
The Same Name of Ends of inductance coil, its negative pole then non-same polarity with the former limit inductance coil of transformator T is connected
Ground connection simultaneously.Resistance R7 is serially connected in the positive pole of electric capacity C3 and the Same Name of Ends of the former limit inductance coil of transformator T
Between.The described base stage of audion VT2 is connected with the outfan of frequency stabilization circuit, its grounded emitter.Institute
State the colelctor electrode of audion VT3 to be connected with the non-same polarity of the secondary inductance coil of transformator T.Daylight lamp
Then it is serially connected between Same Name of Ends and the negative pole of electric capacity C1 of the secondary inductance coil of transformator T.
As in figure 2 it is shown, this frequency stabilization circuit is by audion VT4, audion VT5, audion VT6, amplify
Device P, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, electric capacity C8, electric capacity C9,
Electric capacity C10, diode D4 and inductance L form.
During connection, the negative pole of electric capacity C8 is connected with the base stage of audion VT4, its positive pole is as this frequency stabilization
The input of circuit is also connected with the VS pin processing chip U.One end of resistance R9 and audion VT4
Base stage be connected, its other end colelctor electrode with audion VT5 after inductance L is connected.Electric capacity C9
Positive pole be connected with the base stage of audion VT4, its negative pole after resistance R13 with the transmitting of audion VT6
Pole is connected.Resistance R10 is serially connected between the emitter stage of audion VT4 and the negative pole of electric capacity C9.Two poles
The P pole of pipe D4 is connected with the emitter stage of audion VT5, its N pole is connected with the negative pole of electric capacity C9
While ground connection.The positive pole of electric capacity C10 is connected with the outfan of amplifier P, its negative pole and electric capacity C9
Negative pole be connected.Resistance R11 is serially connected between the positive pole of amplifier P and the base stage of audion VT6.Electricity
One end of resistance R12 is connected with the colelctor electrode of audion VT6, its other end ground connection.
Meanwhile, the base stage of described audion VT5 be connected with the colelctor electrode of audion VT4, its emitter stage with
The negative pole of amplifier P is connected, its colelctor electrode then positive pole with amplifier P is connected.Described amplifier P
Outfan be connected with the emitter stage of audion VT6.The emitter stage of described audion VT6 is as this frequency stabilization
The outfan of circuit is also connected with the base stage of audion VT2.
During work, after the present invention is to power frequency supply all wave rectification and Active PFC, power frequency supply is made to become
DC source, DC source, after conversion, exports the high-frequency ac power of 20K-100KHZ, thus protects
Card daylight lamp obtains the voltage and current needed for normal work.The present invention can do the electromagnetism produced in work
Disturb signal to suppress, reduce the electromagnetic interference signal impact on the present invention, greatly improve the present invention's
Stability, makes the work that daylight lamp can be stable, thus extends the working life of daylight lamp.Meanwhile, originally
Electric voltage frequency can be processed by invention so that it is the frequency of output voltage is more stable, it is to avoid daylight lamp goes out
The existing picture of existing stroboscopic, so that daylight lamp luminescence is more stable.
As it has been described above, the present invention just can well be realized.
Claims (5)
1. a low noise electric ballast based on frequency stabilization circuit, it is characterised in that mainly by processing chip
U1, diode rectifier U, positive pole is connected with the cathode output end of diode rectifier U, negative pole then with
The electric capacity C1 that the cathode output end of diode rectifier U is connected, the em filtering being connected with electric capacity C1
Circuit, one end is connected with the RT pin processing chip U, the other end is then connected with em filtering circuit
Resistance R2, be serially connected in process chip U1 PGND pin and SGND pin between resistance R4,
The frequency stabilization circuit being connected with the VS pin processing chip U1, respectively with frequency stabilization circuit and em filtering circuit
The transformation output circuit being connected, and N pole is connected with the VB pin processing chip U1, P pole is through electricity
The diode D3 composition being connected with the VCC pin processing chip U1 after resistance R3；Described process chip U
VCC pin with HV pin all positive pole with electric capacity C1 be connected, its VB pin and transformation output electricity
Road is connected, its CT pin is all connected with em filtering circuit with SGND pin.
A kind of low noise electric ballast based on frequency stabilization circuit the most according to claim 1, its feature
Being, described frequency stabilization circuit is by audion VT4, audion VT5, audion VT6, amplifier P, negative
Pole is connected with the base stage of audion VT4, positive pole is as the electric capacity C8 of the input of this frequency stabilization circuit, one end
Be connected with the base stage of audion VT4, other end colelctor electrode with audion VT5 after inductance L is connected
Resistance R9, positive pole is connected with the base stage of audion VT4, negative pole after resistance R13 with audion VT6
The electric capacity C9 that is connected of emitter stage, be serially connected between the emitter stage of audion VT4 and the negative pole of electric capacity C9
Resistance R10, P pole be connected with the emitter stage of audion VT5, N pole is connected with the negative pole of electric capacity C9
While the diode D4 of ground connection, positive pole is connected with the outfan of amplifier P, negative pole is with electric capacity C9's
The electric capacity C10 that negative pole is connected, is serially connected in the electricity between the positive pole of amplifier P and the base stage of audion VT6
Resistance R11, and one end is connected with the colelctor electrode of audion VT6, the resistance R12 of other end ground connection composition；
The base stage of described audion VT5 is connected with the colelctor electrode of audion VT4, its emitter stage and amplifier P
Negative pole is connected, its colelctor electrode then positive pole with amplifier P is connected；The outfan of described amplifier P with
The emitter stage of audion VT6 is connected；The emitter stage of described audion VT6 is as the output of this frequency stabilization circuit
End is also connected with transformation output circuit；The input of described frequency stabilization circuit is then managed with the VS processing chip U1
Foot is connected.
A kind of low noise electric ballast based on frequency stabilization circuit the most according to claim 2, its feature
Being, described em filtering circuit, by field effect transistor MOS, audion VT1, is serially connected in field effect transistor MOS
Drain and gate between resistance R1, P pole be connected with the drain electrode of field effect transistor MOS, N pole is then with three
The diode D1 that the emitter stage of pole pipe VT1 is connected, positive pole is connected with the source electrode of field effect transistor MOS,
The electric capacity C2 that negative pole then base stage with audion VT1 is connected, the colelctor electrode phase of negative pole and audion VT1
Connect, the emitter stage phase of electric capacity C3, the P pole that is then connected with transformation output circuit of positive pole and audion VT1
Connect, N pole then with the diode D2 that is connected of CT pin processing chip U1, and positive pole and three poles
The emitter stage of pipe VT1 is connected, negative pole connects while being then connected with the SGND pin processing chip U1
The electric capacity C4 composition on ground；The described negative pole of electric capacity C1 is connected with the grid of field effect transistor MOS；Described
The grid of field effect transistor MOS is also connected with the RT pin processing chip U1 after resistance R2.
A kind of low noise electric ballast based on frequency stabilization circuit the most according to claim 3, its feature
Being, described transformation output circuit, by transformator T, audion VT2, audion VT3, is serially connected in three poles
Resistance R5 between colelctor electrode and the VB pin processing chip U1 of pipe VT2, positive pole and audion VT2
The electric capacity C5 that colelctor electrode is connected, negative pole base stage with audion VT3 after resistance R6 is connected, just
Pole is connected with the emitter stage of audion VT2, negative pole after resistance R8 with the emitter stage phase of audion VT3
The electric capacity C6 connected, positive pole and the Same Name of Ends of former limit inductance coil of transformator T, negative pole then with transformator T
The non-same polarity of former limit inductance coil be connected while the electric capacity C7 of ground connection, and be serially connected in electric capacity C3
Positive pole and transformator T former limit inductance coil Same Name of Ends between resistance R7 composition；Described audion
The base stage of VT2 is connected with the outfan of frequency stabilization circuit, its grounded emitter；The collection of described audion VT3
Electrode is connected with the non-same polarity of the secondary inductance coil of transformator T.
A kind of low noise electric ballast based on frequency stabilization circuit the most according to claim 4, its feature
Being, described process chip U1 is the integrated chip of GR6953.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421883.2A CN105934062A (en) | 2016-06-12 | 2016-06-12 | Frequency-stabilizing circuit based low-noise electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421883.2A CN105934062A (en) | 2016-06-12 | 2016-06-12 | Frequency-stabilizing circuit based low-noise electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105934062A true CN105934062A (en) | 2016-09-07 |
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ID=56830517
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421883.2A Pending CN105934062A (en) | 2016-06-12 | 2016-06-12 | Frequency-stabilizing circuit based low-noise electronic ballast |
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| CN (1) | CN105934062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155778A (en) * | 2017-12-21 | 2018-06-12 | 北京卫星制造厂 | A kind of power module clock synchronization circuit |
-
2016
- 2016-06-12 CN CN201610421883.2A patent/CN105934062A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155778A (en) * | 2017-12-21 | 2018-06-12 | 北京卫星制造厂 | A kind of power module clock synchronization circuit |
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Application publication date: 20160907 |
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