CN209643029U - A kind of 0/1-10V dim signal light-coupled isolation route - Google Patents
A kind of 0/1-10V dim signal light-coupled isolation route Download PDFInfo
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- CN209643029U CN209643029U CN201821866403.4U CN201821866403U CN209643029U CN 209643029 U CN209643029 U CN 209643029U CN 201821866403 U CN201821866403 U CN 201821866403U CN 209643029 U CN209643029 U CN 209643029U
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Abstract
The utility model discloses a kind of 0/1-10V dim signal light-coupled isolation routes, it is characterized by comprising have sawtooth wave oscillating circuit, optical coupler, first amplifier US71B, the optical coupler includes light emitting diode U71B and phototriode U71A, the phototriode U71A is electrically connected with the input terminal of main circuit, the light emitting diode U71B is electrically connected with the control terminal of first amplifier, the input terminal of the sawtooth wave oscillating circuit is electrically connected with the output end of external circuits, the output end of the sawtooth wave oscillating circuit is electrically connected with the function foot of first amplifier, the input terminal of first amplifier is electrically connected with the input terminal of external 0/1-10V signal.The utility model has the beneficial effects that voltage signal, which is added, in light modulation input terminal turns pwm signal circuit, resulting pwm signal removes driving optocoupler, and circuit structure is simple, small in size, cost performance is high.
Description
Technical field
The utility model relates to LED switch power supply or field of LED drive technology more particularly to a kind of 0/1-10V light modulation letters
Number light-coupled isolation route.
Background technique
With the rapid development of LED industry, LED light regulating technology is using more and more extensive, wherein just there is 0/1-10V to dim skill
Art.Current this light adjusting circuit has dim signal isolation and non-isolated two kinds applications, considers for safety factor, dim signal isolation
Safety Approval requirement will be included in.In 0/1-10V dim signal isolation applications, most company is using transformer isolation
Mode, the pwm signal source forcing transformer that this mode needs primary side to generate is to achieve the purpose that transmit signal, therefore primary side
It needs chip to generate pwm signal, or pwm signal is generated using independent chip, cost performance is not high, using transformer isolation tune
Optical signal is also unfavorable for reducing the volume of entire light adjusting circuit.
Chinese patent, publication number: 105072782 A of CN, publication date: on November 18th, 2015, the present invention relates to lamps and lanterns
Technical field more particularly to a kind of circuit and method that two road lighting lanterns are controlled by 0-10V analog signal.Wherein circuit packet
It includes: for respectively driving two constant-current drive circuits of two road lighting lanterns, issuing the control electricity of control signal to constant-current drive circuit
Road, partial pressure switch circuit and constant voltage circuit, constant voltage circuit is used to convert alternating current to constant voltage source, and drives electricity to constant current
Road, control circuit, partial pressure switch circuit provide power supply；Partial pressure switch circuit receives the analog signal of 0-10V and believes simulation
The low voltage signal for number being converted to 0-5V passes to control circuit；Control circuit is according to low voltage signal respectively to two
Constant-current drive circuit sends two path control signal, and constant-current drive circuit controls the luminance of lamps and lanterns according to control signal.The control
Circuit structure processed is complicated, and volume is big.
Utility model content
The mesh of the utility model is solved in 0/1-10V dim signal isolation applications, by the way of transformer isolation,
Due to the problem for causing the cost performance of circuit design relatively low using independent PWM generator, a kind of 0/1-10V light modulation letter is proposed
Number light-coupled isolation route is added voltage signal in light modulation input terminal and turns pwm signal circuit, and resulting pwm signal goes to drive
Optocoupler, circuit structure is simple, and cost performance is high.
To realize the above-mentioned technical purpose, a kind of technical solution provided by the utility model is a kind of 0/1-10V dim signal
Light-coupled isolation route includes sawtooth wave oscillating circuit, optical coupler, the first amplifier US71B, and the optical coupler includes luminous
Diode U71B and phototriode U71A, the phototriode U71A is electrically connected with the input terminal of main circuit, described to shine
Diode U71B is electrically connected with the control terminal of first amplifier, the input terminal and external circuits of the sawtooth wave oscillating circuit
Output end electrical connection, the output end of the sawtooth wave oscillating circuit is electrically connected with the function foot of first amplifier, described
The input terminal of first amplifier is electrically connected with the input terminal of external 0/1-10V signal.Believe in the present solution, being dimmed using 0/1-10V
0/1-10V dim signal in dim signal input terminal is converted into pwm signal with chip, thus pwm signal by number isolation route
Driving optocoupler is gone to achieve the purpose that the advantages that program has circuit simple by dim signal isolation, at low cost, small in size.
The sawtooth wave oscillating circuit include the second amplifier US71A, resistance RS73, resistance RS74, resistance RS75,
Resistance RS76, resistance RS77 and resistance CS71, the second amplifier US71A possess electric foot 1, electric foot 2, electric foot 3 and
The first end of electric foot 4, the resistance RS73 is electrically connected with external circuits voltage output end, the second end of the resistance RS73 and institute
The electric foot 1 for stating the second amplifier US71A is electrically connected, and the first end of the resistance RS75 and the first end of the resistance RS73 are electrically connected
It connecing, the second end of the resistance RS75 is electrically connected with the electric foot 3 of the second amplifier US71A, and the first of the resistance RS76
End is electrically connected with the second end of the resistance RS75, the second end ground connection of the resistance RS76, the first end of the capacitor CS76
It is electrically connected with the second end of the resistance RS76, the second end of the capacitor CS76 and the second end of the resistance RS73 are electrically connected
It connecing, the first end of the resistance RS74 is electrically connected with the electric foot 1 of the second amplifier US71A, and the second of the resistance RS74
End is electrically connected with the electric foot 3 of the second amplifier US71A, and the first end of the RS75 and the first end of resistance RS78 are electrically connected
It connects, the second end of the resistance RS78 is electrically connected with the first end of resistance RS79, the second end ground connection of the resistance RS79, described
The second amplifier US71A electric foot 4 be grounded.
First amplifier gathers around electric foot 5, electric foot 6 and electric foot 7, the electric foot 6 of first amplifier and described second
The electric foot 2 of amplifier is electrically connected, the output end X71B electricity of the electric foot 5 of first amplifier and the external 0/1-10V signal
Connection, the output end X71B of the external 0/1-10V signal is electrically connected with the first end of capacitor CS72, and the of the capacitor CS72
Two ends are electrically connected and are grounded with the output end X71A of the external 0/1-10V signal, the electric foot 7 and resistance of first amplifier
The first end of RS71 is electrically connected, and the second end of the resistance RS71 is electrically connected with the first end of the RS73, the resistance RS71
First end be electrically connected with the first end of resistance RS72, the second end of resistance RS72 ground connection, the first of the resistance RS72
End is electrically connected with the anode tap of the light emitting diode U71B, the cathode terminal ground connection of the light emitting diode U71B.
The collector of the light sensation triode U71A is electrically connected with the first end of resistance RS41, and the of the resistance RS41
Two ends are electrically connected with the output end of external power supply, the second end of the light sensation triode U71A and the input terminal of pwm signal
Electrical connection, the input terminal of the pwm signal are electrically connected with the first end of resistance RS42, the second end ground connection of the resistance RS42.
The utility model has the beneficial effects that voltage signal, which is added, in light modulation input terminal turns pwm signal circuit, it is resulting
Pwm signal removes driving optocoupler, and circuit structure is simple, small in size, cost performance is high.
Detailed description of the invention
Fig. 1 is a kind of 0/1-10V dim signal light-coupled isolation line map of the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to the accompanying drawing and implement
Example is described in further detail the utility model, it should be appreciated that the specific embodiments described herein are only this realities
The protection scope of the utility model, ability are not limited only to explain the utility model with a kind of novel most preferred embodiment
It is practical new to belong to this for domain those of ordinary skill every other embodiment obtained without making creative work
The range of type protection.
As shown in Figure 1, a kind of 0/1-10V dim signal light-coupled isolation route, includes sawtooth wave oscillating circuit, optocoupler
Device, the first amplifier US71B, the optical coupler include light emitting diode U71B and phototriode U71A, and described photosensitive three
Pole pipe U71A is electrically connected with the input terminal of main circuit, and the control terminal of the light emitting diode U71B and first amplifier are electrically connected
Connect, the input terminal of the sawtooth wave oscillating circuit is electrically connected with the output end of external circuits, the sawtooth wave oscillating circuit it is defeated
Outlet is electrically connected with the function foot of first amplifier, the input terminal of first amplifier and external 0/1-10V signal
Input terminal electrical connection.In the present embodiment, route is isolated using 0/1-10V dim signal, it, will with chip in dim signal input terminal
0/1-10V dim signal is converted into pwm signal, and thus pwm signal goes driving optocoupler to achieve the purpose that for dim signal to be isolated, should
The advantages that scheme has circuit simple, at low cost, small in size.
The sawtooth wave oscillating circuit include the second amplifier US71A, resistance RS73, resistance RS74, resistance RS75,
Resistance RS76, resistance RS77 and resistance CS71, the second amplifier US71A possess electric foot 1, electric foot 2, electric foot 3 and
The first end of electric foot 4, the resistance RS73 is electrically connected with external circuits voltage output end, the second end of the resistance RS73 and institute
The electric foot 1 for stating the second amplifier US71A is electrically connected, and the first end of the resistance RS75 and the first end of the resistance RS73 are electrically connected
It connecing, the second end of the resistance RS75 is electrically connected with the electric foot 3 of the second amplifier US71A, and the first of the resistance RS76
End is electrically connected with the second end of the resistance RS75, the second end ground connection of the resistance RS76, the first end of the capacitor CS76
It is electrically connected with the second end of the resistance RS76, the second end of the capacitor CS76 and the second end of the resistance RS73 are electrically connected
It connecing, the first end of the resistance RS74 is electrically connected with the electric foot 1 of the second amplifier US71A, and the second of the resistance RS74
End is electrically connected with the electric foot 3 of the second amplifier US71A, and the first end of the RS75 and the first end of resistance RS78 are electrically connected
It connects, the second end of the resistance RS78 is electrically connected with the first end of resistance RS79, the second end ground connection of the resistance RS79, described
The second amplifier US71A electric foot 4 be grounded.In the present embodiment, when normal work by the second amplifier US71A, resistance S73,
Resistance RS74, resistance RS75, resistance RS76, resistance RS77, capacitor CS71 form sawtooth wave oscillation circuit, and sawtooth signal is connect
Entering the first amplifier US71B inverting input terminal, quiescent point is arranged by resistance RS78, resistance RS79 in non-inverting input terminal, and first
7 output pwm signal of electric foot of amplifier US71B, when the non-inverting input terminal of the first amplifier US71B accesses 0/1-10V signal,
The duty ratio of US71B output pwm signal will change with 0/1-10V voltage signal and be changed, to realize that 0/1-10V signal arrives
The conversion of pwm signal drives optocoupler with this pwm signal, and pwm signal is sent in main circuit through optocoupler transmission and completes isolation transmission
Purpose, since the duty ratio and 0/1-10V voltage signal of this pwm signal are linear, main circuit part can be by this pwm signal
It does simple process and is converted into desired signal.
First amplifier gathers around electric foot 5, electric foot 6 and electric foot 7, the electric foot 6 of first amplifier and described second
The electric foot 2 of amplifier is electrically connected, the output end X71B electricity of the electric foot 5 of first amplifier and the external 0/1-10V signal
Connection, the output end X71B of the external 0/1-10V signal is electrically connected with the first end of capacitor CS72, and the of the capacitor CS72
Two ends are electrically connected and are grounded with the output end X71A of the external 0/1-10V signal, the electric foot 7 and resistance of first amplifier
The first end of RS71 is electrically connected, and the second end of the resistance RS71 is electrically connected with the first end of the RS73, the resistance RS71
First end be electrically connected with the first end of resistance RS72, the second end of resistance RS72 ground connection, the first of the resistance RS72
End is electrically connected with the anode tap of the light emitting diode U71B, the cathode terminal ground connection of the light emitting diode U71B.
The collector of the light sensation triode U71A is electrically connected with the first end of resistance RS41, and the of the resistance RS41
Two ends are electrically connected with the output end of external power supply, the second end of the light sensation triode U71A and the input terminal of pwm signal
Electrical connection, the input terminal of the pwm signal are electrically connected with the first end of resistance RS42, the second end ground connection of the resistance RS42.
The specific embodiment of the above be a kind of 0/1-10V dim signal light-coupled isolation route of the utility model compared with
Good embodiment, limits the specific implementation range of the utility model not with this, and the scope of the utility model includes being not limited to
Present embodiment, equivalence changes made by all shape, structures according to the utility model are in the protection of the utility model
In range.
Claims (4)
1. a kind of 0/1-10V dim signal light-coupled isolation route, it is characterised in that: include sawtooth wave oscillating circuit, optical coupler,
First amplifier US71B, the optical coupler include light emitting diode U71B and phototriode U71A, the phototriode
U71A is electrically connected with the input terminal of main circuit, and the light emitting diode U71B is electrically connected with the control terminal of first amplifier,
The input terminal of the sawtooth wave oscillating circuit is electrically connected with the output end of external circuits, the output end of the sawtooth wave oscillating circuit
It is electrically connected with the function foot of first amplifier, the input of the input terminal of first amplifier and external 0/1-10V signal
End electrical connection.
2. a kind of 0/1-10V dim signal light-coupled isolation route according to claim 1, it is characterised in that: the saw
Tooth wave oscillating circuit includes the second amplifier US71A, resistance RS73, resistance RS74, resistance RS75, resistance RS76, resistance
RS77 and capacitor CS71, the second amplifier US71A possess electric foot 1, electric foot 2, electric foot 3 and electric foot 4, the resistance
The first end of RS73 is electrically connected with external circuits voltage output end, the second end of the resistance RS73 and second amplifier
The electric foot 1 of US71A is electrically connected, and the first end of the resistance RS75 is electrically connected with the first end of the resistance RS73, the resistance
The second end of RS75 is electrically connected with the electric foot 3 of the second amplifier US71A, the first end of the resistance RS76 and the resistance
The second end of RS75 is electrically connected, the second end ground connection of the resistance RS76, the first end of the capacitor CS71 and the resistance
The second end of RS76 is electrically connected, and the second end of the capacitor CS71 is electrically connected with the second end of the resistance RS77, the resistance
The first end of RS74 is electrically connected with the electric foot 1 of the second amplifier US71A, the second end of the resistance RS74 and described second
The electric foot 3 of amplifier US71A is electrically connected, and the first end of the RS75 is electrically connected with the first end of resistance RS78, the resistance
The second end of RS78 is electrically connected with the first end of resistance RS79, the second end ground connection of the resistance RS79, second amplification
The electric foot 4 of device US71A is grounded.
3. a kind of 0/1-10V dim signal light-coupled isolation route according to claim 2, it is characterised in that: described first
Amplifier gathers around electric foot 5, electric foot 6 and electric foot 7, and the electric foot 6 of first amplifier and the electric foot 2 of second amplifier are electrically connected
It connects, the electric foot 5 of first amplifier is electrically connected with the output end X71B of the external 0/1-10V signal, the external 0/1-
The output end X71B of 10V signal is electrically connected with the first end of capacitor CS72, the second end of the capacitor CS72 and described external 0/
The output end X71A of 1-10V signal is electrically connected and is grounded, and the electric foot 7 and the first end of resistance RS71 of first amplifier are electrically connected
It connects, the second end of the resistance RS71 is electrically connected with the first end of the RS73, the first end and resistance of the resistance RS71
The first end of RS72 is electrically connected, the second end ground connection of the resistance RS72, the first end of the resistance RS72 and described luminous two
The anode tap of pole pipe U71B is electrically connected, the cathode terminal ground connection of the light emitting diode U71B.
4. a kind of 0/1-10V dim signal light-coupled isolation route according to claim 1, it is characterised in that: the light
The collector of sense triode U71A is electrically connected with the first end of resistance RS41, the second end of the resistance RS41 and external power supply electricity
The output end in source is electrically connected, and the second end of the light sensation triode U71A is electrically connected with the input terminal of pwm signal, the PWM letter
Number input terminal be electrically connected with the first end of resistance RS42, the second end of resistance RS42 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821866403.4U CN209643029U (en) | 2018-11-13 | 2018-11-13 | A kind of 0/1-10V dim signal light-coupled isolation route |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821866403.4U CN209643029U (en) | 2018-11-13 | 2018-11-13 | A kind of 0/1-10V dim signal light-coupled isolation route |
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| CN209643029U true CN209643029U (en) | 2019-11-15 |
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| CN201821866403.4U Active CN209643029U (en) | 2018-11-13 | 2018-11-13 | A kind of 0/1-10V dim signal light-coupled isolation route |
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| CN (1) | CN209643029U (en) |
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