CN105407614B - A kind of adjusting control circuit provided with fan and turn-off function - Google Patents

A kind of adjusting control circuit provided with fan and turn-off function Download PDF

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Publication number
CN105407614B
CN105407614B CN201510979058.XA CN201510979058A CN105407614B CN 105407614 B CN105407614 B CN 105407614B CN 201510979058 A CN201510979058 A CN 201510979058A CN 105407614 B CN105407614 B CN 105407614B
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CN
China
Prior art keywords
circuit
fan
resistance
pwm
triode
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Application number
CN201510979058.XA
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Chinese (zh)
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CN105407614A (en
Inventor
施培源
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深圳市中孚光电科技有限公司
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Priority to CN201510979058.XA priority Critical patent/CN105407614B/en
Publication of CN105407614A publication Critical patent/CN105407614A/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
    • H05B47/10Controlling the light source

Abstract

The invention discloses a kind of adjusting control circuit provided with fan and turn-off function, including LED constant current source, PWM negater circuits, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, the LED lamp with fan;The constant-current source is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit respectively, it is connected in series again with band fan LED lamp, wherein speed regulation circuit for fan, light adjusting circuit, on-off circuit and PWM negater circuits connect, and the PWM negater circuits other end is connected with extraneous pwm signal device.The circuit structure of the present invention is simple, and component is considerably less, reduces loss and cost;PWM negater circuits therein can make pwm signal reverse, fan wind speed followed, dimmed with brightness and Push And Release can be carried out synchronously;Light adjusting circuit therein, the light modulation linearity is stable, and light modulation is accurate in scale;Push And Release circuit therein, loss are small;The additional divider resistance of speed regulation circuit for fan therein realizes PWM speed governing.

Description

A kind of adjusting control circuit provided with fan and turn-off function

Technical field

The present invention relates to adjusting control circuit, and in particular to a kind of adjusting control circuit provided with fan and turn-off function.

Background technology

Field of LED illumination constantly develops at present, with the lifting of technology, the radiating of product, high cost, intellectuality, electricity Source service life, energy saving turn into the development bottleneck in field, then expand a series of Development Schemes around this bottleneck, have increasing to dissipate Backing, the various dimming arrangements for making single-chip microcomputer and cut-out input power could realize Push And Release function etc., all unavoidably in cost High, wiring construction complexity, increase loss, dimming arrangement disunity.

The content of the invention

It is a primary object of the present invention to provide a kind of light modulation of fan and turn-off function provided with rotating speed and brilliant synchrotron Control circuit.It is connected by using light-adjusting modules such as the general PWM light modulating devices of in the market and WIFI, DALI with the present invention, It can realize that rotation speed of the fan follows brightness adjustment speed to be radiated, realizes precise proportions light modulation, realizes power supply Push And Release work(simultaneously Can and can more products it is synchronously used in parallel.

The technical solution adopted by the present invention is:A kind of adjusting control circuit provided with fan and turn-off function, including LED are permanent Stream source, PWM negater circuits, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, the LED lamp with fan; The constant-current source is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit respectively, then is connected in series with band fan LED lamp, Wherein speed regulation circuit for fan, light adjusting circuit, on-off circuit and PWM negater circuits connect, the PWM negater circuits other end and the external world Pwm signal device is connected.

Further, the PWM negater circuits include triode Q3, resistance R4, resistance R5, triode Q4, resistance R7, electricity Hinder R8;The Q3 base stages and R4 connections, colelctor electrode are connected with R5, and R5 other ends connection ground, the Q4 base stages are connected with R7, current collection Pole and it is connected with R8, R8 other ends connection ground.

Further, the light adjusting circuit includes transport and placing device U2, resistance R9;The transport and placing device U2 positive poles are connected with R9, U2 output ends are connected with negative pole, the outside PWM dim signals of R9 other ends connection.

Further, the on-off circuit includes metal-oxide-semiconductor Q2, voltage-regulator diode ZD1, triode Q1, resistance R1;It is described Metal-oxide-semiconductor Q2 drains to be connect with LED lamp series winding, and metal-oxide-semiconductor Q2 source electrodes are connected to ground;Resistance R1 is connected with metal-oxide-semiconductor Q2 grids, resistance R1 The other end is connected with VCC;The voltage-stabiliser tube ZD1 positive poles connecting triode Q2 grids, voltage-stabiliser tube ZD1 negative poles connection metal-oxide-semiconductor Q2 sources Pole;The triode Q1 colelctor electrodes are connected with Q2 grids, triode Q1 emitter stages connection metal-oxide-semiconductor Q2 source electrodes, triode Q1 base stages It is connected with pwm signal.

Further, the speed regulation circuit for fan include decompression chip U3A, electric capacity C60, C22, resistance R10, R11, R12, R13, diode D20, inductance L8A;The electric capacity C60 is in parallel with resistance R13;The resistance R10 connects with resistance R11 Afterwards, one end connection decompression chip U3A FB feedback pin, the other end are connected with reverse pwm signal;The diode D20 positive poles connect Connect decompression chip U3A three-prongs, diode D20 negative poles connection decompression chip the second pins of U3A;Described inductance L8A one end connects Decompression chip the second pins of U3A are connect, the other end connects resistance R13, electric capacity C60, electric capacity C22 positive poles respectively;The resistance R12 mono- End connects diode D20 positive poles, electric capacity C22 negative poles respectively, and the other end connects resistance R10, resistance R13, electric capacity C60 respectively.

Advantages of the present invention:

The circuit structure of the present invention is simple, and component is considerably less, reduces loss and cost;PWM negater circuits therein Pwm signal can be made reverse, fan wind speed followed, dimmed with brightness and Push And Release can be carried out synchronously;Light adjusting circuit therein, adjust Actinic degree is stable, and light modulation is accurate in scale;Push And Release circuit therein, loss are small;The additional partial pressure of speed regulation circuit for fan therein Resistance realizes PWM speed governing.

In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to figure, the present invention is further detailed explanation.

Brief description of the drawings

The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.

The structured flowchart of the adjusting control circuit for being provided with fan and turn-off function of Fig. 1 present invention;

The PWM negater circuit schematic diagrams of Fig. 2 present invention;

The light adjusting circuit schematic diagram of Fig. 3 present invention;

The on-off circuit schematic diagram of Fig. 4 present invention;

Speed regulation circuit for fan schematic diagram in Fig. 5 present invention.

Embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.

Referring to figs. 1 to Fig. 5, a kind of adjusting control circuit provided with fan and turn-off function as shown in Figures 1 to 5, bag Include LED constant current source, PWM negater circuits, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, with fan LED lamp;The constant-current source is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit respectively, then with band fan LED lamp It is connected in series, wherein speed regulation circuit for fan, light adjusting circuit, on-off circuit and PWM negater circuits connect, and PWM negater circuits are another End is connected with extraneous pwm signal device.

The PWM negater circuits include triode Q3, resistance R4, resistance R5, triode Q4, resistance R7, resistance R8;It is described Q3 base stages and R4 connections, colelctor electrode are connected with R5, and R5 other ends connection ground, the Q4 base stages are connected with R7, colelctor electrode and and R8 Connection, R8 other ends connection ground.

The light adjusting circuit includes transport and placing device U2, resistance R9;The transport and placing device U2 positive poles are connected with R9, and U2 output ends are with bearing Pole connects, the outside PWM dim signals of R9 other ends connection.

The on-off circuit includes metal-oxide-semiconductor Q2, voltage-regulator diode ZD1, triode Q1, resistance R1;The metal-oxide-semiconductor Q2 drain electrodes Connect with LED lamp series winding, metal-oxide-semiconductor Q2 source electrodes are connected to ground;Resistance R1 is connected with metal-oxide-semiconductor Q2 grids, the resistance R1 other ends and VCC Connection;The voltage-stabiliser tube ZD1 positive poles connecting triode Q2 grids, voltage-stabiliser tube ZD1 negative poles connection metal-oxide-semiconductor Q2 source electrodes;Three pole Pipe Q1 colelctor electrodes are connected with Q2 grids, and triode Q1 emitter stages connection metal-oxide-semiconductor Q2 source electrodes, triode Q1 base stages connect with pwm signal Connect.

The speed regulation circuit for fan includes being depressured chip U3A, electric capacity C60, C22, resistance R10, R11, R12, R13, two poles Pipe D20, inductance L8A;The electric capacity C60 is in parallel with resistance R13;After the resistance R10 connects with resistance R11, one end connection drop Chip U3A FB feedback pin are pressed, the other end is connected with reverse pwm signal;The diode D20 positive poles connection decompression chip U3A Three-prong, diode D20 negative poles connection decompression chip the second pins of U3A;Inductance L8A one end connection decompression chip U3A Second pin, the other end connect resistance R13, electric capacity C60, electric capacity C22 positive poles respectively;Described resistance R12 one end connects two respectively Pole pipe D20 positive poles, electric capacity C22 negative poles, the other end connect resistance R10, resistance R13, electric capacity C60 respectively.

With reference to figure 2, PWM negater circuit operation principles as shown in Figure 2:

When the 5V voltages of pwm signal enter R4, Q3 B poles are identical with E pole tensions, and Q3 is obstructed, R5 ground connection, and output is reverse 0V, when the 0V of pwm signal enters R4, there is voltage difference Q3 B poles and E poles, and are more than 0.7V, and Q3 conductings, R5 meets 5V, defeated Go out for reverse 5V, so that pwm signal is reverse in adjustment.Q4, R7, R8 operation principle are identical with this.

With reference to figure 3, light adjusting circuit operation principle as shown in Figure 3:(voltage follower circuit)

When pwm signal enters R9, carrying out voltage follow by U2 transport and placing devices strengthens pwm signal, makes the pwm signal of script It is not easy distortion, the REF of U2 outputs and the current reference point of constant-current source connect, and so as to accurately change output current, play tune Light action.

With reference to figure 4, on-off circuit figure operation principle as shown in Figure 4:

During normal work, VCC voltages enter R1 decompressions and enter metal-oxide-semiconductor Q2 grids, through voltage-regulator diode ZD1 voltage stabilizings, driving Metal-oxide-semiconductor Q2 is turned on, and LED lamp is opened and is lit;When reverse PWM is enabled, Q1 conductings, the voltage that R1 is entered to mos gate pole is drawn To arriving, on metal-oxide-semiconductor is cut, LED lamp shut-off breath goes out.Therefore when reverse PWM is enabled, LED is closed;When reverse PWM does not make During energy, LED is opened.

With reference to figure 5, speed regulation circuit for fan figure operation principle as shown in Figure 5:

U3A in this figure is the decompression chip that market leads to, and the pin FB of chip the 4th is feedback pin, can set output voltage size Powered for fan, in the present invention, R10, R11 are connected to reverse PWM in chip feedback pin, when reverse pwm signal enables dutycycle When becoming, into R10, R11 to feedback pin, so as to change set output voltage, rotation speed of the fan is changed, play Adjustment fan speed makes wind-force change.

The circuit structure of the present invention is simple, and component is considerably less, reduces loss and cost;PWM negater circuits therein Pwm signal can be made reverse, fan wind speed followed, dimmed with brightness and Push And Release can be carried out synchronously;Light adjusting circuit therein, adjust Actinic degree is stable, and light modulation is accurate in scale;Push And Release circuit therein, loss are small;The additional partial pressure of speed regulation circuit for fan therein Resistance realizes PWM speed governing.

The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.

Claims (5)

1. a kind of adjusting control circuit provided with fan and turn-off function, it is characterised in that reversely electric including LED constant current source, PWM Road, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, the LED lamp with fan;The constant-current source difference It is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit, then is connected in series with band fan LED lamp, wherein fan speed-regulating electricity Road, light adjusting circuit, on-off circuit and PWM negater circuits connect, and the PWM negater circuits other end is connected with extraneous pwm signal device Connect.
2. the adjusting control circuit according to claim 1 provided with fan and turn-off function, it is characterised in that the PWM Negater circuit includes triode Q3, resistance R4, resistance R5, triode Q4, resistance R7, resistance R8;The Q3 base stages and R4 connections, Colelctor electrode is connected with R5, and R5 other ends connection ground, the Q4 base stages are connected with R7, colelctor electrode and is connected with R8, R8 other ends company Ground connection.
3. the adjusting control circuit according to claim 1 provided with fan and turn-off function, it is characterised in that the light modulation Circuit includes transport and placing device U2, resistance R9;The transport and placing device U2 positive poles are connected with R9, and U2 output ends are connected with negative pole, the R9 other ends The outside PWM dim signals of connection.
4. the adjusting control circuit according to claim 1 provided with fan and turn-off function, it is characterised in that the switch Circuit includes metal-oxide-semiconductor Q2, voltage-regulator diode ZD1, triode Q1, resistance R1;The metal-oxide-semiconductor Q2 drain electrodes connect with LED lamp series winding, Metal-oxide-semiconductor Q2 source electrodes are connected to ground;Resistance R1 is connected with metal-oxide-semiconductor Q2 grids, and the resistance R1 other ends are connected with VCC;The voltage-stabiliser tube ZD1 positive pole connecting triode Q2 grids, voltage-stabiliser tube ZD1 negative poles connection metal-oxide-semiconductor Q2 source electrodes;The triode Q1 colelctor electrodes and Q2 grid Pole is connected, and triode Q1 emitter stages connection metal-oxide-semiconductor Q2 source electrodes, triode Q1 base stages are connected with pwm signal.
5. according to any described adjusting control circuits for being provided with fan and turn-off function of claim 1-4, it is characterised in that institute Stating speed regulation circuit for fan includes being depressured chip U3A, electric capacity C60, C22, resistance R10, R11, R12, R13, diode D20, inductance L8A;The electric capacity C60 is in parallel with resistance R13;After the resistance R10 connects with resistance R11, one end connection decompression chip U3A's FB feeds back pin, and the other end is connected with reverse pwm signal;The diode D20 positive poles connection decompression chip U3A three-prongs, two Pole pipe D20 negative poles connection decompression chip the second pins of U3A;Inductance L8A one end connection decompression chip second pins of U3A, separately One end connects resistance R13, electric capacity C60, electric capacity C22 positive poles respectively;Described resistance R12 one end connect respectively diode D20 positive poles, Electric capacity C22 negative poles, the other end connect resistance R10, resistance R13, electric capacity C60 respectively.
CN201510979058.XA 2015-12-23 2015-12-23 A kind of adjusting control circuit provided with fan and turn-off function CN105407614B (en)

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Application Number Priority Date Filing Date Title
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CN105407614B true CN105407614B (en) 2017-12-29

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CN107682969B (en) * 2017-10-27 2020-01-10 深圳市银河风云网络系统股份有限公司 Dimming method and system

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US8502461B2 (en) * 2010-05-25 2013-08-06 Green Solution Technology Co., Ltd. Driving circuit and control circuit
TWM413972U (en) * 2010-12-14 2011-10-11 Mactech Corp Ion balance Regulating device
CN203120230U (en) * 2013-01-07 2013-08-07 盐城工学院 Led street lamp controller
US9661697B2 (en) * 2013-03-14 2017-05-23 Laurence P. Sadwick Digital dimmable driver
CN205249580U (en) * 2015-12-23 2016-05-18 深圳市中孚光电科技有限公司 Light modulation control circuit with fan and shutoff function

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