CN206370965U - 0~10V LED dim signals change-over circuits and LED power light adjusting circuit - Google Patents
0~10V LED dim signals change-over circuits and LED power light adjusting circuit Download PDFInfo
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- CN206370965U CN206370965U CN201621214276.0U CN201621214276U CN206370965U CN 206370965 U CN206370965 U CN 206370965U CN 201621214276 U CN201621214276 U CN 201621214276U CN 206370965 U CN206370965 U CN 206370965U
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Abstract
The utility model is related to 0~10V of one kind LED dim signals change-over circuits and LED power light adjusting circuit.One kind 0~10V LED dim signal change-over circuits, the drive signal of the control chip for 0~10V dim signals to be converted to LED power light adjusting circuit, including：Power input, for receiving input power using the working power as 0~10V LED dim signal change-over circuits；Isolation element, side is connected with 0~10V dim signal inputs, for receiving 0~10V dim signals；The opposite side of isolation element is connected with modular converter, and is connected with power input；Isolation element is used for voltage progress to 0~10V dim signals etc. than the input voltage after isolation as modular converter；And modular converter, for being exported after input voltage is converted into the drive signal with target voltage to control chip.0~10V LED dim signals change-over circuits are not related to the singlechip technology or conventional simulation PWM adjustment change-over circuits of complexity, and whole circuit structure is simple and cost is low.
Description
Technical field
The utility model be related to LED light modulation field, more particularly to 0~10V of one kind LED dim signals change-over circuits and
LED power light adjusting circuit.
Background technology
PSR (primary adjustment) circuit structure is simple, in the extensive use of LED drive power field.With dimming function every
From primary constant current single- stage PFC (PFC) power management chip of formula, the specific control function of 0-10V light modulations is realized.
Outside 0-10V voltage signals are generally passed through into the complicated analog circuits such as triangular-wave generator, PWM (pulse width modulation) adjustment
It is converted into corresponding pwm signal, or outside 0-10V voltage signals is converted into corresponding control using singlechip technology believing
Number, then pass to the light modulation pin of primary master control chip by isolating photoelectrical coupler and control main control chip, so as to adjust input
To LED electric current.Outside 0-10V voltage signals are converted into control signal using singlechip technology or conventional simulation PWM adjustment
Afterwards, control signal is passed into primary master control chip by isolation optocoupler isolator, whole circuit is complex and high cost.
Utility model content
Based on this, it is necessary to for traditional LED light adjusting circuits circuit it is complex and high cost the problem of there is provided one kind tie
0~10V LED dim signal change-over circuits that structure is simple and cost is low.
One kind 0~10V LED dim signal change-over circuits, for 0~10V dim signals to be converted into LED power light modulation
The drive signal of the control chip of circuit；Including：Power input, for receiving input power to be used as 0~10V LED
The working power of dim signal change-over circuit；Isolation element, side and the 0~10V dim signal inputs of the isolation element
Connection, for receiving 0~10V dim signals；The opposite side of the isolation element is connected with modular converter, and defeated with the power supply
Enter end connection；The isolation element is used for voltage progress to 0~10V dim signals etc. than being used as the conversion after isolation
The input voltage of module；And
The modular converter, for being converted into the input voltage to export to institute after the drive signal with target voltage
State control chip.
In one of the embodiments, the isolation element is common mode inductance；The inductive primary of the common mode inductance
It is connected with the modular converter and the power input；The inductive secondary of the common mode inductance is dimmed with 0~10V to be believed
Number input connection；Or the isolation element is transformer；The primary side of the transformer and the power input with
And the modular converter connection；The primary side of the transformer is connected with the input of 0~10V dim signals；It is described to become
The coil turn of the primary side winding of depressor is equal to the coil turn of the primary side winding.
In one of the embodiments, in addition to operating voltage process circuit；The operating voltage process circuit is connected to
Between the power input and the isolation element；The operating voltage process circuit includes the first resistor and first of series connection
Electric capacity, the first resistor is also connected with the power input, and first electric capacity is also electrically connected with the isolation element.
In one of the embodiments, the modular converter includes triode, second resistance, 3rd resistor and the second electricity
Hold；The colelctor electrode of the triode as 0~10V LED dim signal change-over circuits output end, for the control
Coremaking piece is connected；The second resistance is connected with the base stage and the isolation element of the triode respectively；The 3rd resistor
One end is connected with the emitter stage of the triode, the other end ground connection of the 3rd resistor；Described second electric capacity one end with it is described
The base stage connection of triode, the other end ground connection of second electric capacity.In one of the embodiments, in addition to protection circuit；
The protection circuit is connected between the isolation element and 0~10V dim signals input；The protection circuit is used for
When 0~10V dim signals are zero, the voltage in the isolation element is controlled more than preset value.A reality wherein
Apply in example, the voltage protection circuit includes diode, the negative pole of the diode connects the defeated of 0~10V dim signals
Enter end, the positive pole of the diode connects the isolation element.
In one of the embodiments, in addition to clamper module, the clamper wired in parallel in the isolation element with
The side of 0~10V dim signals input connection, for the voltage clamping in the isolation element to target to be fixed
Value.In one of the embodiments, in addition to current rectifying and wave filtering circuit；The current rectifying and wave filtering circuit includes the first rectification filtering unit
With the second rectification filtering unit；First rectification filtering unit is connected between the isolation element and the modular converter；
Second current rectifying and wave filtering circuit is connected between the isolation element and 0~10V dim signals input.Wherein one
In individual embodiment, in addition to light modulator；The light modulator is electrically connected with 0~10V dim signals input, for providing
0~10V dim signals.
A kind of LED power light adjusting circuit, including current regulating circuit and control circuit；The current regulating circuit with it is described
Circuit connection is controlled, is additionally operable to be electrically connected with LED；The control circuit includes control chip；Also include any of the above-described reality
Apply 0~10V LED dim signal change-over circuits described in example, the modulus of conversion of 0~10V LED dim signal change-over circuits
Block is electrically connected with control chip；The control chip is used to generate current regulating signal according to the dim signal；The electricity
Stream regulation circuit is used to the electric current exported to the LED is adjusted under the control of the current regulating signal, with reality
Now to the brightness regulation of the LED.
Above-mentioned 0~10V LED dim signal change-over circuits, power input receives input power to be used as 0~10V LED
The working power of dim signal change-over circuit.Isolation element is connected with 0~10V dim signals input and modular converter respectively,
Voltage progress of 0~10V dim signals to reception etc. is than the input voltage after isolation as modular converter.Modular converter will be defeated
Enter voltage conversion to export to control chip into the drive signal with target voltage, to realize to LED power brightness adjustment control.This 0
~10V LED dim signals change-over circuits are not related to the singlechip technology or conventional simulation PWM adjustment change-over circuits of complexity, whole
Individual circuit structure is simple and cost is low.
Brief description of the drawings
Fig. 1 be an embodiment in 0~10V LED dim signal change-over circuits theory diagram；
Fig. 2 be another embodiment in 0~10V LED dim signal change-over circuits theory diagram；
Fig. 3 be Fig. 2 in 0~10V LED dim signal change-over circuits circuit theory diagrams；
Fig. 4 be an embodiment in LED power light adjusting circuit circuit theory diagrams.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The present invention, is not intended to limit the present invention.
Fig. 1 be an embodiment in 0~10V LED dim signal change-over circuits theory diagram.0~10V LED are adjusted
Optical signal change-over circuit, the driving letter of the control chip 20 for 0~10V dim signals to be converted to LED power light adjusting circuit
Number, so that control chip 20 brightness of LED can be adjusted according to the drive signal.
Referring to Fig. 1,0~10V LED dim signals change-over circuit includes power input 110, and isolation element 130,0~
10V dim signals input 150 and modular converter 170.Power input 110 is used to receive input power to be used as 0~10V
The working power of LED dim signal change-over circuits.The side of isolation element 130 is connected with 0~10V dim signals input 150,
For receiving 0~10V dim signals.The opposite side of isolation element 130 is connected with modular converter 170, and with power input 110
Connection.Voltage progress for the voltage signal that 130 pairs of 0~10V dim signals inputs 150 of isolation element are inputted etc. is more defeated than after isolation
Go out to modular converter 170, be used as the input voltage of modular converter 170.Input voltage is converted into target by modular converter 170
The drive signal of voltage is exported to control chip 20.Control chip 20 dims electricity according to the drive signal received to LED power
The electric current on road is regulated and controled, so as to realize that the brightness to LED is controlled.
Above-mentioned 0~10V LED dim signal change-over circuits, power input 110 receives input power to be used as 0~10V
The working power of LED dim signal change-over circuits.Isolation element 130 respectively with 0~10V dim signals input 150 and conversion
Module 170 is connected, to voltage progress of 0~10V dim signals of reception etc. than the input electricity after isolation as modular converter 170
Pressure.Input voltage is converted into the drive signal with target voltage and exported to control chip 20, control chip by modular converter 170
20 regulate and control according to the drive signal to the electric current of LED power light adjusting circuit, so as to realize that the brightness to LED is controlled
System.0~10V LED dim signals change-over circuits are not related to singlechip technology or the conventional simulation PWM adjustment conversions of complexity
Circuit, whole circuit structure is simple and cost is low.
Fig. 2 be another embodiment in 0~10V LED dim signal change-over circuits theory diagram.0~10V LED
Dim signal change-over circuit includes power input 201, operating voltage process circuit 203, isolation element 205,0~10V light modulations
Signal input part 207, protection circuit 209 and modular converter 217.Power input 201 is used to receive input power to be used as 0
The working power of~10V LED dim signal change-over circuits.In one embodiment, power input 201 can be directly electric with LED
Source light adjusting circuit connection, so as to directly be powered by LED power light adjusting circuit.Power input 201 and operating voltage process circuit
203 connections, operating voltage process circuit 203 is also connected with isolation element 205.Operating voltage process circuit 203 is by input power
Voltage be adjusted to the operating voltage of 0~10V LED dim signal change-over circuits after export to isolation element 205.Isolation element
205 sides are electrically connected with by protection circuit 209 and 0~10V dim signals input 207, opposite side and the electricity of modular converter 217
Property connection.Protection circuit 209 is used for when 0~10V dim signals are zero, and the voltage in control isolation element 205 is in preset value
More than.
In one embodiment, above-mentioned 0~10V LED dim signals change-over circuit can also include clamper module 211.Clamper
Module 211 is parallel in isolation element 205, for by the voltage clamping in isolation element 205 to target fixed value.Clamper module
211 can be constituted for voltage stabilizing elements such as voltage-stabiliser tubes.
In one embodiment, above-mentioned 0~10V LED dim signals change-over circuit also includes the first filter rectification unit 215
With the second rectification filtering unit 213.Second filter rectification unit 213 is connected between isolation element 205 and clamper module 211.
The operating voltage signal that second filter rectification unit 213 is exported to isolation element 205 is filtered rectification.205 pair 0 of isolation element
Voltage progress of~10V dim signals etc. is than the input voltage after isolation as modular converter 217.First rectification filtering unit
215 are connected between isolation element 205 and modular converter 217, and the voltage signal that isolation element 205 is exported carries out rectifying and wave-filtering
After be conveyed to modular converter 217.Input voltage is converted into the drive signal with target voltage and exported to control by modular converter 217
Coremaking piece 30.Control chip 30 regulates and controls according to drive signal to the electric current of LED power light adjusting circuit, so as to realize to LED
The brightness of lamp is controlled.
In one embodiment, above-mentioned 0~10V LED dim signals change-over circuit can also include light modulator.Light modulator and 0
0~10V dim signals input 207 of~10V LED dim signal change-over circuits is connected.Light modulator can be passive light modulator
Or active light modulator.Passive light modulator needs extraneous offer power supply, causes to export come sourcing current by adjusting light modulator itself
Voltage is target external voltage signal.Active light modulator is that light modulator itself provides voltage signal.
Fig. 3 be Fig. 2 in 0~10V LED dim signal change-over circuits circuit theory diagrams.Power input 201 is defeated
Enter and hold ZCD, input ZCD is connected (such as Fig. 4 institutes with the pin of power supply main transformer T1VCC/ZCD windings 5 of LED power light adjusting circuit
Show).Operating voltage process circuit 203 includes the first resistor R37 and the first electric capacity C28 of series connection.Isolation element 205 is common mode electricity
Feel L3.Common mode inductance L3 includes inductive primary and inductive secondary.Inductive primary includes pin 3 and pin 4, secondary
Level inductance coil includes pin 1 and pin 2.In other embodiments, isolation element 205 can be transformer.Second rectification is filtered
Ripple unit 213 includes diode D26 and electric capacity C25.Diode D26 positive pole and the pin 1 of common mode inductance L3 primary sides connect
Connect, negative pole is connected with electric capacity C25 one end.Electric capacity C25 one end is connected with diode D26 negative pole, the other end and common mode inductance L3
The pin 2 of primary side connect.Clamper module 211 includes voltage-regulator diode ZD1, and voltage-regulator diode ZD1 is in parallel with electric capacity C25,
And voltage-regulator diode ZD1 negative pole is connected with diode D26 negative pole.Protection circuit 209 includes diode D8, diode D8's
Negative pole connection 0~10V dim signals input 207, the negative pole of positive pole and diode D26 is electrically connected with.0~10V dim signals
Input 207 is DIM_0-10V and DIM_GND.First filter rectification unit 215 includes diode D25 and electric capacity C24, two poles
Pipe D25 positive pole is connected with the pin 4 of common mode inductance L3 primary side, and negative pole is connected with electric capacity C24 one end.Electric capacity C24 one end
It is connected with diode D25 negative pole, the other end is connected with the pin 3 of common mode inductance L3 primary side.Modular converter 217 includes three
Pole pipe Q2, second resistance R65,3rd resistor R8 and the second electric capacity C6.Triode Q2 colelctor electrode and the pipe of control chip 30
Pin DIM pin are connected, and are used as the output end of 0~10V LED dim signal change-over circuits.Second resistance R65 respectively with triode Q2
Base stage and diode D25 connections.3rd resistor R8 one end is connected with triode Q2 emitter stage, other end ground connection.Second
Electric capacity C6 one end is connected with triode Q2 base stage, other end ground connection.By adjusting between second resistance R65 and 3rd resistor R8
Resistance proportionate relationship, so as to realize the voltage-regulation at the colelctor electrode to triode Q2, namely realize the light modulation to output
The regulation of signal magnitude, and then realize the regulation to LED luminance eventually through control chip 30.
The course of work of above-mentioned 0~10V LED dim signal change-over circuits is as follows：Pass through the electricity of LED power light adjusting circuit
The voltage of the pin of source main transformer T1VCC/ZCD windings 5 output is a high frequency square wave voltage, and its frequency is dimmed equal to LED power
Circuit work frequency.High frequency square wave voltage amplitude and AC-input voltage and the common mode inductance L3 turn ratioes are designed with relation.First
Common mode inductance L3 is added to after the high frequency square wave voltage capacitance-resistance current limliting decompression that resistance R37 and the first electric capacity C28 are inputted to input ZCD
Pin 4, equivalent to one high frequency excitation voltage of inductive primary to common mode inductance L3.C25 pairs of diode D26 and electric capacity
The voltage signal at common mode inductance L3 inductive secondaries end is filtered rectification.Diode D25 and electric capacity C24 are to common mode inductance L3
The voltage signal at inductive primary end is filtered rectification.Common mode inductance L3 primary and secondary inductance coil turn ratioes relation is 1:1, electricity
Hold voltage on C24 and be equal to voltage on electric capacity C25.Voltage-regulator diode ZD1 is in parallel with electric capacity C25, by the voltage of inductive secondary
Clamper is in a ceiling voltage.Diode D8 negative pole connection input DIM_0-10V, positive pole is connected with electric capacity C25 one end.When
When 0~10V dim signals are zero volt, due to diode D8 protective effect, electric capacity C25 voltages are 0.7V or so.Triode Q2,
Second resistance R65,3rd resistor R8 and the second electric capacity C6 are constituted the modulus of conversion of 0-10V voltage conversion 0.3-2.8V voltages
Block.0~10V dim signal is connect in DIM_0-10V and DIM_GND.When 0~10V dimming signal voltages are 10V, pass through
The transformation of modular converter 217 causes triode Q2 current collection extremely 2.8V, and the now power supply output of LED power light adjusting circuit is most
High current, LED light modulation brightness is very.When 0~10V dimming signal voltages are zero volt, because diode D8 protection is made
With so that the voltage in common mode inductance L3 secondary-side voltage namely electric capacity C25 is 0.7V or so, now triode Q2 colelctor electrodes
For 0.3V, the power supply of LED power light adjusting circuit is closed, and no output current, load LED lamp does not work.In an embodiment party
In formula, voltage-regulator diode ZD1 can be more than 10V voltage-regulator diode with magnitude of voltage.Voltage-regulator diode ZD1 magnitudes of voltage are more than 10V,
Electric capacity C25 voltages are more than 10V, and the voltage that control chip 30 is input to after being changed by modular converter 217 is more than 2.8V.Control core
Piece 30 is when inputting dimming signal voltage more than 2.8V, and the electric current of control input LED is 100% output current.With use
Magnitude of voltage is the same for 10V voltage-regulator diode action effect.
0~10V voltage signals of outside input are converted into 0.3 by above-mentioned 0~10V LED dim signals change-over circuit~
The control circuit to LED power light adjusting circuit is exported after 2.8V voltage signals, so that the power supply output of LED power light adjusting circuit
It is current controlled in outside 0-10V signal voltages.The load LED lamp brightness of LED power light adjusting circuit linearly becomes with output current
Change, that is to say that realization adjusts load LED lamp brightness by outside 0~10V signal voltages.
As shown in figure 4, the utility model also provides a kind of LED power light adjusting circuit.The LED power light adjusting circuit includes electricity
Stream regulation circuit 410 and control circuit 430.Current regulating circuit 410 is electrically connected with control circuit 430, and electrical with LED
Connection.Circuit 430 is controlled to include control chip U1RT7306.The LED power light adjusting circuit also includes the 0 of any of the above-described embodiment
~10V LED dim signal change-over circuits.0~10V LED dim signals change-over circuits electrically connect with control chip U1RT7306
Connect.Control chip U1RT7306 is used to generate current regulating signal according to dim signal.Current regulating circuit 410 is used in electric current
The electric current exported to LED is adjusted under the control of Regulate signal, to realize the brightness regulation to LED.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. one kind 0~10V LED dim signal change-over circuits, for 0~10V dim signals to be converted into LED power light modulation electricity
The drive signal of the control chip on road；It is characterised in that it includes：
Power input, for receiving input power using the work electricity as 0~10V LED dim signal change-over circuits
Source；
Isolation element, the side of the isolation element is connected with 0~10V dim signal inputs, for receiving 0~10V light modulations
Signal；The opposite side of the isolation element is connected with modular converter, and is connected with the power input；The isolation element is used
The input voltage of the modular converter is used as after to the voltage of 0~10V dim signals progress etc. than isolation；And
The modular converter, for being converted into the input voltage to export after the drive signal with target voltage to the control
Coremaking piece.
2. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that the isolation element is
Common mode inductance；The inductive primary of the common mode inductance is connected with the modular converter and the power input；It is described
The inductive secondary of common mode inductance is connected with the input of 0~10V dim signals；Or
The isolation element is transformer；The primary side of the transformer connects with the power input and the modular converter
Connect；The primary side of the transformer is connected with the input of 0~10V dim signals；The primary side winding of the transformer
Coil turn be equal to the primary side winding coil turn.
3. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that also including operating voltage
Process circuit；The operating voltage process circuit is connected between the power input and the isolation element；The work
Voltage processing circuitry includes the first resistor and the first electric capacity of series connection, and the first resistor is also connected with the power input,
First electric capacity is also electrically connected with the isolation element.
4. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that the modular converter bag
Include triode, second resistance, 3rd resistor and the second electric capacity；The colelctor electrode of the triode is adjusted as 0~10V LED
The output end of optical signal change-over circuit, for being connected with the control chip；The second resistance respectively with the triode
Base stage and isolation element connection；Described 3rd resistor one end is connected with the emitter stage of the triode, the 3rd resistor
The other end ground connection；Described second electric capacity one end is connected with the base stage of the triode, the other end ground connection of second electric capacity.
5. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that also including protection electricity
Road；The protection circuit is connected between the isolation element and 0~10V dim signals input；The protection circuit
For when 0~10V dim signals are zero, controlling the voltage in the isolation element more than preset value.
6. 0~10V LED dim signal change-over circuits according to claim 5, it is characterised in that the voltage protection electricity
Road includes diode, and the negative pole of the diode connects the input of 0~10V dim signals, the positive pole of the diode
Connect the isolation element.
7. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that also including clamper mould
Block, the clamper wired in parallel is used in the side being connected in the isolation element with 0~10V dim signals input
By the voltage clamping in the isolation element to target fixed value.
8. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that also including rectifying and wave-filtering
Circuit；The current rectifying and wave filtering circuit includes the first rectification filtering unit and the second rectification filtering unit；First rectifying and wave-filtering
Unit is connected between the isolation element and the modular converter；Second current rectifying and wave filtering circuit is connected to the isolation member
Between part and 0~10V dim signals input.
9. 0~10V LED dim signal change-over circuits according to claim 1, it is characterised in that also including light modulator；
The light modulator is electrically connected with 0~10V dim signals input, for providing 0~10V dim signals.
10. a kind of LED power light adjusting circuit, including current regulating circuit and control circuit；The current regulating circuit with it is described
Circuit connection is controlled, is additionally operable to be electrically connected with LED；The control circuit includes control chip；Characterized in that, also including
0~10V LED dim signal change-over circuits described in the claims any one of 1-9,0~10V LED dim signals
The modular converter of change-over circuit is electrically connected with control chip；The control chip is used to generate electric current according to the dim signal
Regulate signal；The current regulating circuit is used under the control of the current regulating signal to exporting to the electricity of the LED
Stream is adjusted, to realize the brightness regulation to the LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621214276.0U CN206370965U (en) | 2016-11-10 | 2016-11-10 | 0~10V LED dim signals change-over circuits and LED power light adjusting circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621214276.0U CN206370965U (en) | 2016-11-10 | 2016-11-10 | 0~10V LED dim signals change-over circuits and LED power light adjusting circuit |
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| CN206370965U true CN206370965U (en) | 2017-08-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793243A (en) * | 2016-11-10 | 2017-05-31 | 深圳市朗科智能电气股份有限公司 | 0~10V LED dim signals change-over circuits and LED power light adjusting circuit |
| CN109996372A (en) * | 2019-04-30 | 2019-07-09 | 电子科技大学中山学院 | LED driving power supply |
| CN113133156A (en) * | 2021-04-25 | 2021-07-16 | 上海奥简微电子科技有限公司 | Current shunt circuit suitable for LED degree of depth is adjusted luminance |
| CN114126142A (en) * | 2021-11-05 | 2022-03-01 | 深圳市瑞晶实业有限公司 | Trinity dimmer circuit of output current precision is adjusted in area |
-
2016
- 2016-11-10 CN CN201621214276.0U patent/CN206370965U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793243A (en) * | 2016-11-10 | 2017-05-31 | 深圳市朗科智能电气股份有限公司 | 0~10V LED dim signals change-over circuits and LED power light adjusting circuit |
| CN106793243B (en) * | 2016-11-10 | 2019-04-30 | 深圳市朗科智能电气股份有限公司 | 0~10V LED dim signal conversion circuit and LED power light adjusting circuit |
| CN109996372A (en) * | 2019-04-30 | 2019-07-09 | 电子科技大学中山学院 | LED driving power supply |
| CN113133156A (en) * | 2021-04-25 | 2021-07-16 | 上海奥简微电子科技有限公司 | Current shunt circuit suitable for LED degree of depth is adjusted luminance |
| CN113133156B (en) * | 2021-04-25 | 2024-01-26 | 上海奥简微电子科技有限公司 | Current shunt circuit suitable for LED deep dimming |
| CN114126142A (en) * | 2021-11-05 | 2022-03-01 | 深圳市瑞晶实业有限公司 | Trinity dimmer circuit of output current precision is adjusted in area |
| CN114126142B (en) * | 2021-11-05 | 2024-02-13 | 深圳市瑞晶实业有限公司 | Three-in-one dimming circuit with output current precision adjustment function |
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