CN207070411U - A kind of LED lamp drive circuit of compatible civil power and Metal halogen lamp ballast - Google Patents
A kind of LED lamp drive circuit of compatible civil power and Metal halogen lamp ballast Download PDFInfo
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- CN207070411U CN207070411U CN201720981689.XU CN201720981689U CN207070411U CN 207070411 U CN207070411 U CN 207070411U CN 201720981689 U CN201720981689 U CN 201720981689U CN 207070411 U CN207070411 U CN 207070411U
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses the LED lamp drive circuit of a kind of compatible civil power and Metal halogen lamp ballast, it includes being used to absorb instantaneous high pressure caused by Inductive ballast used in Metal halogen lamp or absorbs the pressure limited protection circuit of caused electromagnetic interference in mains electricity, for the current rectifying and wave filtering circuit by AC conversion into the direct current of pulsation, the BUCK circuits that the direct current for the pulsation that can be raised the output voltage of Inductive ballast with high impedance and can be exported to current rectifying and wave filtering circuit is depressured, the output end connection of the input of pressure limited protection circuit and the output end of Inductive ballast or mains electricity, the output end of pressure limited protection circuit and the input of current rectifying and wave filtering circuit connect, the output end of current rectifying and wave filtering circuit is connected with the input of BUCK circuits, the output end of BUCK circuits and the LED load of LED connect；Advantage is can directly to replace Metal halogen lamp using the LED of the drive circuit, and and can is directly accessed civil power use.
Description
Technical field
A kind of drive circuit is the utility model is related to, more particularly, to a kind of compatible civil power and the LED of Metal halogen lamp ballast
Lamp drive circuit.
Background technology
Gas-discharge lamp is the lamp for mixing electric discharge with metallic vapour by gas, metallic vapour or gas and lighting.Metal halogen lamp
One kind in gas-discharge lamp, its be in mercury and rare metal halide mixed vapour produce arc discharge and it is luminous
Lamp.Lighted because Metal halogen lamp needs high voltage startup to produce arc discharge, it is therefore desirable to an external electricity that can produce high pressure
Feel ballast, the circuit theory diagrams of Inductive ballast are as shown in Figure 1.Although Metal halogen lamp has luminous efficiency height, long lifespan etc. excellent
Point, but still suffer from and start time length, the shortcomings of containing mercury pollution.With the fast development of LED technology, LED light effect constantly carries
The advantages of high and LED energy-saving and environmental protection, LED will gradually substitute Metal halogen lamp.In order to save alternative costs, it usually needs LED
Directly replaced on the basis of the external Inductive ballast of Metal halogen lamp.For example, Chinese invention disclosed patent application is " a kind of
High-power LED mine lamp " (application number：201510898123.6 publication number：CN105333322A), it includes lamp holder, hollow
Power storehouse, driving power, lampshade, LED light source board and lens, drive circuit is provided with driving power, and drive circuit includes driving
Moving cell and LED luminescence units, the input of driver element and the output end of ballast are electrically connected with, the output end of driver element
Be electrically connected with LED luminescence units, feature is that drive circuit also includes voltage-limiting protection unit, the input of voltage-limiting protection unit and
The output end of ballast is electrically connected with, and the output end of voltage-limiting protection unit and the input of driver element are electrically connected with.The big work(
Rate LED bay light sets voltage-limiting protection unit in the driving circuit, can effectively prevent that this is high-power by the voltage-limiting protection unit
There are the unsafe conditions such as strike sparks, smolder in the case of open circuit in LED bay light so that the high-power LED mine lamp is can
, being capable of safety and stability use on the premise of effectively replacing high-intensity gas discharge lamp such as Metal halogen lamp.But due to civil power and golden halogen
The voltage and current that Inductive ballast used in lamp exports is different from, therefore the high-power LED mine lamp can not directly connect
Enter civil power use, limit the use range of the high-power LED mine lamp.Being capable of compatible civil power therefore, it is necessary to study one kind
With Metal halogen lamp used in Inductive ballast drive circuit, can also be directly accessed city using to replace the LED of Metal halogen lamp
Electricity uses.
The content of the invention
The LED that technical problem to be solved in the utility model is to provide a kind of compatible civil power and Metal halogen lamp ballast is driven
Dynamic circuit, its is simple in construction, and can directly replace Metal halogen lamp using the LED of the drive circuit, and and can is directly accessed civil power
Use.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of compatible civil power and Metal halogen lamp ballast
The LED lamp drive circuit of device, it is characterised in that：Including instantaneous high caused by Inductive ballast used in Metal halogen lamp for absorbing
Pressure absorbs the pressure limited protection circuit of caused electromagnetic interference in mains electricity, for the direct current by AC conversion into pulsation
Electricity current rectifying and wave filtering circuit, have high impedance can make described Inductive ballast output voltage raise and can be to described rectification
The BUCK circuits of the direct current decompression of the pulsation of filter circuit output, the input of described pressure limited protection circuit and described electricity
Feel the output end of ballast or the output end connection of mains electricity, the output end of described pressure limited protection circuit with it is described whole
The input connection of filter circuit is flowed, the output end of described current rectifying and wave filtering circuit and the input of described BUCK circuits connect
Connect, the output end of described BUCK circuits and the LED load of LED connect.When the LED using the drive circuit is directly replaced
During Metal halogen lamp, Inductive ballast used in Metal halogen lamp is constant current output, output voltage with the impedance in circuit or resistance and
Become, during without BUCK circuits, output voltage is determined by the resistance or impedance of LED load, when increasing BUCK circuits, due to BUCK
The impedance of circuit is more than LED load, therefore the output voltage of Inductive ballast depends on BUCK circuits, voltage rise, passes through limit
Direct current is exported after voltage protection circuit and current rectifying and wave filtering circuit to BUCK circuits, LED load is exported after the decompression of BUCK circuits
Operating voltage, light LED load；When being directly accessed civil power using the LED of the drive circuit, mains electricity input
To pressure limited protection circuit, instantaneous high pressure will not be produced due to being directly accessed civil power, now pressure limited protection circuit is mainly used in removing
Electromagnetic interference in circuit, direct current is then exported after current rectifying and wave filtering circuit, then LED is exported after the decompression of BUCK circuits
The operating voltage of load, lights LED load.
Described BUCK circuits are made up of the 4th filter capacitor, decompression control chip and chip periphery circuit, described drop
Contain switching tube in pressure control chip, the regulation dutycycle realization of described switching tube is depressured and constant current output, outside described chip
Enclosing circuit includes the 5th power supply capacitor, the second current sense resistor, the 3rd current sense resistor, the first inductance, the first afterflow two
Pole pipe, first resistor, the 6th electrochemical capacitor, one end of the 4th described filter capacitor respectively with described current rectifying and wave filtering circuit
Cathode output end is connected with the positive pole of described LED load, and the other end of the 4th described filter capacitor is filtered with described rectification
The cathode output end connection of wave circuit, i.e., the 4th filter capacitor is connected in parallel in the cathode output end and negative pole of current rectifying and wave filtering circuit
Between output end, the 1st pin of described decompression control chip passes through the 5th described power supply capacitor and the 4th described filtered electrical
The other end connection of appearance, the 2nd pin of described decompression control chip pass through the second described current sense resistor for being connected in parallel
It is connected with the 3rd described current sense resistor with the other end of the 4th described filter capacitor, the 4th described filter capacitor,
The public connecting end of described the 5th power supply capacitor, the second described current sense resistor and the 3rd described current sense resistor
Ground connection, the 3rd pin of described decompression control chip are connected by the first described inductance with the negative pole of described LED load, institute
3rd pin of the decompression control chip stated is connected with the positive pole of the first described fly-wheel diode, the first described fly-wheel diode
Negative pole be connected with the positive pole of described LED load, the connection end of described the first inductance and the negative pole of described LED load leads to
The positive pole that described first resistor is crossed with described LED load is connected, the first described inductance and the negative pole of described LED load
Connection end be connected with the negative pole of the 6th described electrochemical capacitor, the positive pole of the 6th described electrochemical capacitor is born with described LED
The positive pole connection of load.Here, the 5th power supply capacitor provides operating voltage for decompression control chip, decompression control chip both ends are maintained
Voltage；Contain switching tube in decompression control chip, dutycycle is adjusted by switching tube to realize decompression and constant current output；Second
Current sense resistor and the 3rd current sense resistor detect the size of current in BUCK circuits and feed back to decompression control chip, lead to
Decompression control chip controlling switch pipe is crossed to be turned on or off；First inductance is that LED load partial pressure realizes decompression by itself induction reactance；
6th electrochemical capacitor is filtered to obtain the direct current electricity output of ripple-free to LED load.Here, the arteries and veins after rectified filter circuit
Dynamic direct current first passes through the 4th filter capacitor and further filtered after entering BUCK circuits, the direct current of pulsation is become stable
Direct current, then by LED load, then output is to decompression control chip after the first inductance, by with being depressured control chip
Second current sense resistor of connection and the 3rd current sense resistor ground connection.When switching tube turns on, electric current flows through the first inductance,
First induction charging energy storage, when electric current reaches the peak point current of the first inductance, the second current sense resistor and the inspection of the 3rd electric current
Measuring resistance detects that the electric current in BUCK circuits reaches maximum, disconnects switching tube, and now the first inductance passes through the first afterflow
Diode is powered to LED load, up to the current reduction in the first inductance to valley, the second current sense resistor and the 3rd electric current
Detection resistance detects that the electric current in BUCK circuits reaches minimum value, turns on switching tube, so turns on and disconnects in switching tube
Each cycle in, the peak point current and the half of valley point current sum that flow through the electric current of LED load all for the first inductance can be real
Existing constant current output.
Described current rectifying and wave filtering circuit is made up of rectifier bridge stack and the 3rd filter capacitor, and the positive pole of described rectifier bridge stack is defeated
Enter electrode input end of the end for described current rectifying and wave filtering circuit, the negative input of described rectifier bridge stack is filtered for described rectification
The negative input of wave circuit, the cathode output end of described rectifier bridge stack are connected with the positive pole of the 3rd described filter capacitor,
And its public connecting end is the cathode output end of described current rectifying and wave filtering circuit, the cathode output end of described rectifier bridge stack and institute
The negative pole connection for the 3rd filter capacitor stated, and its public connecting end is the cathode output end of described current rectifying and wave filtering circuit.
Described pressure limited protection circuit is made up of the first safety electric capacity, one end of the first described safety electric capacity with it is described
The cathode output end connection of cathode output end or the mains electricity of Inductive ballast, and with described current rectifying and wave filtering circuit just
Pole input connection, the cathode output end or civil power of the other end of the first described safety electric capacity and described Inductive ballast are handed over
The cathode output end connection of stream electricity, and be connected with the negative input of described current rectifying and wave filtering circuit.The pressure limited protection circuit knot
Structure is simple, and when being connected with Inductive ballast, the first safety electric capacity forms path with Inductive ballast, in the feelings of LED open circuit
The first safety electric capacity is used for instantaneous high pressure caused by absorption inductor ballast under condition, i.e., by the first safety electric capacity by inductance ballast
The high pressure that device is likely to occur in the case where LED is opened a way eliminates, and the voltage at only the first safety electric capacity both ends puts on LED
On lamp, so as to be effectively guaranteed the safe handling of LED；When being electrically connected with mains, the first safety electric capacity is used for inhaling
Close caused electromagnetic interference in electric alternating current.Here, the consideration based on safety, EMC etc., selects the high safety of proof voltage
Electric capacity, and safety electric capacity also has the function that filtering, can filter out high frequency spurs.
The cathode output end or city that one end of the first described safety electric capacity passes through fuse and described Inductive ballast
The cathode output end connection of electric alternating current, set fuse can prevent Inductive ballast or mains electric-opening moment produce compared with
Big electric current has an impact to follow-up component.
Described pressure limited protection circuit is made up of the first safety electric capacity and the second safety electric capacity, the first described safety electric capacity
It is connected in parallel with the second described safety electric capacity, a parallel connection of the first described safety electric capacity and the second described safety electric capacity
Hold the cathode output end with the cathode output end or mains of described Inductive ballast electricity to be connected, and filtered with described rectification
The electrode input end connection of wave circuit, another parallel connected end of the first described safety electric capacity and the second described safety electric capacity with
The cathode output end connection of cathode output end or the mains electricity of described Inductive ballast, and it is electric with described rectifying and wave-filtering
The negative input connection on road.The pressure limited protection circuit is simple in construction, when being connected with Inductive ballast, the first safety electric capacity and
Second safety electric capacity forms path with Inductive ballast, the first safety electric capacity and the second safety electricity in the case where LED is opened a way
Appearance is used for instantaneous high pressure caused by absorption inductor ballast, i.e., by the first safety electric capacity and the second safety electric capacity by inductance ballast
The high pressure that device is likely to occur in the case where LED is opened a way eliminates, only the first safety electric capacity and the second safety electric capacity both ends
Voltage put in LED, so as to be effectively guaranteed the safe handling of LED；When being electrically connected with mains, first
Safety electric capacity and the second safety electric capacity are used for absorbing caused electromagnetic interference in mains electricity.Here, based on safety, EMC etc.
The consideration of aspect, the high safety electric capacity of proof voltage is selected, and safety electric capacity also has the function that filtering, can be by high frequency spurs mistake
Filter.Here, using two safety electric capacity, be in order at insurance and consider, once one of safety condenser failure, then another pacify
Rule electric capacity can play same effect.
Described the first safety electric capacity and a parallel connected end of the second described safety electric capacity by fuse with it is described
The cathode output end connection of cathode output end or the mains electricity of Inductive ballast, sets fuse to prevent Inductive ballast
Or mains electric-opening moment produces larger electric current and follow-up component is had an impact.
Compared with prior art, the utility model has the advantage of：By increasing a BUCK circuit, and it is arranged at rectification
Between filter circuit and LED load, BUCK circuits have high impedance, can make the output electricity of Inductive ballast used in Metal halogen lamp
Pressure rise, while BUCK circuits are a reduction voltage circuits, output voltage or the mains electricity of elevated Inductive ballast pass through
The voltage that LED load can be made to work is exported after crossing the decompression of BUCK circuits, so as to reach the inductance ballast of compatible traditional Metal halogen lamp
The purpose of device and civil power, Metal halogen lamp can be directly replaced using the LED of the drive circuit, and can is directly accessed civil power use.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of Inductive ballast used in Metal halogen lamp；
Fig. 2 is the circuit diagram of LED lamp drive circuit of the present utility model；
Fig. 3 is the circuit diagram of the BUCK circuits in LED lamp drive circuit of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
The utility model proposes a kind of compatible civil power and Metal halogen lamp ballast LED lamp drive circuit, as shown in Fig. 2
It includes being used to absorb instantaneous high pressure caused by Inductive ballast used in Metal halogen lamp or absorbing caused by mains electricity
The pressure limited protection circuit 1 of electromagnetic interference, for by AC conversion into the direct current of pulsation current rectifying and wave filtering circuit 2, have height
What the direct current for the pulsation that impedance can raise the output voltage of Inductive ballast and can be exported to current rectifying and wave filtering circuit 2 was depressured
The output end connection of BUCK circuits 3, the input of pressure limited protection circuit 1 and the output end of Inductive ballast or mains electricity,
The output end of pressure limited protection circuit 1 is connected with the input of current rectifying and wave filtering circuit 2, the output end and BUCK of current rectifying and wave filtering circuit 2
The input connection of circuit 3, the output end of BUCK circuits 3 and the LED load 4 of LED connect.When using the drive circuit
When LED directly replaces Metal halogen lamp, Inductive ballast used in Metal halogen lamp is constant current output, and output voltage is with circuit
Impedance or resistance and become, during without BUCK circuits 3, output voltage is determined by the resistance or impedance of LED load 4, as increase BUCK
During circuit 3, because the impedance of BUCK circuits 3 is more than LED load 4, therefore the output voltage of Inductive ballast depends on BUCK electricity
Road 3, voltage rise, by exporting direct current after pressure limited protection circuit 1 and current rectifying and wave filtering circuit 2 to BUCK circuits 3, by BUCK
Circuit 3 exports the operating voltage of LED load 4 after being depressured, light LED load 4；When direct using the LED of the drive circuit
When accessing civil power, mains electricity input to pressure limited protection circuit 1, instantaneous high pressure will not be produced due to being directly accessed civil power, this
When pressure limited protection circuit 1 be mainly used in remove circuit in electromagnetic interference, then export direct current after current rectifying and wave filtering circuit 2
Electricity, then by BUCK circuits 3 decompression after export LED load 4 operating voltage, light LED load 4.
In the present embodiment, as shown in figure 3, BUCK circuits 3 are by the 4th filter capacitor C4, existing decompression control chip U1
And chip periphery circuit composition, decompression control chip U1 is interior to contain switching tube (not shown), and switching tube regulation dutycycle is real
Now decompression and constant current output, chip periphery circuit include the 5th power supply capacitor C5, the second current sense resistor R2, the inspection of the 3rd electric current
Measuring resistance R3, the first inductance L1, the first sustained diode 1, first resistor R1, the 6th electrochemical capacitor C6, the 4th filter capacitor C4
One end be connected respectively with the cathode output end of current rectifying and wave filtering circuit 2 and the positive pole of LED load 4, the 4th filter capacitor C4's is another
One end is connected with the cathode output end of current rectifying and wave filtering circuit 2, i.e., the 4th filter capacitor C4 is connected in parallel in current rectifying and wave filtering circuit 2
Between cathode output end and cathode output end, decompression control chip U1 the 1st pin (Vin pin) passes through the 5th power supply capacitor C5 and the
Four filter capacitor C4 other end connection, decompression control chip U1 the 2nd pin (CS pin) are examined by the second electric current being connected in parallel
Measuring resistance R2 and the 3rd current sense resistor R3 are connected with the 4th filter capacitor C4 other end, the 4th filter capacitor C4, the 5th
Power supply capacitor C5, the second current sense resistor R2 and the 3rd current sense resistor R3 public connecting end ground connection, decompression control core
Piece U1 the 3rd pin (Vout pin) is connected by the first inductance L1 with the negative pole of LED load 4, decompression control chip U1 the 3rd pin
(Vout pin) is connected with the positive pole of the first sustained diode 1, and the negative pole of the first sustained diode 1 connects with the positive pole of LED load 4
Connecing, the first inductance L1 is connected with the connection end of the negative pole of LED load 4 by first resistor R1 with the positive pole of LED load 4, and first
Inductance L1 is connected with the connection end of the negative pole of LED load 4 with the 6th electrochemical capacitor C6 negative pole, the 6th electrochemical capacitor C6 positive pole
It is connected with the positive pole of LED load 4.Here, the 5th power supply capacitor C5 provides operating voltage for decompression control chip U1, decompression is maintained
The voltage at control chip U1 both ends；Contain switching tube in decompression control chip U1, dutycycle is adjusted by switching tube to realize drop
Pressure and constant current output；Size of current in second current sense resistor R2 and the 3rd current sense resistor R3 detection BUCK circuits 3
And decompression control chip U1 is fed back to, it is turned on or off by being depressured control chip U1 controlling switch pipes；First inductance L1 passes through
Itself induction reactance is that the partial pressure of LED load 4 realizes decompression；6th electrochemical capacitor C6 is filtered to obtain the direct current electricity output of ripple-free extremely
LED load 4.Here, the direct current of the pulsation after rectified filter circuit 2 first passes through the 4th filtered electrical after entering BUCK circuits 3
Hold C4 further to filter, the direct current of pulsation is become stable direct current, then by LED load 4, then by the first inductance
Output passes through the electricity of the second current sense resistor R2 and the 3rd being connected with decompression control chip U1 to decompression control chip U1 after L1
Flow detection resistance R3 ground connection.When switching tube turns on, electric current flows through the first inductance L1, the first inductance L1 charging energy-storings, works as electric current
When reaching the first inductance L1 peak point current, the second current sense resistor R2 and the 3rd current sense resistor R3 detect BUCK electricity
Electric current in road 3 reaches maximum, disconnects switching tube, and now the first inductance L1 is born by the first sustained diode 1 to LED
4 power supplies are carried, up to the current reduction in the first inductance L1 to valley, the second current sense resistor R2 and the 3rd current sense resistor
R3 detects that the electric current in BUCK circuits 3 reaches minimum value, turns on switching tube, so turns on and disconnects each in switching tube
In cycle, the half of peak point current and valley point current sum of the electric current of LED load 4 all for the first inductance L1 is flowed through, can be achieved
Constant current output.
In the present embodiment, current rectifying and wave filtering circuit 2 is made up of rectifier bridge stack BD and the 3rd filter capacitor C3, rectifier bridge stack BD
Electrode input end be current rectifying and wave filtering circuit 2 electrode input end, rectifier bridge stack BD negative input is current rectifying and wave filtering circuit 2
Negative input, rectifier bridge stack BD cathode output end is connected with the 3rd filter capacitor C3 positive pole, and its public connecting end
For the cathode output end of current rectifying and wave filtering circuit 2, rectifier bridge stack BD cathode output end is connected with the 3rd filter capacitor C3 negative pole,
And its public connecting end is the cathode output end of current rectifying and wave filtering circuit 2.
In the present embodiment, pressure limited protection circuit 1 is made up of the first safety electric capacity C1 and the second safety electric capacity C2, the first peace
Rule electric capacity C1 and the second safety electric capacity C2 be connected in parallel, the first safety electric capacity C1 and the second safety electric capacity C2 a parallel connected end with
The cathode output end connection of cathode output end or the mains electricity of Inductive ballast, and it is defeated with the positive pole of current rectifying and wave filtering circuit 2
Enter end connection, the cathode output end of the first safety electric capacity C1 and the second safety electric capacity C2 another parallel connected end and Inductive ballast
Or the cathode output end connection of mains electricity, and be connected with the negative input of current rectifying and wave filtering circuit 2.The pressure limited protection circuit
1 is simple in construction, and when being connected with Inductive ballast, the first safety electric capacity C1 and the second safety electric capacity C2 are formed with Inductive ballast
Path, in the case where LED is opened a way, the first safety electric capacity C1 and the second safety electric capacity C2 produces for absorption inductor ballast
Instantaneous high pressure, i.e., situation about Inductive ballast being opened a way in LED by the first safety electric capacity C1 and the second safety electric capacity C2
Under the high pressure that is likely to occur eliminate, the voltage at only the first safety electric capacity C1 and the second safety electric capacity C2 both ends puts on LED
On lamp, so as to be effectively guaranteed the safe handling of LED；When being electrically connected with mains, the first safety electric capacity C1 and
Two safety electric capacity C2 are used for absorbing caused electromagnetic interference in mains electricity.Here, the consideration based on safety, EMC etc.,
The high safety electric capacity of proof voltage is selected, and safety electric capacity also has the function that filtering, can filter out high frequency spurs.Here,
Using two safety electric capacity, be in order at insurance and consider, once one of safety condenser failure, then another safety electric capacity can send out
Wave same effect.
In the present embodiment, the first safety electric capacity C1 and the second safety electric capacity C2 a parallel connected end pass through fuse FUSE
It is connected with the cathode output end of cathode output end or the mains electricity of Inductive ballast, sets fuse FUSE to prevent inductance
Ballast or mains electric-opening moment produce larger electric current and follow-up component are had an impact.
In the above-described embodiments, under the premise of ensuring that safety electric capacity is effective, pressure limited protection circuit 1 can be only by the first safety
Electric capacity C1 is formed, and the first safety electric capacity C1 one end is handed over by the cathode output end or civil power of fuse FUSE and Inductive ballast
The cathode output end connection of stream electricity, and be connected with the electrode input end of current rectifying and wave filtering circuit 2, the first safety electric capacity C1 other end
Be connected with the cathode output end of the cathode output end or mains of Inductive ballast electricity, and with the negative pole of current rectifying and wave filtering circuit 2
Input connects.The pressure limited protection circuit 1 is simple in construction, when being connected with Inductive ballast, the first safety electric capacity C1 and inductance
Ballast forms path, and in the case where LED is opened a way, the first safety electric capacity C1 is used for instantaneous caused by absorption inductor ballast
High pressure, i.e., the high pressure that Inductive ballast is likely to occur in the case where LED is opened a way is eliminated by the first safety electric capacity C1,
The voltage at only the first safety electric capacity C1 both ends is put in LED, so as to be effectively guaranteed the safe handling of LED；When
When being electrically connected with mains, the first safety electric capacity C1 is used for absorbing caused electromagnetic interference in mains electricity.Here, it is based on
Safety, EMC etc. consideration, the high safety electric capacity of proof voltage is selected, and safety electric capacity also has the function that filtering, can incite somebody to action
High frequency spurs filter out.Fuse FUSE is set to prevent Inductive ballast or mains electric-opening moment from producing larger electricity
Stream has an impact to follow-up component.
Claims (7)
- A kind of 1. LED lamp drive circuit of compatible civil power and Metal halogen lamp ballast, it is characterised in that：Including for absorbing Metal halogen lamp Instantaneous high pressure caused by used Inductive ballast or the voltage-limiting protection electricity for absorbing caused electromagnetic interference in mains electricity Road, for by AC conversion into the direct current of pulsation current rectifying and wave filtering circuit, have high impedance can make described inductance ballast The BUCK circuits that the output voltage rise of device and the direct current for the pulsation that can be exported to described current rectifying and wave filtering circuit are depressured, it is described The output end of output end or mains electricity of input and described Inductive ballast of pressure limited protection circuit be connected, it is described The output end of pressure limited protection circuit be connected with the input of described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit it is defeated Go out end to be connected with the input of described BUCK circuits, the output end of described BUCK circuits and the LED load of LED connect.
- 2. the LED lamp drive circuit of a kind of compatible civil power according to claim 1 and Metal halogen lamp ballast, its feature exist In：Described BUCK circuits are made up of the 4th filter capacitor, decompression control chip and chip periphery circuit, described decompression control Contain switching tube in chip, described switching tube regulation dutycycle realizes decompression and constant current output, described chip periphery circuit Including the 5th power supply capacitor, the second current sense resistor, the 3rd current sense resistor, the first inductance, the first fly-wheel diode, One resistance, the 6th electrochemical capacitor, one end of the 4th described filter capacitor are defeated with the positive pole of described current rectifying and wave filtering circuit respectively Go out end to connect with the positive pole of described LED load, the other end of the 4th described filter capacitor and described current rectifying and wave filtering circuit Cathode output end connection, the 1st pin of described decompression control chip passes through described the 5th power supply capacitor and the described the 4th The other end connection of filter capacitor, the 2nd pin of described decompression control chip are examined by the second described electric current being connected in parallel Measuring resistance and the 3rd described current sense resistor are connected with the other end of the 4th described filter capacitor, the described the 4th filtering Electric capacity, the 5th described power supply capacitor, the second described current sense resistor and the 3rd described current sense resistor it is public Connection end is grounded, and the 3rd pin of described decompression control chip is connected by the first described inductance and the negative pole of described LED load Connect, the 3rd pin of described decompression control chip is connected with the positive pole of the first described fly-wheel diode, the first described afterflow two The negative pole of pole pipe is connected with the positive pole of described LED load, the connection of the first described inductance and the negative pole of described LED load End is connected by described first resistor with the positive pole of described LED load, the first described inductance and described LED load The connection end of negative pole is connected with the negative pole of the 6th described electrochemical capacitor, the positive pole of the 6th described electrochemical capacitor with it is described The positive pole connection of LED load.
- 3. the LED lamp drive circuit of a kind of compatible civil power according to claim 1 or 2 and Metal halogen lamp ballast, its feature It is：Described current rectifying and wave filtering circuit is made up of rectifier bridge stack and the 3rd filter capacitor, the positive pole input of described rectifier bridge stack Hold as the electrode input end of described current rectifying and wave filtering circuit, the negative input of described rectifier bridge stack is described rectifying and wave-filtering The negative input of circuit, the cathode output end of described rectifier bridge stack are connected with the positive pole of the 3rd described filter capacitor, and Its public connecting end be described current rectifying and wave filtering circuit cathode output end, the cathode output end of described rectifier bridge stack with it is described The 3rd filter capacitor negative pole connection, and its public connecting end be described current rectifying and wave filtering circuit cathode output end.
- 4. the LED lamp drive circuit of a kind of compatible civil power according to claim 3 and Metal halogen lamp ballast, its feature exist In：Described pressure limited protection circuit is made up of the first safety electric capacity, one end of the first described safety electric capacity and described inductance The cathode output end connection of cathode output end or the mains electricity of ballast, and it is defeated with the positive pole of described current rectifying and wave filtering circuit Enter end connection, cathode output end or the mains electricity of the other end of the first described safety electric capacity and described Inductive ballast Cathode output end connection, and be connected with the negative input of described current rectifying and wave filtering circuit.
- 5. the LED lamp drive circuit of a kind of compatible civil power according to claim 4 and Metal halogen lamp ballast, its feature exist In：One end of the first described safety electric capacity passes through fuse and the cathode output end or mains of described Inductive ballast The cathode output end connection of electricity.
- 6. the LED lamp drive circuit of a kind of compatible civil power according to claim 3 and Metal halogen lamp ballast, its feature exist In：Described pressure limited protection circuit is made up of the first safety electric capacity and the second safety electric capacity, the first described safety electric capacity and institute The the second safety electric capacity stated is connected in parallel, a parallel connected end of the first described safety electric capacity and the second described safety electric capacity with The cathode output end connection of cathode output end or the mains electricity of described Inductive ballast, and it is electric with described rectifying and wave-filtering The electrode input end connection on road, another parallel connected end of the first described safety electric capacity and the second described safety electric capacity with it is described Inductive ballast cathode output end or mains electricity cathode output end connection, and with described current rectifying and wave filtering circuit Negative input connects.
- 7. the LED lamp drive circuit of a kind of compatible civil power according to claim 6 and Metal halogen lamp ballast, its feature exist In：The first described safety electric capacity and a parallel connected end of the second described safety electric capacity pass through fuse and described inductance town Flow the cathode output end connection of the cathode output end or mains electricity of device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720981689.XU CN207070411U (en) | 2017-08-08 | 2017-08-08 | A kind of LED lamp drive circuit of compatible civil power and Metal halogen lamp ballast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720981689.XU CN207070411U (en) | 2017-08-08 | 2017-08-08 | A kind of LED lamp drive circuit of compatible civil power and Metal halogen lamp ballast |
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| CN207070411U true CN207070411U (en) | 2018-03-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709440A (en) * | 2018-12-27 | 2019-05-03 | 泉芯电子技术(深圳)有限公司 | Earth leakage protection detection circuit and its control method |
| CN110035587A (en) * | 2019-05-21 | 2019-07-19 | 横店集团得邦照明股份有限公司 | A kind of high power factor LED drive circuit simplified and its implementation |
| CN110049594A (en) * | 2019-04-10 | 2019-07-23 | 欧普照明股份有限公司 | A kind of load overvoltage protection circuit and protection chip |
| CN110557868A (en) * | 2019-09-19 | 2019-12-10 | 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 |
| CN113727493A (en) * | 2021-09-03 | 2021-11-30 | 江西汇荣实业有限公司 | Intelligent microwave radar LED bulb lamp |
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2017
- 2017-08-08 CN CN201720981689.XU patent/CN207070411U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709440A (en) * | 2018-12-27 | 2019-05-03 | 泉芯电子技术(深圳)有限公司 | Earth leakage protection detection circuit and its control method |
| CN109709440B (en) * | 2018-12-27 | 2020-10-27 | 泉芯电子技术(深圳)有限公司 | Leakage protection detection circuit and control method thereof |
| CN110049594A (en) * | 2019-04-10 | 2019-07-23 | 欧普照明股份有限公司 | A kind of load overvoltage protection circuit and protection chip |
| CN110049594B (en) * | 2019-04-10 | 2024-06-07 | 欧普照明股份有限公司 | Load overvoltage protection circuit and protection chip |
| CN110035587A (en) * | 2019-05-21 | 2019-07-19 | 横店集团得邦照明股份有限公司 | A kind of high power factor LED drive circuit simplified and its implementation |
| CN110557868A (en) * | 2019-09-19 | 2019-12-10 | 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 |
| 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 |
| CN113727493A (en) * | 2021-09-03 | 2021-11-30 | 江西汇荣实业有限公司 | Intelligent microwave radar LED bulb lamp |
| CN113727493B (en) * | 2021-09-03 | 2023-11-28 | 江西汇荣实业有限公司 | Intelligent microwave radar LED bulb lamp |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190723 Address after: 312300 Zhejiang Province, Shaoxing city Shangyu District of Tongjiang City Street Road No. 208 Co-patentee after: ZHEJIANG YANKON GROUP. Co.,Ltd. Patentee after: ZHEJIANG YANKON MEGA LIGHTING Co.,Ltd. Co-patentee after: ZHEJIANG YANKON URBAN LIGHTING ENGINEERING CO.,LTD. Address before: 312300 Zhejiang Province, Shaoxing city Shangyu District of Tongjiang City Street Road No. 208 Co-patentee before: ZHEJIANG YANKON GROUP. Co.,Ltd. Patentee before: ZHEJIANG YANKON MEGA LIGHTING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 |