CN205961546U - Multi -purpose electronic transformer circuit of adjusting luminance - Google Patents
Multi -purpose electronic transformer circuit of adjusting luminance Download PDFInfo
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- CN205961546U CN205961546U CN201620928162.6U CN201620928162U CN205961546U CN 205961546 U CN205961546 U CN 205961546U CN 201620928162 U CN201620928162 U CN 201620928162U CN 205961546 U CN205961546 U CN 205961546U
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Abstract
The utility model discloses a multi -purpose electronic transformer circuit of adjusting luminance can drive halogen lamp LED and underloaded LED lamp. The utility model discloses a power input end (1), filter rectifier circuit (2), dimmer circuit (3), high frequency inverter circuit (6), high frequency output load supply circuit (7), the commercial power warp one external light modulator (8), process are inputed to power input end (1) filter rectifier circuit becomes undulant direct current after (2), and flows in respectively dimmer circuit (3) and high frequency inverter circuit (6), undulant direct current warp high frequency inverter circuit (6) contravariant is low pressure high -frequency alternating current and passes through high frequency output load supply circuit (7) is the output load power supply, high frequency inverter circuit (6) are including high -frequency transformer (TR1), high -frequency transformer (TR1) satisfies output load through the auto -excitation type vibration and is the underloading, dimmer circuit (3) are right high frequency inverter circuit (6) modulation is with the adjustment the output current of high frequency inverter circuit (6). The utility model discloses but wide application in electronic transformer field.
Description
Technical field
The utility model is related to a kind of light modulation multipurpose electronic transformer circuit.
Background technology
Traditional low-voltage halogen lamp adopts special electronic transformer, and this electronic transformer can be due to losing in load hour
Humorous and failure of oscillation, lead to during underloading cannot normal work, therefore cannot driven LED, and this traditional electronic transformer
Device does not generally possess dimming function, therefore single function it is impossible to adapt to the trend that LED progressively develops.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of the multiplex of tunable optical
Electronic transformer circuit, this electronic transformer circuit both can drive Halogen lamp LED it is also possible to drive the LED of light load, also may be used
To dim to Halogen lamp LED and LED.
The utility model be employed technical scheme comprise that：The utility model includes power input, filter rectifier, tune
Optical circuit, high-frequency inverter circuit, high frequency output load supplying circuit, civil power is input to an external light modulation through described power input
Device, is changed into the direct current fluctuating after described filter rectifier, and separately flows into described light adjusting circuit and described high frequency is inverse
Become circuit, the direct current of fluctuation is born for low-voltage high-frequency alternating current and by described high frequency output through described high-frequency inverter circuit inversion
Carry power supply circuits to power for output loading, described high-frequency inverter circuit includes high frequency transformer, described high frequency transformer passes through certainly
It is underloading that sharp formula vibration meets output loading, and described light adjusting circuit is modulated inverse to adjust described high frequency to described high-frequency inverter circuit
Become the output current of circuit.
Described light adjusting circuit includes the first dropping resistor of several series connection, in parallel with the first dropping resistor after connecting
Diode, the first dropping resistor after parallel connection and diode access the defeated of described filter rectifier after connecting with charging capacitor again
Go out end, the output current of described filter rectifier flows through described first dropping resistor, described charging capacitor is charged, this continues
Charging current provides the maintenance electric current of normal work for described external light modulator.
Described high-frequency inverter circuit includes the startup being made up of the second dropping resistor, start-up capacitance, bidirectional trigger diode
Circuit, by the first power switch transistor, the tertiary winding of described high frequency transformer, electric capacity, resistance, even end and two-way triggering two
First oscillating circuit of the diode composition that the colelctor electrode of pole pipe and the first power switch transistor is connected, is opened by the second power
Close triode, the 4th winding of described high frequency transformer, electric capacity, resistance, the second oscillating circuit of composition, by two branch road electricity
After appearance, series connection, composition passive leg is linked into the output end of described filter rectifier, described.The first of described high frequency transformer
One end of winding and two branch road electric capacity, between be connected, the other end and described first oscillating circuit, described second oscillating circuit
Between be connected；After the voltage at start-up capacitance two ends is increased to the break over voltage of bidirectional trigger diode, two-way triggering two pole
Pipe avalanche breakdown, start-up capacitance passes through base stage and the emitter stage electric discharge of the first power switch transistor, to the first power switch three
Pole pipe provides outer triggering signal, and the first power switch transistor turns on because of forward bias, and now electric current flows through one successively
Branch road electric capacity, the first winding of described high frequency transformer, the first power switch transistor, connect the first power switch transistor
Resistance between emitter stage and earth terminal, rear arrive and be gradually increased, according to electromagnetic induction principle, the first power switch transistor
The first winding that curent change on colelctor electrode passes through described high frequency transformer produces at the two ends of the 4th winding and the tertiary winding
Induced potential, polarity is each Motor Winding Same Name of Ends is negative, and the induced potential on the tertiary winding makes the first power switch transistor base
The current potential of pole raises, and leads to the first power switch transistor base current and collector current persistently to increase, the forward direction of interlock type
Feedback makes the first power switch transistor immediately enter saturation conduction state；During the first power switch transistor conducting,
Start-up capacitance passes through bidirectional trigger diode, diode, the first power switch transistor electric discharge, prevents start-up capacitance to the first work(
The base stage of rate switch triode produces secondary triggering；The foundation of high-frequency inverter circuit concussion is with to be maintained by high frequency transformer each
The mutual induction coupling of first winding, the 4th winding and the tertiary winding of winding produces what positive feedback was realized；When the first power is opened
After closing triode ON certain time, high frequency transformer enters saturation state, the now sensing in the 4th winding and the tertiary winding
Potential is zero, and the first power switch transistor base potential begins to decline, and the first power switch transistor collector current starts
Reduce, the loop current flowing through the first winding starts to reduce, according to electromagnetic induction principle, the first power switch transistor colelctor electrode
On the first winding of passing through of curent change produce new induced potential at the two ends of the 4th winding and the tertiary winding, polarity is each
Motor Winding Same Name of Ends is that just the induced potential on the tertiary winding makes the current potential of the first power switch transistor base stage reduce, the 4th
Induced potential on winding makes the current potential of the second power switch transistor base stage raise, and the positive feedback of this interlock type makes
First power switch transistor exits rapidly saturation conduction state and enters cut-off state, and the second power switch transistor is because of base simultaneously
The rising of electrode potential and rapid saturation conduction state is entered by cut-off state, now electric current flows through the second power switch three pole successively
Resistance between pipe, connection the second power switch transistor emitter stage and the first winding, the first winding, another branch road electric capacity arrive
Ground and be gradually increased, when second power switch transistor turn on certain time after, high frequency transformer is again introduced into saturation state, this
When the 4th winding and the tertiary winding in induced potential be zero, the second power switch transistor base potential begins to decline, second
Power switch transistor collector current starts to reduce, and the loop current flowing through the first winding starts to reduce, according to electromagnetic induction
Principle, the curent change on the second power switch transistor colelctor electrode passes through the first winding at the 4th winding and tertiary winding two ends
Produce a new induced potential, polarity is each Motor Winding Same Name of Ends is negative, and the induced potential on the 4th winding makes the second power
The current potential of switch triode base stage reduces, and the induced potential on the tertiary winding makes the current potential of the first power switch transistor base stage
Raise, the positive feedback of this interlock type makes the second power switch transistor exit rapidly saturation conduction state and enters cut-off shape
State, the first power switch transistor is rapid because of the rising of base potential simultaneously enters saturation conduction state by cut-off state；As
Repeatedly, the first power switch transistor and the second power switch transistor alternate conduction, in described high frequency transformer for this circulation
Second winding exports the low tension of high-frequency alternating.
Described high frequency output load supplying circuit includes the second winding of described high frequency transformer, output capacitance, described defeated
The two ends going out electric capacity are connected with the cathode output end of described filter rectifier, the Same Name of Ends of described second winding respectively, institute
The two ends stating the second winding are the output ends of described light modulation multipurpose electronic transformer circuit, connect described output loading.
Described light modulation multipurpose electronic transformer circuit also include can recovery temperature protection circuit, excessively stream, overload, short-circuit protection
Circuit, described recovery temperature protection circuit and described excessively stream, overload, short-circuit protection circuit can be respectively connected to described light adjusting circuit
And described high-frequency inverter circuit between.
It is additionally provided with protective tube between described external light modulator and described filter rectifier.
Described can recovery temperature protection circuit include at least one can recovery temperature fuse.
Described excessively stream, overload, short-circuit protection circuit include piezo-resistance, diode, the 3rd switch triode, resistance, electricity
Hold；Flow through and connect the electric current of the resistance between described light adjusting circuit and described high-frequency inverter circuit and be gradually increased and reach its setting value
During, the base potential of the 3rd switch triode gradually rises therewith and also reaches its setting value, and the 3rd switch triode is led
Logical, lead to start-up capacitance and the base potential of the first power switch transistor to be pulled low, described high-frequency inverter circuit stops concussion
Enter guard mode；Set less than it when flowing through the electric current connecting the resistance between described light adjusting circuit and described high-frequency inverter circuit
During definite value, the 3rd switch triode cut-off, the voltage of start-up capacitance begins to ramp up and restarts described high-frequency inverter circuit, normally
Work.
Described excessively stream, overload, short-circuit protection circuit are by one or more groups of controllable silicon or metal-oxide-semiconductor or relay
Become.
Described output loading is halogen lamp load or/and LED load.
Described external light modulator is controllable silicon dimmer.
Described controllable silicon dimmer adopts forward position or reverse phase to control light modulation.
Described filter rectifier is EMI filter rectifier, including rectifier bridge, filter capacitor, inductance.
The beneficial effects of the utility model are：Because the utility model includes power input, filter rectifier, light modulation
Circuit, high-frequency inverter circuit, high frequency output load supplying circuit, civil power is input to an external light modulation through described power input
Device, is changed into the direct current fluctuating after described filter rectifier, and separately flows into described light adjusting circuit and described high frequency is inverse
Become circuit, the direct current of fluctuation is born for low-voltage high-frequency alternating current and by described high frequency output through described high-frequency inverter circuit inversion
Carry power supply circuits to power for output loading, described high-frequency inverter circuit includes high frequency transformer, described high frequency transformer passes through certainly
It is underloading that sharp formula vibration meets output loading, and described light adjusting circuit is modulated inverse to adjust described high frequency to described high-frequency inverter circuit
Become the output current of circuit；The utility model arranges described high-frequency inverter circuit, and described high frequency transformer is vibrated by auto-excitation type
Meeting output loading is underloading, and described light adjusting circuit is modulated to described high-frequency inverter circuit to adjust described high-frequency inverter circuit
Output current, it is achieved that being suitable for the LED of underloading, by arranging light adjusting circuit, can be adjusted to lamp by external light modulator
Light, overcomes and normal work cannot drive LED and the defect not possessing dimming function during prior art underloading, therefore this practicality
New is a kind of multipurpose electronic transformer circuit, and this electronic transformer circuit both can drive Halogen lamp LED and gently bear it is also possible to drive
The LED carrying is it is also possible to dim to Halogen lamp LED and LED.
Brief description
Fig. 1 is the integrated circuit principle schematic of the utility model embodiment；
Fig. 2 is the circuit theory schematic flow sheet of the utility model embodiment.
Specific embodiment
As shown in Figure 1 and Figure 2, embodiment of the present utility model includes power input 1, filter rectifier 2, light modulation electricity
Road 3, high-frequency inverter circuit 6, high frequency output load supplying circuit 7, civil power is input to an external light modulation through described power input 1
Device 8, is changed into the direct current fluctuating after described filter rectifier 2, and separately flows into described light adjusting circuit 3 and described high frequency
Inverter circuit 6, the direct current of fluctuation is low-voltage high-frequency alternating current to pass through described high frequency defeated through the inversion of described high-frequency inverter circuit 6
Go out load supplying circuit 7 to power for output loading, described high-frequency inverter circuit 6 includes high frequency transformer TR1, described high frequency transformation
Device TR1 by auto-excitation type vibration meet output loading be underloading, described light adjusting circuit 3 described high-frequency inverter circuit 6 is modulated with
Adjust the output current of described high-frequency inverter circuit 6.In the present embodiment, described external light modulator 8 is controllable silicon dimmer, described
Controllable silicon dimmer adopts forward position or reverse phase to control light modulation.In the present embodiment, described filter rectifier 2 is EMI filtering
Rectification circuit, including rectifier bridge D1, filter capacitor C4, inductance L1.
Described light adjusting circuit 3 include several series connection the first dropping resistor R19～R22, with connect after first be depressured
Resistance R19～R22 diode D5 in parallel, the first dropping resistor R19～R22 and diode D5 after parallel connection again with charging capacitor
The output end of described filter rectifier 2 is accessed, the output current of described filter rectifier 2 flows through described first after C5 series connection
Dropping resistor R19～R22, charges to described charging capacitor C5, and this lasting charging current provides normally for described external light modulator 8
The maintenance electric current of work.
Described high-frequency inverter circuit 6 is included by the second dropping resistor R17, R18, start-up capacitance C2, bidirectional trigger diode
The start-up circuit of D3 composition, by the first power switch transistor T1, the tertiary winding TR1c of described high frequency transformer TR1, electric capacity
C3, C7, the colelctor electrode phase of resistance R1, R2, R7～R9, company end and bidirectional trigger diode D3 and the first power switch transistor T1
First oscillating circuit of the diode D4 composition connecting, by the second power switch transistor T2, described high frequency transformer TR1 the
Second oscillating circuit of four winding TR1d, electric capacity C6, resistance R3～R6, R10 composition, after two branch road electric capacity C8, C9 series connection
Composition passive leg is linked into the output end of described EMI filter rectifier 2, described.The first of described high frequency transformer TR1 around
One end of group TR1a is connected between two branch roads electric capacity C8, C9, the other end and described first oscillating circuit, described second shake
Swing and be connected between circuit；After the voltage at start-up capacitance C2 two ends is increased to the break over voltage V0 of bidirectional trigger diode D3,
Bidirectional trigger diode D3 avalanche breakdown, start-up capacitance C2 is put by the base stage of the first power switch transistor T1 and emitter stage
Electricity, provides outer triggering signal to the first power switch transistor T1, and the first power switch transistor T1 leads because of forward bias
Logical, now electric current flows through a branch road electric capacity C8 successively, the first winding TR1a of described high frequency transformer TR1, the first power are opened
After resistance R7, R8 of close triode T1, connecting between the emitter stage of the first power switch transistor T1 and earth terminal GND to ground and
It is gradually increased, according to electromagnetic induction principle, the curent change on the first power switch transistor T1 colelctor electrode passes through described high frequency
The first winding TR1a of transformer TR1 produces induced potential at the two ends of the 4th winding TR1d and tertiary winding TR1c, and polarity is
Each Motor Winding Same Name of Ends is negative, and the induced potential on tertiary winding TR1c makes the potential rise of the first power switch transistor T1 base stage
Height, leads to the first power switch transistor T1 base current and collector current persistently to increase, the positive feedback of interlock type makes
First power switch transistor T1 immediately enters saturation conduction state；During the first power switch transistor T1 conducting, start
Electric capacity C2 passes through bidirectional trigger diode D3, diode D4, the first power switch transistor T1 electric discharge, prevents start-up capacitance C2 pair
The base stage of the first power switch transistor T1 produces secondary triggering；High-frequency inverter circuit concussion foundation be maintained by high frequency
First winding TR1a of each winding of transformer TR1, the mutual induction coupling of the 4th winding TR1d and tertiary winding TR1c just produce
Feedback is realized；After the first power switch transistor T1 turns on certain time, high frequency transformer TR1 enters saturation state, this
When the 4th winding TR1d and tertiary winding TR1c in induced potential be zero, the first power switch transistor T1 base potential starts
Decline, the first power switch transistor T1 collector current starts to reduce, and the loop current flowing through the first winding TR1a starts to subtract
The first winding TR1a that is little, being passed through according to electromagnetic induction principle, the curent change on the first power switch transistor T1 colelctor electrode
Produce new induced potential at the two ends of the 4th winding TR1d and tertiary winding TR1c, polarity is each Motor Winding Same Name of Ends is just, the
Induced potential on three winding TR1c makes the current potential of the first power switch transistor T1 base stage reduce, on the 4th winding TR1d
Induced potential makes the current potential of the second power switch transistor T2 base stage raise, and the positive feedback of this interlock type makes the first work(
Rate switch triode T1 exits rapidly saturation conduction state and enters cut-off state, and the second power switch transistor T2 is because of base stage simultaneously
The rising of current potential and rapid saturation conduction state is entered by cut-off state, now electric current flows through the second power switch transistor successively
T2, connect resistance R5 between the second power switch transistor T2 emitter stage and the first winding TR1a, R6, the first winding TR1a,
Another branch road electric capacity C9 to ground and is gradually increased, after the second power switch transistor T2 turns on certain time, high frequency transformation
Device TR1 is again introduced into saturation state, and now the induced potential in the 4th winding TR1d and tertiary winding TR1c is zero, the second power
Switch triode T2 base potential begins to decline, and the second power switch transistor T2 collector current starts to reduce, and flows through first
The loop current of winding TR1a starts to reduce, according to electromagnetic induction principle, the electricity on the second power switch transistor T2 colelctor electrode
Rheologyization is passed through the first winding TR1a and is produced a new induced potential, pole in the 4th winding TR1d and tertiary winding TR1c two ends
Property is each Motor Winding Same Name of Ends is negative, and the induced potential on the 4th winding TR1d makes the electricity of the second power switch transistor T2 base stage
Potential drop is low, and the induced potential on tertiary winding TR1c makes the current potential of the first power switch transistor T1 base stage raise, this company
The positive feedback of locking-type makes the second power switch transistor T2 exit rapidly saturation conduction state and enters cut-off state, and simultaneously the
One power switch transistor T1 is rapid because of the rising of base potential to enter saturation conduction state by cut-off state；So circulate anti-
Multiple, the first power switch transistor T1 and the second power switch transistor T2 alternate conduction, the of described high frequency transformer TR1
The low tension that two winding TR1b export high-frequency alternating uses for load such as Halogen lamp LED and/or LED.
Described high frequency output load supplying circuit 7 includes the second winding TR1b of described high frequency transformer TR1, output capacitance
C10, two ends cathode output end, the described second winding TR1b with described filter rectifier 2 respectively of described output capacitance C10
Same Name of Ends be connected, the two ends of described second winding TR1b are the output ends of described light modulation multipurpose electronic transformer circuit, even
Connect described output loading.
Described light modulation multipurpose electronic transformer circuit also include can recovery temperature protection circuit 4, excessively stream, overload, short circuit guarantor
Protection circuit 5, described recovery temperature protection circuit 4 and described excessively stream, overload, short-circuit protection circuit 5 can be respectively connected to described tune
Between optical circuit 3 and described high-frequency inverter circuit 6；It is additionally provided with guarantor between described external light modulator 8 and described filter rectifier 2
Dangerous pipe FS；In the present embodiment, described can recovery temperature protection circuit 4 include two series connection can recovery temperature fuse FT1,
FT2.Described can recovery temperature protection circuit 4 course of work principle as follows：When can recovery temperature fuse FT1, FT2 temperature
Reach temperature components and parts such as 125 ± 5 DEG C of disconnection design temperature when, can automatically disconnect inside components and parts, enter guard mode；When
When temperature is reduced to such as 85 ± 15 DEG C of reset design temperature, device inside can automatically reset connection, enters normal operating conditions.
Described excessively stream, overload, short-circuit protection circuit 5 include piezo-resistance RV, diode D2, the 3rd switch triode T3,
Resistance R11～R16, electric capacity C1；Flow through the resistance R14 that connects between described light adjusting circuit 3 and described high-frequency inverter circuit 6～
The electric current of R16 is gradually increased during reaching its setting value I1, and the base potential of the 3rd switch triode T3 gradually rises therewith
Height also reaches its setting value V1, the 3rd switch triode T3 conducting, leads to start-up capacitance C2 and the first power switch transistor T1
Base potential be pulled low, described high-frequency inverter circuit 6 stops concussion and enters guard mode；Connect described light adjusting circuit when flowing through
When the electric current of the resistance R14～R16 between 3 and described high-frequency inverter circuit 6 is less than its setting value I1, the 3rd switch triode T3
Cut-off, the voltage of start-up capacitance C2 begins to ramp up and restarts described high-frequency inverter circuit 6, normal work.
Described excessively stream, overload, short-circuit protection circuit 5 can also by one kind of controllable silicon or metal-oxide-semiconductor or relay or
The multiple composition of person.Described output loading can be halogen lamp load 9 or/and LED loads 10 naturally it is also possible to be other underloadings
Load, wide accommodation.
The utility model can be widely applied to electronic transformer field.
Claims (10)
1. a kind of light modulation multipurpose electronic transformer circuit it is characterised in that：Including power input (1), filter rectifier
(2), light adjusting circuit (3), high-frequency inverter circuit (6), high frequency output load supplying circuit (7), civil power is through described power input
(1) it is input to an external light modulator (8), be changed into the direct current fluctuating after described filter rectifier (2), and separately flow into
Described light adjusting circuit (3) and described high-frequency inverter circuit (6), the direct current of fluctuation through described high-frequency inverter circuit (6) inversion is
Low-voltage high-frequency alternating current is simultaneously powered for output loading by described high frequency output load supplying circuit (7), described high-frequency inversion electricity
Road (6) includes high frequency transformer (TR1), and it is underloading that described high frequency transformer (TR1) meets output loading by auto-excitation type vibration,
Described light adjusting circuit (3) is modulated to described high-frequency inverter circuit (6) to adjust the output current of described high-frequency inverter circuit (6).
2. according to claim 1 light modulation multipurpose electronic transformer circuit it is characterised in that：Described light adjusting circuit (3) bag
Include several series connection the first dropping resistor (R19～R22), with connect after the first dropping resistor (R19～R22) parallel connection two
Pole pipe (D5), the first dropping resistor (R19～R22) after parallel connection and diode (D5) are accessed after being connected with charging capacitor (C5) again
The output end of described filter rectifier (2), the output current of described filter rectifier (2) flows through described first dropping resistor
(R19～R22), charges to described charging capacitor (C5), and this lasting charging current is that described external light modulator (8) provides normal work
The maintenance electric current made.
3. according to claim 1 light modulation multipurpose electronic transformer circuit it is characterised in that：Described high-frequency inverter circuit
(6) include the start-up circuit being made up of the second dropping resistor (R17, R18), start-up capacitance (C2), bidirectional trigger diode (D3),
By the first power switch transistor (T1), the tertiary winding (TR1c) of described high frequency transformer (TR1), electric capacity (C3, C7), resistance
(R1, R2, R7～R9), even end are connected with the colelctor electrode of bidirectional trigger diode (D3) and the first power switch transistor (T1)
Diode (D4) the first oscillating circuit of forming, by the second power switch transistor (T2), described high frequency transformer (TR1)
The second oscillating circuit that 4th winding (TR1d), electric capacity (C6), resistance (R3～R6, R10) form, by two branch road electric capacity (C8,
C9 after) connecting, composition passive leg is linked into the output end of described filter rectifier (2), described.Described high frequency transformer
(TR1) it is connected between one end of the first winding (TR1a) and two branch road electric capacity (C8, C9), the other end shakes with described first
Swing and be connected between circuit, described second oscillating circuit；When the voltage at start-up capacitance (C2) two ends is increased to two-way triggering two pole
After the break over voltage (V0) of pipe (D3), bidirectional trigger diode (D3) avalanche breakdown, start-up capacitance (C2) is opened by the first power
Close triode (T1) base stage and emitter stage electric discharge, to the first power switch transistor (T1) provide outer triggering signal, first
Power switch transistor (T1) turns on because of forward bias, and now electric current flows through branch road electric capacity (C8), a described high frequency successively
First winding (TR1a) of transformer (TR1), the first power switch transistor (T1), connection the first power switch transistor (T1)
Emitter stage and earth terminal (GND) between resistance (R7, R8) arrive afterwards ground and be gradually increased, according to electromagnetic induction principle, first
Curent change on power switch transistor (T1) colelctor electrode is existed by first winding (TR1a) of described high frequency transformer (TR1)
The two ends of the 4th winding (TR1d) and the tertiary winding (TR1c) produce induced potential, and polarity is each Motor Winding Same Name of Ends is negative, and the 3rd
Induced potential on winding (TR1c) makes the current potential of the first power switch transistor (T1) base stage raise, and leads to the first power to be opened
Close triode (T1) base current and collector current persistently increases, the positive feedback of interlock type makes the first power switch three pole
Pipe (T1) immediately enters saturation conduction state；During the first power switch transistor (T1) turns on, start-up capacitance (C2) passes through
Bidirectional trigger diode (D3), diode (D4), the first power switch transistor (T1) electric discharge, prevent start-up capacitance (C2) to the
The base stage of one power switch transistor (T1) produces secondary triggering；High-frequency inverter circuit concussion foundation be maintained by high frequency
The mutual induction of first winding (TR1a), the 4th winding (TR1d) and the tertiary winding (TR1c) of each winding of transformer (TR1) is even
Close and produce what positive feedback was realized；After the first power switch transistor (T1) turns on certain time, high frequency transformer (TR1) enters
Saturation state, now the induced potential in the 4th winding (TR1d) and the tertiary winding (TR1c) is zero, the first power switch three pole
Pipe (T1) base potential begins to decline, and the first power switch transistor (T1) collector current starts to reduce, and flows through the first winding
(TR1a) loop current starts to reduce, according to electromagnetic induction principle, the electricity on the first power switch transistor (T1) colelctor electrode
The first winding (TR1a) that rheology is passed through produces new sensing at the two ends of the 4th winding (TR1d) and the tertiary winding (TR1c)
Potential, polarity is each Motor Winding Same Name of Ends is that just the induced potential on the tertiary winding (TR1c) makes the first power switch transistor
(T1) current potential of base stage reduces, and the induced potential on the 4th winding (TR1d) makes the second power switch transistor (T2) base stage
Current potential raises, and the positive feedback of this interlock type makes the first power switch transistor (T1) exit rapidly saturation conduction state to enter
Enter cut-off state, the second power switch transistor (T2) enters saturation by cut-off state rapidly because of the rising of base potential simultaneously
Conducting state, now electric current flows through the second power switch transistor (T2) successively, connection the second power switch transistor (T2) is sent out
Resistance (R5, R6) between emitter-base bandgap grading and the first winding (TR1a), the first winding (TR1a), another branch road electric capacity (C9) arrive ground and
It is gradually increased, after the second power switch transistor (T2) turns on certain time, high frequency transformer (TR1) is again introduced into saturation shape
State, now the induced potential in the 4th winding (TR1d) and the tertiary winding (TR1c) is zero, the second power switch transistor (T2)
Base potential begins to decline, and the second power switch transistor (T2) collector current starts to reduce, and flows through the first winding (TR1a)
Loop current start reduce, according to electromagnetic induction principle, the curent change on the second power switch transistor (T2) colelctor electrode
One new induced potential, pole are produced in the 4th winding (TR1d) and the tertiary winding (TR1c) two ends by the first winding (TR1a)
Property is each Motor Winding Same Name of Ends is negative, and the induced potential on the 4th winding (TR1d) makes the second power switch transistor (T2) base stage
Current potential reduce, the induced potential on the tertiary winding (TR1c) makes the potential rise of the first power switch transistor (T1) base stage
Height, the positive feedback of this interlock type makes the second power switch transistor (T2) exit rapidly saturation conduction state and enters cut-off
State, the first power switch transistor (T1) is rapid because of the rising of base potential simultaneously enters saturation conduction shape by cut-off state
State；So repeatedly, the first power switch transistor (T1) and the second power switch transistor (T2) alternate conduction, described for circulation
Second winding (TR1b) of high frequency transformer (TR1) exports the low tension of high-frequency alternating.
4. according to claim 3 light modulation multipurpose electronic transformer circuit it is characterised in that：Described high frequency output load supplies
Circuit (7) includes second winding (TR1b) of described high frequency transformer (TR1), output capacitance (C10), described output capacitance
(C10) the two ends Same Name of Ends phase with the cathode output end of described filter rectifier (2), described second winding (TR1b) respectively
Connect, the two ends of described second winding (TR1b) are the output ends of described light modulation multipurpose electronic transformer circuit, connect described defeated
Go out load.
5. according to claim 3 light modulation multipurpose electronic transformer circuit it is characterised in that：Described light modulation multipurpose electronic becomes
Transformer circuits also include can recovery temperature protection circuit (4), excessively stream, overload, short-circuit protection circuit (5), described can recovery temperature
Protection circuit (4) and described excessively stream, overload, short-circuit protection circuit (5) are respectively connected to described light adjusting circuit (3) and described high frequency
Between inverter circuit (6)；It is additionally provided with protective tube (FS) between described external light modulator (8) and described filter rectifier (2).
6. according to claim 5 light modulation multipurpose electronic transformer circuit it is characterised in that：Described can recovery temperature protection
Circuit (4) includes at least one can recovery temperature fuse (FT1, FT2).
7. according to claim 5 light modulation multipurpose electronic transformer circuit it is characterised in that：Described excessively stream, overload, short circuit
Protection circuit (5) includes piezo-resistance (RV), diode (D2), the 3rd switch triode (T3), resistance (R11～R16), electric capacity
(C1)；Flow through connect described light adjusting circuit (3) and described high-frequency inverter circuit (6) between resistance (R14～R16) electric current by
Cumulative reach greatly its setting value (I1) during, the base potential of the 3rd switch triode (T3) gradually rises therewith and also reaches
Its setting value (V1), the 3rd switch triode (T3) conducting, lead to start-up capacitance (C2) and the first power switch transistor (T1)
Base potential be pulled low, described high-frequency inverter circuit (6) stops concussion and enters guard mode；Connect described light modulation electricity when flowing through
When the electric current of the resistance (R14～R16) between road (3) and described high-frequency inverter circuit (6) is less than its setting value (I1), the 3rd opens
Close triode (T3) cut-off, the voltage of start-up capacitance (C2) begins to ramp up and restarts described high-frequency inverter circuit (6), normal work
Make.
8. according to claim 5 light modulation multipurpose electronic transformer circuit it is characterised in that：Described excessively stream, overload, short circuit
Protection circuit (5) is made up of one or more of controllable silicon or metal-oxide-semiconductor or relay.
9. according to claim 1 light modulation multipurpose electronic transformer circuit it is characterised in that：Described output loading is halogen
Lamp load (9) or/and LED load (10).
10. according to claim 1 light modulation multipurpose electronic transformer circuit it is characterised in that：Described external light modulator (8)
For controllable silicon dimmer；Described controllable silicon dimmer adopts forward position or reverse phase to control light modulation；Described filter rectifier (2)
It is EMI filter rectifier, including rectifier bridge (D1), filter capacitor (C4), inductance (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928162.6U CN205961546U (en) | 2016-08-24 | 2016-08-24 | Multi -purpose electronic transformer circuit of adjusting luminance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928162.6U CN205961546U (en) | 2016-08-24 | 2016-08-24 | Multi -purpose electronic transformer circuit of adjusting luminance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205961546U true CN205961546U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620928162.6U Expired - Fee Related CN205961546U (en) | 2016-08-24 | 2016-08-24 | Multi -purpose electronic transformer circuit of adjusting luminance |
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| Country | Link |
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| CN (1) | CN205961546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211517A (en) * | 2016-08-24 | 2016-12-07 | 深圳市兴灯业电子有限公司 | Light modulation multipurpose electronic transformer circuit |
-
2016
- 2016-08-24 CN CN201620928162.6U patent/CN205961546U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211517A (en) * | 2016-08-24 | 2016-12-07 | 深圳市兴灯业电子有限公司 | Light modulation multipurpose electronic transformer circuit |
| CN106211517B (en) * | 2016-08-24 | 2019-08-16 | 深圳市中电照明股份有限公司 | Dim multipurpose electronic transformer circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190509 Address after: 518057 Lighting Center of Science and Technology South 12 Road, Nanshan High-tech Industrial Park, Shenzhen, Guangdong Province Patentee after: Shenzhen CE Lighting Co., Ltd. Address before: 518108 5th Floor, 4th Building, No. 3 Industrial Zone, Shiyan Tangtou Industrial Park, Baoan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Xingdengye Electronic Co., Ltd. |
|
| 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: 20170215 Termination date: 20190824 |