CN105813274B - A kind of power driving circuit and LED lamp tube - Google Patents
A kind of power driving circuit and LED lamp tube Download PDFInfo
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- CN105813274B CN105813274B CN201610332938.2A CN201610332938A CN105813274B CN 105813274 B CN105813274 B CN 105813274B CN 201610332938 A CN201610332938 A CN 201610332938A CN 105813274 B CN105813274 B CN 105813274B
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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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of power driving circuit and LED lamp tube, which includes：First voltage input terminal, second voltage input terminal, the first simulation filament, the second simulation filament, high pass circuit, control circuit, isolation circuit, the first rectification circuit, the second rectification circuit and DC converting filter circuit, foregoing circuit has been interconnected to constitute power driving circuit, the power driving circuit can be applied to electric main, while compatible electronic ballast；The design of high pass circuit, control circuit and isolation circuit so that the power driving circuit meets electric leakage current test and voltage-withstand test in safety；On the other hand, including the LED lamp tube of power driving circuit not only can be with compatible electronic ballast, while also meets electric leakage current test and voltage-withstand test in safety, also improves the compatibility to different types of electric ballast.
Description
Technical field
The present invention relates to field of lamp illumination, more particularly to a kind of power driving circuit and LED lamp tube.
Background technology
At present, the traditional fluorescent lighting of LED replacement has huge prospect and market, and traditional fluorescent lamp is required for
There is electric ballast driving, as shown in Figure 1, the circuit of traditional fluorescent lamp includes electric ballast and fluorescent tube, fluorescent lamp
Pipe includes two filaments, and the L and N-terminal of electric ballast are used for incoming transport alternating current, when electric ballast starts to fluorescent tube
Two filaments preheated, then have two output terminal output high voltages of electric ballast again, light fluorescent tube.It is and current
Conventional LED light be all to be only operable on electric main, as shown in Fig. 2, the LED lamp tube in Fig. 2 is to be operated in electric main
Under.Therefore, fluorescent lamp is taken down, it is necessary to destroy original florescent lamp fitting system when replacing conventional fluorescent using LED illumination
Original ballast, is revised as directly being driven by electric main.But this circuit modification will bring problems with：Change people
Work is of high cost；Time and effort consuming；Destroy the Safety Approval of original lamps and lanterns.
For this reason, it may be necessary to a kind of power driving circuit and LED lamp tube are provided to solve the above problems.Although currently on the market
There is also the LED lamp tube of compatible electric ballast, but majority does not meet electric leakage current test and the voltage-withstand test in safety, and produces
Product it is compatible poor, the LED lamp tube of the compatible electric ballast in part is even led to by the way of mechanical touch switch are increased
Certification is crossed, this mode brings inconvenience to the use of client, meanwhile, the LED lamp tube of the compatible electric ballast in market is also
There are of high cost and fraction defective it is high the problems such as.
The content of the invention
It is an object of the invention to provide a kind of power driving circuit and LED lamp tube, it is intended to solves the above problems.
In order to solve the above-mentioned technical problem, in a first aspect, a kind of power driving circuit, the power driving circuit bag
Include：First voltage input terminal, second voltage input terminal, first simulation filament, second simulation filament, high pass circuit, control circuit,
Isolation circuit, the first rectification circuit and DC converting filter circuit, wherein, the first voltage input terminal, second voltage input
End is connected with the voltage output end of electric ballast；
The first voltage input terminal includes the first zero line and the first zero line side, the first simulation filament and described the
One zero line is connected with the first zero line side, and the second voltage input terminal includes the second zero line and the second zero line side, and described
Two simulation filaments are connected with second zero line and the second zero line side, and the first simulation filament and the second simulation filament are used for
Induce the electric ballast output high voltage；
The first input end of the control circuit passes through the high pass circuit and first zero line and the first zero line side
Connection, the second input terminal of the control circuit are connected with the second voltage input terminal, first zero line, the first zero curve
End and second zero line, the second zero line side are also connected with the isolation circuit；
The control circuit is also connected with the isolation circuit, when the high frequency voltage is by the high pass circuit, institute
State control circuit and be used to controlling the isolation circuit by the of first zero line and the first zero line side and the isolation circuit
One voltage output end connects, connects second zero line and the second zero line side and the second voltage output terminal of the isolation circuit
It is logical；
First rectification circuit is connected with first voltage output terminal, the second voltage output terminal of the isolation circuit, is used
In converting alternating current to direct current；
The DC converting filter circuit is connected with first rectification circuit, after the DC power conversion is filtered
Exported as driving voltage.
Preferably, the simulation filament is resettable fuse.
Preferably, the power driving circuit further includes the second rectification circuit, the control source of second rectification circuit
End is connected with the first voltage input terminal, the voltage output end of second rectification circuit and the DC converting filter circuit
Connection, the DC converting filter circuit are used for after the DC power conversion filtering using second rectification circuit output as driving
Voltage output, wherein, the first voltage input terminal is connected with electric main.
Preferably, the power driving circuit further includes a protection circuit, and the protection circuit is connected to first electricity
Input terminal is pressed, for protecting the power driving circuit.
Preferably, the high pass circuit includes the first capacitance and the second capacitance, the first end of first capacitance with it is described
The connection of first zero line side, second end are connected with the first end of second capacitance, the second end of second capacitance and described the
One zero line connects.
Preferably, the control circuit includes the first diode, the second diode, the 3rd diode, the 4th diode, the
Five diodes, first resistor and the 3rd capacitance；
First diode, the second diode, the 3rd diode and the 4th diode composition rectifier bridge, the rectification
The first end of electric bridge is the first input end of the control circuit, passes through the high pass circuit and first zero line and first
Zero line side connects, and the second end of the rectifier bridge inputs for the second input terminal of the control circuit, with the second voltage
End connection, the 3rd end of the rectifier bridge is connected by the first resistor with the anode of the 5th diode, described whole
4th end of galvanic electricity bridge is connected with the cathode of the 5th diode, the first end of the 3rd capacitance and bearing for the 5th diode
Pole connection, second end are connected with the cathode of the 5th diode.
Preferably, the isolation circuit includes controllable switch, the controllable switch by the control circuit control its open or
Close.
Further, the controllable switch includes the first relay and the second relay, first relay and second
Relay includes the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact and the 6th contact；
First relay, the second relay the first contact and the second contact between connected by inductance coil,
Second contact of first relay is connected with the first end of the 3rd capacitance, the second contact of second relay with
The second end connection of 3rd capacitance, the first contact of first relay connect with the first contact of second relay
Connect；
The control circuit is used to control first relay, the second relay the 3rd to touch by the inductance coil
Point and the conducting and disconnection of the 6th contact, the 4th contact and the 5th contact；
Wherein, first zero line, the first zero line side the 3rd contact, the 4th contact with first relay respectively
Connect, the first voltage behind the 5th contact of first relay and the 6th contact portion as the isolation circuit is defeated
Outlet；Second zero line, the second zero line side the 3rd contact with second relay, the 4th contact portion respectively, institute
State the second relay the 5th contact and the 6th contact portion after second voltage output terminal as the isolation circuit.
Further, first rectification circuit is the rectifier bridge being made of four diodes and the 4th capacitance；It is described
Second rectification circuit is the rectifier bridge being made of four diodes and the 5th capacitance.
Preferably, the protection circuit includes：Fuse and the 6th capacitance, described fuse one end and the first zero line or
The connection of first zero line side, the other end are connected with described 6th capacitance one end, the other end and the described 1st of the 6th capacitance
Line end or the connection of the first zero line.
Preferably, the power driving circuit further includes the 7th capacitance, and the both ends of the 7th capacitance are respectively with described
Two zero lines are connected with the second zero line side.
Second aspect, a kind of LED lamp tube, the LED lamp tube include any one above-mentioned power driving circuit.
Beneficial effect:A kind of power driving circuit is provided in the embodiment of the present invention, compared with prior art, the power supply
Drive circuit includes：First voltage input terminal, second voltage input terminal, the first simulation filament, the second simulation filament, high energization
Road, control circuit, isolation circuit, the first rectification circuit, the second rectification circuit and DC converting filter circuit, foregoing circuit are mutual
Power driving circuit is connected and composed, which can be applied to electric main, while compatible electronic ballast, i.e.,
Voltage is provided by electric ballast；The design of high pass circuit, control circuit and isolation circuit so that the power driving circuit meets
Electric leakage current test and voltage-withstand test in safety；In addition, the first simulation filament and the second simulation filament use resettable fuse,
More improve compatibility of the power driving circuit to different types of electric ballast.
On the other hand, the embodiment of the present invention additionally provides a kind of LED lamp tube, which not only can be with compatible electronic
Ballast, while also meet electric leakage current test and voltage-withstand test in safety, in addition, also improving to different types of electronics town
Flow the compatibility of device.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the circuit structure diagram of the traditional fluorescent lamp provided in background of invention；
Fig. 2 is the circuit structure diagram of the LED lamp tube provided in background of invention；
Fig. 3 is the structure chart for the power driving circuit that one embodiment of the invention provides；
Fig. 4 is the structure chart for the power driving circuit that one embodiment of the invention provides；
Fig. 5 is the structure chart for the LED lamp tube that one embodiment of the invention provides；
Fig. 6 is the structure chart for the LED lamp tube that one embodiment of the invention provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 3 shows the structure chart for the power driving circuit that one embodiment of the invention provides, as shown in figure 3, the power supply drives
Dynamic circuit 10 includes：First voltage input terminal, second voltage input terminal, the first simulation filament 111, second simulate filament 112, height
Circuit passband 12, control circuit 13, isolation circuit 14, the first rectification circuit 151 and DC converting filter circuit 16, wherein, first
The voltage output end connection of voltage input end, second voltage input terminal and electric ballast, the electric ballast are common for market
Fluorescent lamp in use electric ballast.First voltage input terminal includes the first zero line A and the first zero line side B, the first simulation
Filament 111 is connected with the first zero line A and the first zero line side B, and second voltage input terminal includes the second zero line A1 and the 2nd 0
Line end B1, the second simulation filament 112 are connected with the second zero line A1 and the second zero line side B1, the first simulation filament 111 and second
Simulation filament 111 is mainly used for photoinduced electron ballast output high voltage；First simulation filament 111 and second simulates filament
111 can be resistance etc., and in this preferable implementation, the first simulation filament 111 and second is simulated filament 111 and insured for self- recoverage
Silk, if under alternate current states, since input voltage energy is larger, resettable fuse moment is blown, when not in use,
Resettable fuse can also recover automatically, go the output of photoinduced electron ballast high using resettable fuse as simulation filament
Frequency voltage, improves compatibility of the circuit to different types of electric ballast.
The first input end of control circuit 13 passes through the first zero line A of high pass circuit 12 and first voltage input terminal and the
One zero line side B connections, wherein, high pass circuit 12 is connected with the first zero line A and the first zero line side B respectively, and the of control circuit
Two input terminals are connected with second voltage input terminal, the first zero line A, the first zero line side B and the connection of isolation circuit 14, the second fire
Line end A1 and the second zero line side B1 are also connected with isolation circuit, and high pass circuit 12 is used to hinder low-frequency voltage, such as electric main, its
Frequency is about 50Hz/60Hz, and electric main cannot then pass through the high pass circuit 12；But the voltage of electric ballast output is
High frequency voltage, then can pass through the high pass circuit 12.Control circuit 13 is also connected with isolation circuit 14, when high frequency voltage passes through height
During circuit passband 12, control circuit 13 obtains voltage and starts to start work, and control circuit 13 is used to control isolation circuit 14 by first
Zero line A and the first zero line side B connects with the first voltage output terminal of isolation circuit 14, by the second zero line A1 and the second zero curve
End B1 is connected with the second voltage output terminal of isolation circuit 14；The first voltage output terminal of isolation circuit 14, second voltage output
End is connected with the first rectification circuit 15, and the first rectification circuit 15 is used for the first voltage output terminal of isolation circuit 14, the second electricity
The alternating current of pressure output terminal output is converted into direct current；DC converting filter circuit 16 is connected with the first rectification circuit 15, is used for
Exported after DC power conversion is filtered as driving voltage, which can be used for driving load and work, such as drive LED
Lamp luminescence etc., wherein DC converting filter circuit 16 include DC/DC converters and filter circuit.Therefore above-mentioned power drives electricity
Road 10 can be used under the voltage mode of the output of electric ballast, and simulation filament uses resettable fuse so that should
Power driving circuit 10 can compatible more different types of electric ballasts.It is nothing for high frequency voltage as electric main
Method is by high pass circuit 12, and therefore, when first voltage input terminal is low-frequency voltage, control circuit 13 does not work, isolation circuit
13 cause the first zero line and the first zero line side and the first voltage output terminal of isolation circuit 14 to be off, isolation circuit
14 cause the second zero line and the second zero line side and the second voltage output terminal of isolation circuit 14 to be off, therefore the electricity
Source driving circuit can meet the Hi-pot test in safety by the Hi-pot test of 1500V；Electric leakage current test in safety at the same time
It is to connect 220V alternating currents in first voltage input terminal, second voltage input end grounding line carries out electric leakage current test, and 220V is handed over
Galvanic electricity is low-frequency voltage, and isolation circuit 14 is so that the first zero line and the first zero line side and the first voltage of isolation circuit 14 export
End is off, and isolation circuit 14 is so that the second zero line and the second zero line side and the second voltage of isolation circuit 14 export
End is off, therefore the power driving circuit can also meet the electric leakage current test in safety so that is driven using the source
Dynamic electric circuit electronics technical product is safer.
Preferably, in the embodiment of the present invention, power driving circuit 10 further includes the second rectification circuit 152, the second rectified current
The voltage input end on road 152 is connected with first voltage input terminal, i.e., with the first zero line A of first voltage input terminal and the 1st
Line end B connections, the voltage output end of the second rectification circuit 152 are connected with DC converting filter circuit 16, DC converting filtered electrical
Exported after the DC power conversion filtering that road 16 is used to export the second rectification circuit 152 as driving voltage, which can
To work for driving load, such as driving LED lamp tube shines, wherein, first voltage input terminal is connected with electric main, the
When one voltage input end is directly accessed electric main, since the input voltage energy of electric main is larger, simulation filament 111 uses
Resettable fuse moment be blown, electric main becomes direct current by the second rectification circuit 152, by DC converting
Exported after the conversion filtering of filter circuit 16 as driving voltage.Since electric main is low-frequency voltage, high pass cannot be passed through
Circuit 12, control circuit 13 and isolation circuit 14 are in off position, therefore are output to without going past the first rectification circuit 151
DC converting filter circuit 16.Therefore, include the power driving circuit of the second rectification circuit 152, exchange city can also be operated in
Under the pattern of electricity.
Fig. 4 shows the structure chart for the power driving circuit that one embodiment of the invention provides, as shown in figure 4, the power supply drives
Dynamic circuit includes：First voltage input terminal, second voltage input terminal, the first simulation filament 111, second simulate filament 112, high pass
Circuit 12, control circuit 13, isolation circuit 14, the first rectification circuit 151, the second rectification circuit 152, DC converting filter circuit
16 and protection circuit 17, wherein, the voltage output end of first voltage input terminal, second voltage input terminal and electric ballast connects
Connect, which is to use electric ballast in the common fluorescent lamp in market.First voltage input terminal includes the first firewire
A and the first zero line side B are held, the first simulation filament 111 is connected with the first zero line A and the first zero line side B, second voltage input terminal
Including the second zero line A1 and the second zero line side B1, the second simulation filament 112 and second zero line A1 and the second zero line side B1 companies
Connect, the first simulation filament 111 and second simulates filament 111 and is mainly used for photoinduced electron ballast output high voltage；First mould
Intending the simulation of filament 111 and second filament 111 can be with resistance etc., in this preferable implementation, the first simulation 111 and second mould of filament
Plan filament 111 is resettable fuse P1 and resettable fuse P2, if under alternate current states, due to input voltage energy
To measure larger, resettable fuse P1 and resettable fuse P2 moments are blown, when not in use, resettable fuse P1 and from extensive
Double insurance silk P2 can also recover automatically, go photoinduced electron ballast to export high frequency using resettable fuse as simulation filament
Voltage, improves compatibility of the circuit to different types of electric ballast, reduces the fraction defective of the power circuit.
High pass circuit 12 includes the first capacitance C1 and the second capacitance C2, and one end of the first capacitance C1 connects with the first zero line side B
Connect, the other end is connected with one end of the second capacitance C2, the other end of the second capacitance C2 is connected with the first zero line A, high pass circuit
12 are used to hinder low-frequency voltage and logical high frequency voltage, and for low-frequency voltage such as electric main, high frequency voltage such as electric ballast is defeated
The voltage gone out, more than 50KHz.The of the second end and the second capacitance C2 of the first input end of control circuit 13 and the first capacitance C1
One end connects, and the second input terminal of control circuit 13 is connected with the second zero line A1；Control circuit includes the first diode D1, the
Two diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, first resistor R1 and the 3rd capacitance C3；First
Diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 composition rectifier bridges, the first of the rectifier bridge
End in order to control the first input end of circuit 13, be connected with the first zero line A and the first zero line side B by high pass circuit 12, rectification
The second end of electric bridge in order to control the second input terminal of circuit 13, be connected with second voltage input terminal, the 3rd end of the rectifier bridge
It is connected by first resistor R1 with the anode of the 5th diode D5, the 4th end of the rectifier bridge and the cathode of the 5th diode D5
Connection, the first end of the 3rd capacitance C3 is connected with the anode of the 5th diode D5, the second end of the 3rd capacitance C3 and the five or two pole
The cathode connection of pipe D5.Isolation circuit 14 includes controllable switch, and controllable switch controls its switch by control circuit 13.At this preferably
Embodiment in, it is controllable to open the light including the first relay SW1 and the second relay SW2, in this preferred embodiment, first after
Electric appliance SW1 and the second relay SW2 can also use other connection modes using being connected in series.First relay SW1 and second after
Electric appliance SW2 includes the first contact 1, the second contact 2, the 3rd contact 3, the 4th contact 4, the 5th contact 5 and the 6th contact 6, its
In, inductance coil, the second contact 2 and the voltage output end of control circuit 13 are connected between the first contact 1 and the second contact 2 and is connected
Connect, i.e. the second contact 2 of the first relay SW1 is connected with the first end of the 3rd capacitance C3, the second contact of the second relay SW2
2 are connected with the second end of the 3rd capacitance C3, the first contact 1 of the first relay SW1 and the first contact 1 of the second relay SW2
Connection, control circuit 13 are used for the 3rd contact 3 and the by the first relay SW1 of inductance coil control, the second relay SW2
The conducting and disconnection of six contacts 6, the 4th contact 4 and the 5th contact 5；Wherein, the first zero line A, the first zero line side B are respectively with
The 4th contact 4, the 3rd contact 3 of one relay SW1 connects, and the 5th contact 5 and the 6th contact 6 of the first relay SW1 connect
First voltage output terminal as isolation circuit 14 afterwards；Second zero line A1, the second zero line side B1 respectively with the second relay SW
The 3rd contact 3, the 4th contact 4 connect, the 5th contact 5 of the second relay SW2 and the 6th contact 6 connection after as isolation electricity
The second voltage output terminal on road 14.When first voltage input terminal is connected with second voltage input terminal with electric ballast, from extensive
Double insurance silk P1 and resettable fuse P2 photoinduced electron ballast output high voltages, high frequency voltage pass through high pass circuit 12
Afterwards, excitation control circuit 13 controls isolation circuit 14 to close the first relay SW1 and the second relay SW2 so that the first relay
Device SW1, the 3rd contact 3 of the second relay SW2 and the 6th contact 6, the 4th contact 4 and the 5th contact 5 are in the conduction state, from
And cause the first zero line A and the first zero line side B connected with the first voltage output terminal of isolation circuit 14, the second zero line A1 and
Second zero line side B1 is connected with the second voltage output terminal of isolation circuit 14；Isolation circuit 14 by first voltage output terminal and
Second voltage output terminal is connected with the first rectification circuit 151, and the first rectification circuit 151 is by four diodes (diode D6, two
Pole pipe D7, diode D8 and diode D9) and the 4th capacitance C4 composition rectifier bridge, two voltages of the first rectification circuit 151
Output terminal is connected with DC converting filter circuit 16, and DC converting filter circuit 16 is used for export the first rectification circuit 151
DC power conversion filtering after as driving voltage export, i.e., by DC converting filter circuit 16 two voltage output end LED+ and
LED- is exported.Second rectification circuit 152 is also by four diodes (diode D10, diode D11, diode D12 and two poles
Pipe D13) and the 4th capacitance C5 compositions rectifier bridge, two voltage input ends of the second rectification circuit 152 and the first zero line A,
First zero line side B connections, two voltage output ends of the second rectification circuit 152 are connected with DC converting filter circuit 16, and direct current becomes
Filter circuit 16 is changed to be used for after the DC power conversion filtering that exports the second rectification circuit 151 as driving voltage output, i.e., by
The two voltage output end LED+ and LED- outputs of DC converting filter circuit 16, wherein, the first zero line A and the first zero line side B
It is electric main connection, the second rectification circuit 152 is that electric main is converted into direct current.
Due to electric main can not by high pass circuit 12, when first voltage input terminal is low-frequency voltage, control
Circuit 13 does not work, and two relays (SW1 and SW2) of isolation circuit 13 are in normally opened state, therefore power drives electricity
Road can meet the Hi-pot test in safety by the Hi-pot test of 1500V；The electric leakage current test in safety is first at the same time
Voltage input end connects 220V alternating currents, and second voltage input end grounding line carries out electric leakage current test, and 220V alternating currents are low
Frequency voltage, two relays (SW1 and SW2) of isolation circuit 13 are in normally opened state, therefore the power driving circuit
It can also meet the electric leakage current test in safety so that safer using the source driving circuit electronic product.
Additionally, it is preferred that, in the embodiment of the present invention, which further includes a protection circuit 17, protects circuit
17 are connected to first voltage input terminal, for protecting the power driving circuit；Protection circuit 17 includes：The electricity of fuse F1 and the 6th
Holding C6, fuse F1 one end is connected with the first zero line A or the first zero line side B, the other end is connected with the 6th capacitance C6 one end, the
The other end of six capacitance C6 is connected with the first zero line side B or the first zero line A.Power driving circuit further includes the 7th capacitance C7,
The both ends of 7th capacitance C7 are connected with the second zero line A1 or the second zero line side B1, and the 7th capacitance plays filter stabilization.
To sum up, above-mentioned different embodiment can be seen that the power driving circuit and can be applied to electric main, while simultaneous
Hold electric ballast, i.e., provide voltage by electric ballast；The design of high pass circuit, control circuit and isolation circuit so that should
Power driving circuit meets electric leakage current test and voltage-withstand test in safety；In addition, the first simulation filament and the second simulation filament
Using resettable fuse, compatibility of the power driving circuit to different types of electric ballast is more improved, due to
In the present embodiment, as long as the design of the power driving circuit can be completed using simple electronic component, further drop
Low power driving circuit cost, while also reduce the cost of the electronic product using power driving circuit.
Fig. 5 shows the structure chart for the LED lamp tube that one embodiment of the invention provides, as shown in figure 5, the LED lamp tube 1 is wrapped
Include：Power driving circuit 10, LED lamp panel 30, the first lamp pin 101 and the second lamp pin 102, power driving circuit 10 are above-mentioned implementation
Power driving circuit in example, first voltage input terminal A, B of the power driving circuit are connected with the first lamp pin 101, the second electricity
Pressure input terminal A1, B1 are connected with the second lamp pin 102, which be operated under the pattern that electric ballast provides voltage,
First lamp pin 101 and the second lamp pin 102 are connected with two voltage output ends of electric ballast 20 respectively, electric ballast 20 it is defeated
Enter high frequency voltage, after power driving circuit 10, LED lamp panel 30 can be driven to shine.
The LED lamp tube 1 can also be operated under the pattern of electric main, as shown in fig. 6, working as voltage input end L, N and friendship
When flowing city's electrical connection, electric main is low-frequency voltage, after power driving circuit 10, LED lamp panel 30 can be driven to shine.
To sum up, from above-described embodiment as can be seen that the LED lamp tube not only can be operated in electronics with compatible electronic ballast
Ballast is provided under the pattern of voltage, can also use the embodiment of Fig. 3 and Fig. 4 under the powering mode of work exchange alternating current
The power driving circuit of middle offer so that the LED lamp tube also meets electric leakage current test and voltage-withstand test in safety, in addition, also
The compatibility to different types of electric ballast is improved, as long as since this can be completed using simple electronic component
The design of power driving circuit, therefore, also reduces the cost of the LED lamp tube using power driving circuit.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (2)
- A kind of 1. power driving circuit, it is characterised in that including：First voltage input terminal, second voltage input terminal, the first simulation Filament, the second simulation filament, high pass circuit, control circuit, isolation circuit, the first rectification circuit and DC converting filter circuit, Wherein, the voltage output end connection of the first voltage input terminal, second voltage input terminal and electric ballast；The first voltage input terminal includes the first zero line and the first zero line side, the first simulation filament and the described first fire Line end and the connection of the first zero line side, the second voltage input terminal include the second zero line and the second zero line side, second mould Intend filament to be connected with second zero line and the second zero line side, the first simulation filament and the second simulation filament are used to induce The electric ballast output high voltage；The first input end of the control circuit is connected by the high pass circuit with first zero line and the first zero line side, Second input terminal of the control circuit is connected with the second voltage input terminal, first zero line, the first zero line side and Second zero line, the second zero line side are also connected with the isolation circuit；The control circuit is also connected with the isolation circuit, when the high frequency voltage is by the high pass circuit, the control Circuit processed is used to control the isolation circuit by first zero line and the first zero line side and the first electricity of the isolation circuit Pressure output terminal connects, connects second zero line and the second zero line side with the second voltage output terminal of the isolation circuit；First rectification circuit is connected with first voltage output terminal, the second voltage output terminal of the isolation circuit, for inciting somebody to action Alternating current is converted into direct current；The DC converting filter circuit is connected with first rectification circuit, for using the DC power conversion filter after as Driving voltage exports；The first simulation filament, the second simulation filament are resettable fuse；The power driving circuit further includes the second rectification circuit, the voltage input end of second rectification circuit and described first Voltage input end connects, and the voltage output end of second rectification circuit is connected with the DC converting filter circuit, described straight Rheology changes filter circuit and is used to export as driving voltage after the DC power conversion filtering using second rectification circuit output, its In, the first voltage input terminal is connected with electric main；The high pass circuit includes the first capacitance and the second capacitance, and the first end of first capacitance connects with first zero line side Connect, second end is connected with the first end of second capacitance, the second end of second capacitance is connected with first zero line；The control circuit includes the first diode, the second diode, the 3rd diode, the 4th diode, the 5th diode, the One resistance and the 3rd capacitance；First diode, the second diode, the 3rd diode and the 4th diode composition rectifier bridge, the rectifier bridge First end for the control circuit first input end, pass through the high pass circuit and first zero line and the first zero curve End connection, the second end of the rectifier bridge connect for the second input terminal of the control circuit, with the second voltage input terminal Connect, the 3rd end of the rectifier bridge is connected by the first resistor with the anode of the 5th diode, the rectified current 4th end of bridge is connected with the cathode of the 5th diode, and the first end of the 3rd capacitance connects with the anode of the 5th diode Connect, second end is connected with the cathode of the 5th diode；The isolation circuit includes controllable switch, and the controllable switch controls its on or off by the control circuit；The controllable switch includes the first relay and the second relay, and first relay and the second relay include the One contact, the second contact, the 3rd contact, the 4th contact, the 5th contact and the 6th contact；First relay, the second relay the first contact and the second contact between connected by inductance coil, it is described Second contact of the first relay is connected with the first end of the 3rd capacitance, the second contact of second relay with it is described The second end connection of 3rd capacitance, the first contact of first relay and the first contact portion of second relay；The control circuit be used for by the inductance coil control first relay, the second relay the 3rd contact and The conducting and disconnection of 6th contact, the 4th contact and the 5th contact；Wherein, the 3rd contact with first relay, the 4th contact connect respectively for first zero line, the first zero line side Connect, the first voltage behind the 5th contact of first relay and the 6th contact portion as the isolation circuit exports End；Second zero line, the second zero line side the 3rd contact with second relay, the 4th contact portion respectively, it is described Second voltage output terminal behind 5th contact of the second relay and the 6th contact portion as the isolation circuit.
- 2. a kind of LED lamp tube, it is characterised in that the LED lamp tube includes a kind of power driving circuit described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610332938.2A CN105813274B (en) | 2016-05-17 | 2016-05-17 | A kind of power driving circuit and LED lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610332938.2A CN105813274B (en) | 2016-05-17 | 2016-05-17 | A kind of power driving circuit and LED lamp tube |
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| Publication Number | Publication Date |
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| CN105813274A CN105813274A (en) | 2016-07-27 |
| CN105813274B true CN105813274B (en) | 2018-05-15 |
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| CN201610332938.2A Expired - Fee Related CN105813274B (en) | 2016-05-17 | 2016-05-17 | A kind of power driving circuit and LED lamp tube |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106413182B (en) * | 2016-08-31 | 2021-06-08 | 惠州市时宇虹光电科技有限公司 | LED light source drive control device compatible with mains supply and ballast input |
| CN106385733B (en) * | 2016-10-13 | 2018-02-27 | 厦门阳光恩耐照明有限公司 | The LED daylight lamp drive circuit of compatible electronic formula, inductance type and alternating current |
| CN106658845B (en) * | 2016-12-20 | 2018-07-03 | 深圳市福瑞新科技有限公司 | The full compatible with LED driving power circuit of intelligence |
| CN106658928A (en) * | 2017-01-05 | 2017-05-10 | 惠州市时宇虹光电科技有限公司 | LED light source drive control circuit for electronic ballast input |
| CN106870974B (en) * | 2017-03-01 | 2020-08-11 | 深圳驰迅科技有限公司 | Multifunctional compatible lamp tube |
| CN109526093A (en) * | 2018-03-26 | 2019-03-26 | 漳州立达信灯具有限公司 | LED light tube drive circuit and LED illumination device |
| CN110557868B (en) * | 2019-09-19 | 2024-04-05 | 横店集团得邦照明股份有限公司 | Lamp tube compatible with high frequency and power frequency and implementation method thereof |
| CN111542147A (en) * | 2020-06-01 | 2020-08-14 | 厦门普为光电科技有限公司 | Lamp tube with electric shock protection and compatible electronic ballast and power frequency AC power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7800928B1 (en) * | 2007-12-06 | 2010-09-21 | Universal Lighting Technologies, Inc. | Method of operating a resonant inverter using zero current switching and arbitrary frequency pulse width modulation |
| CN203814028U (en) * | 2014-03-30 | 2014-09-03 | 无锡中云飞通城市智能科技有限公司 | Fluorescent lamp electronic ballast controlled by power line carrier waves |
| CN204377221U (en) * | 2015-02-06 | 2015-06-03 | 深圳市豪恩光电照明有限公司 | The LED lamp tube driver of compatible electronic ballast |
| CN104640322B (en) * | 2015-02-06 | 2017-11-28 | 深圳市豪恩光电照明股份有限公司 | The LED lamp tube driver of compatible electronic ballast |
| CN205596413U (en) * | 2016-05-17 | 2016-09-21 | 深圳市宝瑞恒业科技有限公司 | Power driving circuit and LED fluorescent tube |
-
2016
- 2016-05-17 CN CN201610332938.2A patent/CN105813274B/en not_active Expired - Fee Related
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| CN105813274A (en) | 2016-07-27 |
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