CN210033925U - Fan speed regulating device and fan equipment - Google Patents
Fan speed regulating device and fan equipment Download PDFInfo
- Publication number
- CN210033925U CN210033925U CN201822268496.7U CN201822268496U CN210033925U CN 210033925 U CN210033925 U CN 210033925U CN 201822268496 U CN201822268496 U CN 201822268496U CN 210033925 U CN210033925 U CN 210033925U
- Authority
- CN
- China
- Prior art keywords
- fan
- power supply
- resistor
- signal
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
An embodiment of the utility model provides a fan speed adjusting device and fan equipment, this fan speed adjusting device include fan speed governing circuit, input interface and output interface, fan speed governing circuit's first input is connected input interface, second input are used for receiving elementary fan power supply signal, and the output is connected output interface, input interface is used for receiving fan speed governing signal, output interface connects the power input end of fan, fan speed governing circuit is used for the basis fan speed governing signal is right elementary fan power supply signal carries out the step-down processing, generates target fan power supply signal and exports, can reduce the operating voltage of fan promptly according to the load factor automatically regulated elementary fan power supply signal of consumer, reduces the power consumption of fan and the waste of electric energy.
Description
Technical Field
The embodiment of the utility model provides a relate to electron electrical technology field, especially relate to a fan speed adjusting device and fan equipment.
Background
In the field of electrical and electronic technology, as the conversion capability of a power circuit is increased, the power consumption is increased, and the electric equipment can generate larger heat, so that the electric equipment needs to dissipate heat.
At present, the heat of the electric equipment is generally dissipated by a fan. The fan rotates under a fixed input voltage, and the rotating speed of the fan is constant due to the fixed voltage, so that the fan is always in a higher rotating speed.
However, the inventors found that at least the following problems exist in the prior art: when the heat dissipation capacity required by the electric equipment is small, the rotating speed of the fan is unchanged and still stays at a high rotating speed, and the power consumption of the fan is high, so that the waste of electric energy is caused.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a fan speed adjusting device and fan equipment to reduce the power consumption of fan and the waste of electric energy.
In a first aspect, an embodiment of the present invention provides a fan speed adjusting device, including: the fan speed regulating circuit comprises a fan speed regulating circuit, an input interface and an output interface;
the fan speed regulating circuit is characterized in that a first input end of the fan speed regulating circuit is connected with the input interface, a second input end of the fan speed regulating circuit is used for receiving a primary fan power supply signal, and an output end of the fan speed regulating circuit is connected with the output interface;
the input interface is used for receiving a fan speed regulation signal, wherein the fan speed regulation signal is related to the load rate of the electric equipment;
the output interface is connected with the power supply input end of the fan;
and the fan speed regulating circuit is used for carrying out voltage reduction processing on the primary fan power supply signal according to the fan speed regulating signal, generating a target fan power supply signal and outputting the target fan power supply signal.
Optionally, the fan speed regulation circuit includes an inductor, a first diode, a field effect transistor, and a first capacitor;
the grid electrode of the field effect tube is connected with the input interface, the drain electrode of the field effect tube receives the power supply signal of the primary fan through the first diode, and the source electrode of the field effect tube is grounded;
one end of the inductor is used for receiving the power supply signal of the primary fan, and the other end of the inductor is connected with the output interface;
the anode of the first capacitor is connected with the output interface, and the cathode of the first capacitor and the cathode of the first diode are both connected with a fan to supply negative voltage.
Optionally, the fan speed regulation circuit further includes: the circuit comprises a first resistor, a second resistor, a first optical coupler, a first voltage stabilizing diode, a third resistor, a fourth resistor and a fifth resistor;
the input interface is connected with the primary side input end of the first optical coupler through the first resistor; the second resistor is connected in parallel with the primary side of the first optical coupler;
a first secondary output end of the first optical coupler is connected with a power supply signal of the primary fan through the first voltage stabilizing diode, a second secondary output end of the first optical coupler is connected with a grid electrode of the field effect transistor through the fifth resistor, and a third secondary output end of the first optical coupler is grounded;
one end of the third resistor is connected with the grid electrode of the field effect transistor, and the other end of the third resistor is grounded;
one end of the fourth resistor is connected with the source electrode of the field effect transistor, and the other end of the fourth resistor is grounded.
Optionally, the system further comprises a fan power supply circuit;
the fan power supply circuit is connected with the fan speed regulating circuit and used for generating the primary fan power supply signal and outputting the primary fan power supply signal to the fan speed regulating circuit.
Optionally, the fan power supply circuit includes a power supply unit, a power supply interface, and a second capacitor;
the power supply unit is connected with the fan speed regulating circuit through the power supply interface;
the anode of the second capacitor is used for receiving the power supply signal of the primary fan, and the cathode of the second capacitor is grounded.
Optionally, the fan alarm circuit is further included:
the fan alarm circuit is connected with the central processing unit and used for receiving an initial fan alarm signal and outputting a target fan alarm signal to the central processing unit so that the central processing unit triggers an alarm.
Optionally, the fan alarm circuit includes a second zener diode, a sixth resistor, a third capacitor, a second diode, a third diode, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a triode, a second optical coupler, a fourth capacitor, and a fifth capacitor;
the second diode and the third diode are connected in parallel, the anode of the parallel connection receives the initial fan alarm signal, and the cathode of the parallel connection is connected with the base electrode of the triode through the seventh resistor;
a collector of the triode sequentially receives the target fan power supply signal through an eighth resistor and the ninth resistor, and an emitter of the triode is connected with a fan power supply negative voltage;
the primary side of the second optical coupler is connected with the eighth resistor in parallel, the secondary side input end is used for receiving an alarm input power supply signal, and the secondary side output end outputs the target fan alarm signal to the central processing unit;
the anode of the third capacitor receives the alarm input power supply signal, and the cathode of the third capacitor receives the target fan alarm signal;
the anode of the fourth capacitor receives the initial fan alarm signal, and the cathode of the fourth capacitor is connected with a negative power supply voltage of the fan;
the cathode of the second voltage-stabilizing diode receives the target fan power supply signal, and the anode of the second voltage-stabilizing diode is respectively connected with the anode of the second diode and the anode of the third diode through a sixth resistor;
one end of the tenth resistor is connected with the base electrode of the triode, the other end of the tenth resistor is connected with a fan power supply negative voltage, and the fifth capacitor is connected with the tenth resistor in parallel.
Optionally, the first capacitor is a polar capacitor.
Optionally, the apparatus further comprises a modulation signal generation module;
and the modulation signal generation module is connected with the input interface and used for generating and outputting the fan speed regulation signal according to the load rate.
In a second aspect, the embodiment of the present invention further provides a fan apparatus, which includes a fan and the fan speed adjusting device as described above.
The embodiment of the utility model provides a fan speed adjusting device, the device includes fan speed adjusting circuit, input interface and output interface, the first input end of fan speed adjusting circuit is connected the input interface, and the second input end is used for receiving elementary fan power supply signal, and the output end is connected the output interface, the input interface is used for receiving fan speed adjusting signal, wherein, fan speed adjusting signal is relevant with the load factor of consumer; the output interface is connected with a power input end of the fan, the fan speed regulating circuit is used for carrying out voltage reduction processing on the primary fan power supply signal according to the fan speed regulating signal, generating and outputting a target fan power supply signal, and the primary fan power supply signal can be automatically regulated according to the load rate of the electric equipment, namely, the working voltage of the fan is reduced, and the power consumption of the fan and the waste of electric energy are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of a fan speed adjusting device according to an embodiment of the present invention;
fig. 2 is a diagram illustrating an implementation manner of a fan speed regulation circuit according to an embodiment of the present invention;
fig. 3 is another implementation manner of the fan speed regulation circuit provided in the embodiment of the present invention;
fig. 4 is an implementation manner of the power supply circuit for a fan according to an embodiment of the present invention;
fig. 5 is a diagram illustrating an implementation manner of a fan power supply circuit according to an embodiment of the present invention.
Description of reference numerals:
1: a fan speed regulation circuit;
j1: an input interface;
j2: an output interface;
l1: an inductance;
d1: a first diode;
q1: a field effect transistor;
c1: a first capacitor;
r1: a first resistor;
r2: a second resistor;
r3: a third resistor;
r4: a fourth resistor;
r5: a fifth resistor;
OP 1: a first optical coupler;
d2: a first zener diode;
2: power supply circuit for fan
E1: a power supply unit;
j3: a power supply interface;
c2: a second capacitor;
3: a fan alarm circuit;
the CPU 1: a central processing unit;
d3: a second zener diode;
r6: a sixth resistor;
c3: a third capacitor;
d4: a second diode;
d5: a third diode;
r7: a seventh resistor;
r8: an eighth resistor;
r9: a ninth resistor;
r10: a tenth resistor;
q2: a triode;
OP 2: a second optical coupler;
c4: a fourth capacitor;
c5: a fifth capacitor;
FAN-GND: the fan supplies negative voltage;
GND: and (4) grounding.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic view of a fan speed adjusting device according to an embodiment of the present invention, and as shown in fig. 1, the fan speed adjusting device according to this embodiment includes a fan speed adjusting circuit 1, an input interface J1, and an output interface J2;
the fan speed regulating circuit 1 has a first input end connected to the input interface J1, a second input end for receiving a primary fan power supply signal, and an output end connected to the output interface J2;
the input interface J1 is used for receiving a fan speed regulation signal, wherein the fan speed regulation signal is related to the load rate of the electric equipment;
the output interface J2 is connected with the power supply input end of the fan;
and the fan speed regulating circuit 1 is used for carrying out voltage reduction processing on the primary fan power supply signal according to the fan speed regulating signal, generating a target fan power supply signal and outputting the target fan power supply signal.
In this embodiment, the fan speed regulation circuit obtains a primary power supply signal and a fan speed regulation signal, the fan speed regulation signal is related to the load factor of the electrical equipment, and the fan speed regulation circuit processes the primary power supply signal according to the fan speed regulation signal, that is, performs voltage reduction processing on the primary power supply signal under the condition of low load factor, so as to reduce the working voltage of the fan, thereby reducing the rotation speed of the fan and avoiding unnecessary power consumption loss of the fan.
Optionally, the fan speed adjusting device provided in the embodiment of the present invention further includes a modulation signal generating module;
the modulation signal generation module is connected with the input interface J1 and is used for generating and outputting the fan speed regulation signal according to the load rate.
In this embodiment, the fan speed control signal is a pulse width modulation signal.
In this embodiment, when the electrical device operates at low power, the load rate is low, and the generated heat is less, so that the required air volume is less, the modulation signal module obtains the current load rate, and generates a corresponding fan speed regulation signal according to the load rate.
In this embodiment, a corresponding fan speed regulation signal is generated according to the load factor of the electrical equipment, when the load factor is low, the fan speed regulation circuit performs voltage reduction processing on a primary fan power supply signal according to the fan speed regulation signal, generates a target fan power supply signal and outputs the target fan power supply signal to the power input end of the fan, and the working voltage of the fan is reduced, so that the rotating speed of the fan can be reduced, unnecessary electric energy loss is reduced, and noise caused by high-speed operation of the fan can be reduced.
Fig. 2 is a diagram illustrating an implementation manner of the fan speed regulation circuit 1 according to an embodiment of the present invention, and as shown in fig. 2, the fan speed regulation circuit 1 includes an inductor L1, a first diode D1, a field effect transistor Q1, and a first capacitor C1;
the grid electrode of the field effect transistor Q1 is connected with the input interface J1, the drain electrode of the field effect transistor Q1 receives the primary fan power supply signal through the first diode D1, and the source electrode of the field effect transistor Q1 is grounded;
one end of the inductor L1 is used for receiving the primary fan power supply signal, and the other end of the inductor L1 is connected with the output interface J2;
the anode of the first capacitor C1 is connected to the output interface J2, and the cathode of the first diode D1 and the cathode of the first capacitor C1 are both connected to a negative voltage supplied by a fan.
Optionally, the first capacitor C1 is a polar capacitor.
In the embodiment, assuming that the voltage value of the primary fan power supply signal is 24V, when the fan speed control signal is at a high level, the fet Q1 is turned on, and the voltage across the first capacitor E1 is about 24V, and the duration of the low level of the fan speed control signal is T1. When the fan speed-regulating signal is at low level, the fet Q1 is turned off, the voltage across the first capacitor E1 is about 0V, and the duration of the high level of the fan speed-regulating signal is T2Therefore, the period T is T1+T2The average voltage across the first capacitor E1, i.e. the target fan supply signal voltage value, is about U during the period T0＝U1*(T1/T), wherein U0Supply voltage value, U, of target fan1The voltage value of the power supply signal for the primary fan is known by the formula1The average value of the input voltage of the fan can be adjusted by the size of the/T, and the rotating speed of the fan is further adjusted.
In this embodiment, the duration of the low level and the high level is controlled according to the current load rate, so as to generate the corresponding fan speed regulation signal.
Optionally, the optical coupler may be further used to process the fan speed control signal, so that when the fan speed control signal is at a low level, the fet Q1 is turned on, and when the fan speed control signal is at a high level, the fet Q2 is turned off.
Fig. 3 is another implementable manner of the fan speed regulation circuit 1 according to the embodiment of the present invention, as shown in fig. 3, the fan speed regulation circuit 1 further includes a first resistor R1, a second resistor R2, a first optical coupler OP1, a first zener diode D2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5;
the input interface J1 is connected to the primary input terminal of the first optocoupler OP1 through the first resistor R1; the second resistor R2 is connected in parallel with the primary side of the first optocoupler OP 1;
a first secondary output end of the first optocoupler OP1 receives the primary fan power supply signal through the first zener diode D2, a second secondary output end is connected with the gate of the field effect transistor Q1 through the fifth resistor R5, and a third secondary output end is grounded;
one end of the third resistor R3 is connected with the grid of the field effect transistor Q1, and the other end is grounded;
one end of the fourth resistor R4 is connected with the source electrode of the field effect transistor Q1, and the other end is grounded.
In the present embodiment, the first optical coupler OP1 functions as optical coupling isolation.
In this embodiment, the fan speed regulation circuit is a step-down chopper circuit.
Optionally, the fan speed adjusting device provided in this embodiment may further include a fan power supply circuit 2;
and the fan power supply circuit 2 is connected with the fan speed regulating circuit 1 and used for generating the primary fan power supply signal and outputting the primary fan power supply signal to the fan speed regulating circuit 1.
In this embodiment, the fan power supply circuit is operative to provide a stable primary fan power supply signal to the fan speed control circuit.
In this embodiment, assuming that the voltage value of the primary fan power supply signal is 24V, when the fan speed control signal is at a low level, the second secondary output terminal of the first optocoupler OP1 outputs a high level, the fet Q1 is turned on, the voltage across the first capacitor E1 is about 24V, and the duration of the low level of the fan speed control signal is T1. When the fan speed-regulating signal is at high level, the second secondary output end of the first optical coupler OP1 outputs low level, the field effect transistor Q1 is cut off, the voltage at the two ends of the first capacitor E1 is about 0V, and the duration of the fan speed-regulating signal at high level is T2Therefore, the period T is T1+T2The average voltage across the first capacitor E1, i.e. the target fan supply signal voltage value, is about U during the period T0＝U1*(T1/T), wherein U0Supply voltage value, U, of target fan1The voltage value of the power supply signal for the primary fan is known by the formula1The average value of the input voltage of the fan can be adjusted by the size of the/T, and the rotating speed of the fan is further adjusted.
In this embodiment, when the load factor is higher, the duration of the high level in the fan speed regulation signal can be controlled to be shorter, and when the load factor is lower, the duration of the low level in the fan speed regulation signal can be controlled to be longer, so that the working voltage of the fan can be adjusted according to the low power of the electric equipment, when the load factor is high, the rotating speed of the fan is increased, and when the load factor is low, the rotating speed of the fan is reduced, and the power consumption of the fan is reduced.
Fig. 4 is an implementation manner of the fan power supply circuit 2 according to the embodiment of the present invention, as shown in fig. 4, the fan power supply circuit 2 includes a power supply unit E1, a power supply interface J3, and a second capacitor C2;
the power supply unit E1 is connected with the fan speed regulation circuit 1 through the power supply interface J3;
the anode of the second capacitor C2 is used for receiving the primary fan power supply signal, and the cathode is grounded.
Optionally, the second capacitor may be a polar capacitor.
Optionally, the fan speed adjusting device provided in this embodiment may further include a fan alarm circuit 3:
the fan alarm circuit 3 is connected to the CPU1, and configured to receive an initial fan alarm signal and output a target fan alarm signal to the CPU1, so that the CPU1 triggers an alarm.
In this embodiment, the fan alarm circuit generates a corresponding target fan alarm signal to the central processing unit according to the initial fan alarm signal, the central processing unit identifies the target fan alarm signal, and if the target fan alarm signal is detected to be effective, the corresponding alarm device is triggered to alarm, so that related personnel can find problems in time when the fan goes wrong, and the electric equipment is prevented from being damaged due to overhigh temperature.
Fig. 5 is an implementable manner of the fan alarm circuit 3 provided by the embodiment of the present invention, as shown in fig. 5, the fan alarm circuit 3 includes a second zener diode D3, a sixth resistor R6, a third capacitor C3, a second diode D4, a third diode D5, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a triode Q2, a second optical coupler OP2, a fourth capacitor C4, and a fifth capacitor C5;
the second diode D4 and the third diode D5 are connected in parallel, the anode of the parallel connection receives the initial fan alarm signal, and the cathode of the parallel connection is connected with the base electrode of the triode Q2 through the seventh resistor R7;
the collector of the triode Q2 sequentially passes through an eighth resistor R8 and the ninth resistor R9 to receive the target fan power supply signal, and the emitter of the triode Q2 is connected with a fan power supply negative voltage;
the primary side of the second optical coupler OP2 is connected in parallel with the eighth resistor R8, the secondary side input end is used for receiving an alarm input power supply signal, and the secondary side output end outputs the target fan alarm signal to the central processing unit CPU 1;
the anode of the third capacitor C3 receives the alarm input power signal and the cathode receives the target fan alarm signal;
the anode of the fourth capacitor C4 receives the initial fan alarm signal, and the cathode is connected with a negative fan power supply voltage;
the cathode of the second zener diode D3 receives the target fan power signal, and the anode is connected to the anode of the second diode D4 and the anode of the third diode D5 through a sixth resistor R6, respectively;
one end of the tenth resistor R10 is connected with the base of the triode Q2, the other end of the tenth resistor R10 is connected with a negative voltage supplied by a fan, and the fifth capacitor C5 is connected with the tenth resistor R10 in parallel.
In the present embodiment, the second optical coupler OP2 functions as optical coupling isolation.
In this embodiment, the fan alarm circuit is used for outputting an effective alarm signal to the central processing unit when the fan fails, so that the central processing unit triggers the related alarm device to alarm the fan failure, and related personnel can timely know that the fan is abnormal.
In this embodiment, when the fan operates normally, the primary fan alarm signal is at a low level, the base of the transistor Q2 is at a low level, the transistor Q2 is in a cut-off state, there is no voltage difference between the secondary input end and the secondary output end of the second optical coupler OP2, the secondary output end of the second optical coupler OP2 is cut off, the target fan alarm signal is at a low level, and the fan has no fault and alarms. When the fan is in fault, the primary fan alarm signal is at high level, the base of the triode Q2 is at high level, at this time, the triode Q2 is in a conducting state, the eighth resistor R8 and the ninth resistor R9 divide voltage, therefore, the primary side input end and the primary side output end of the second optical coupler OP2 have a voltage difference, the secondary side output end of the second optical coupler OP2 is conducting, the target fan alarm signal is at high level, and when the central processing unit recognizes that the target alarm signal is at high level, the alarm is triggered.
The embodiment of the utility model provides a still provide a fan equipment, including the fan with as above fan speed adjusting device.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A fan governor device, comprising: the fan speed regulating circuit comprises a fan speed regulating circuit, an input interface and an output interface;
the fan speed regulating circuit is characterized in that a first input end of the fan speed regulating circuit is connected with the input interface, a second input end of the fan speed regulating circuit is used for receiving a primary fan power supply signal, and an output end of the fan speed regulating circuit is connected with the output interface;
the input interface is used for receiving a fan speed regulation signal, wherein the fan speed regulation signal is related to the load rate of the electric equipment;
the output interface is connected with the power supply input end of the fan;
and the fan speed regulating circuit is used for carrying out voltage reduction processing on the primary fan power supply signal according to the fan speed regulating signal, generating a target fan power supply signal and outputting the target fan power supply signal.
2. The apparatus of claim 1, wherein the fan speed control circuit comprises an inductor, a first diode, a field effect transistor, and a first capacitor;
the grid electrode of the field effect tube is connected with the input interface, the drain electrode of the field effect tube receives the power supply signal of the primary fan through the first diode, and the source electrode of the field effect tube is grounded;
one end of the inductor is used for receiving the power supply signal of the primary fan, and the other end of the inductor is connected with the output interface;
the anode of the first capacitor is connected with the output interface, and the cathode of the first capacitor and the cathode of the first diode are both connected with a fan to supply negative voltage.
3. The apparatus of claim 2, wherein the fan speed regulation circuit further comprises: the circuit comprises a first resistor, a second resistor, a first optical coupler, a first voltage stabilizing diode, a third resistor, a fourth resistor and a fifth resistor;
the input interface is connected with the primary side input end of the first optical coupler through the first resistor; the second resistor is connected in parallel with the primary side of the first optical coupler;
a first secondary output end of the first optical coupler receives the power supply signal of the primary fan through the first voltage stabilizing diode, a second secondary output end of the first optical coupler is connected with a grid electrode of the field effect transistor through the fifth resistor, and a third secondary output end of the first optical coupler is grounded;
one end of the third resistor is connected with the grid electrode of the field effect transistor, and the other end of the third resistor is grounded;
one end of the fourth resistor is connected with the source electrode of the field effect transistor, and the other end of the fourth resistor is grounded.
4. The device of claim 1, further comprising a fan power supply circuit;
the fan power supply circuit is connected with the fan speed regulating circuit and used for generating the primary fan power supply signal and outputting the primary fan power supply signal to the fan speed regulating circuit.
5. The apparatus of claim 4, wherein the fan power supply circuit comprises a power supply unit, a power supply interface, and a second capacitor;
the power supply unit is connected with the fan speed regulating circuit through the power supply interface;
the anode of the second capacitor is used for receiving the power supply signal of the primary fan, and the cathode of the second capacitor is grounded.
6. The apparatus of claim 1, further comprising a fan alarm circuit:
the fan alarm circuit is connected with the central processing unit and used for receiving an initial fan alarm signal and outputting a target fan alarm signal to the central processing unit so that the central processing unit triggers an alarm.
7. The device of claim 6, wherein the fan alarm circuit comprises a second zener diode, a sixth resistor, a third capacitor, a second diode, a third diode, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a triode, a second optocoupler, a fourth capacitor, and a fifth capacitor;
the second diode and the third diode are connected in parallel, the anode of the parallel connection receives the initial fan alarm signal, and the cathode of the parallel connection is connected with the base electrode of the triode through the seventh resistor;
a collector of the triode sequentially receives the target fan power supply signal through an eighth resistor and the ninth resistor, and an emitter of the triode is connected with a fan power supply negative voltage;
the primary side of the second optical coupler is connected with the eighth resistor in parallel, the secondary side input end is used for receiving an alarm input power supply signal, and the secondary side output end outputs the target fan alarm signal to the central processing unit;
the anode of the third capacitor receives the alarm input power supply signal, and the cathode of the third capacitor receives the target fan alarm signal;
the anode of the fourth capacitor receives the initial fan alarm signal, and the cathode of the fourth capacitor is connected with a negative power supply voltage of the fan;
the cathode of the second voltage-stabilizing diode receives the target fan power supply signal, and the anode of the second voltage-stabilizing diode is respectively connected with the anode of the second diode and the anode of the third diode through a sixth resistor;
one end of the tenth resistor is connected with the base electrode of the triode, the other end of the tenth resistor is connected with a fan power supply negative voltage, and the fifth capacitor is connected with the tenth resistor in parallel.
8. The apparatus of claim 2, wherein the first capacitance is a polar capacitance.
9. The apparatus of claim 1, further comprising a modulated signal generation module;
and the modulation signal generation module is connected with the input interface and used for generating and outputting the fan speed regulation signal according to the load rate.
10. A fan apparatus comprising a fan and a fan governor as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268496.7U CN210033925U (en) | 2018-12-29 | 2018-12-29 | Fan speed regulating device and fan equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268496.7U CN210033925U (en) | 2018-12-29 | 2018-12-29 | Fan speed regulating device and fan equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210033925U true CN210033925U (en) | 2020-02-07 |
Family
ID=69343819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822268496.7U Active CN210033925U (en) | 2018-12-29 | 2018-12-29 | Fan speed regulating device and fan equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210033925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111240451A (en) * | 2020-03-06 | 2020-06-05 | 维沃移动通信有限公司 | Heat dissipation method, electronic device and computer-readable storage medium |
-
2018
- 2018-12-29 CN CN201822268496.7U patent/CN210033925U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111240451A (en) * | 2020-03-06 | 2020-06-05 | 维沃移动通信有限公司 | Heat dissipation method, electronic device and computer-readable storage medium |
| CN111240451B (en) * | 2020-03-06 | 2021-12-10 | 维沃移动通信有限公司 | Heat dissipation method, electronic device and computer-readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11799285B2 (en) | Method for starting photovoltaic rapid shutdown system, application apparatus and system | |
| CN102111070B (en) | The regulator over-voltage protection circuit that standby current reduces | |
| US9309887B2 (en) | System and method of remotely connecting and disconnecting the auxiliary power supply of a frequency inverter for variable capacity compressor employed in cooling systems | |
| WO2018006769A1 (en) | Hysteresis power supply circuit | |
| CN108847835B (en) | Power device driving protection circuit and control method thereof | |
| CN210033925U (en) | Fan speed regulating device and fan equipment | |
| KR102215378B1 (en) | Protection circuit and LED driving circuit | |
| CN104682352A (en) | Improved power management device | |
| CN111416333A (en) | Power supply reverse connection prevention method and power supply reverse connection prevention circuit | |
| CN115378228A (en) | Ozone generating circuit, ozone generating method and milk mixing sterilizer | |
| CN114448271A (en) | Power supply circuit | |
| KR20160057079A (en) | Over Voltage Protection Circuit for protecting Switching Element for Supplying Power | |
| CN113991611A (en) | Switching power supply and protection circuit thereof | |
| CN208174537U (en) | A kind of regulated power supply management system of high reliablity | |
| CN110374899B (en) | Fan suitable for ultra-wide voltage range | |
| CN111697536A (en) | Motor control device with dual over-temperature protection | |
| CN218216676U (en) | Rotating speed protection circuit | |
| CN214125268U (en) | State monitoring circuit and variable frequency microwave oven | |
| CN221978805U (en) | Step-down circuit and electronic equipment | |
| CN216625579U (en) | PWM control chip power supply circuit and switching power supply | |
| CN221151606U (en) | LED constant current control circuit, control equipment, LED equipment and integrated circuit | |
| CN111327212A (en) | Rectification anti-surge voltage stabilizing circuit | |
| CN217950745U (en) | Fan speed regulating circuit and electronic equipment with adjustable fan | |
| CN212137693U (en) | Power supply circuit | |
| CN220556708U (en) | Power output protection device and power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |