CN216310067U - Clamp for verifying and controlling rotating speed of fan - Google Patents
Clamp for verifying and controlling rotating speed of fan Download PDFInfo
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- CN216310067U CN216310067U CN202122761244.XU CN202122761244U CN216310067U CN 216310067 U CN216310067 U CN 216310067U CN 202122761244 U CN202122761244 U CN 202122761244U CN 216310067 U CN216310067 U CN 216310067U
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Abstract
A jig for verifying the rotation speed of a fan. The product comprises a circuit board PCB, wherein a 4PIN FAN seat FAN is installed on the circuit board PCB, a 1 PIN of the 4PIN FAN seat FAN is connected with a diode D1 and a diode D2, the diode D1 is connected with a 9V external power supply VCC, a diode D2 is connected with a MOS tube Q2, a MOS tube Q2 is connected with a resistor R5 and a resistor R4, a resistor R4 is connected with a triode Q1, a triode Q1 is connected with a resistor R3 and a capacitor C3, a resistor R3 is connected with a resistor R1 and a resistor R2, a resistor R2 is connected with a capacitor C3, a resistor R1 is connected with a 3.3V external power supply VCC, a resistor R3 is connected with a control signal control A, a MOS tube Q2 is connected with a capacitor C2 and a capacitor C1, a MOS tube Q2 is connected with a 12V external power supply VCC, and the capacitor C1 is connected with the capacitor C2 in parallel. The utility model is used for verifying the capability of the fan rotating speed switching function whether to work normally or not and the circuit whether to work normally or not.
Description
The technical field is as follows:
the utility model relates to a clamp for verifying and controlling the rotating speed of a fan.
Background art:
generally, 4PIN fans are all constant-speed, if the high-low gear rotating speed is switched, different voltages need to be supplied to the fans, namely 9V and 12V are switched to control the high-low gear rotating speed of the fans, and how to verify whether the rotating speed function of the fans can work normally is a problem to be solved.
The utility model content is as follows:
the utility model aims to provide a clamp for verifying and controlling the rotating speed of a fan, which is convenient to operate, low in cost and high in cost performance, and a clamp circuit is also convenient to manufacture.
The above purpose is realized by the following technical scheme:
a clamp for verifying and controlling the rotating speed of a FAN comprises a circuit board PCB, wherein a 4PIN FAN seat FAN is installed on the circuit board PCB, a 1 PIN of the 4PIN FAN seat FAN is connected with a diode D1 and a diode D2, the diode D1 is connected with a 9V external power supply VCC, the diode D2 is connected with a MOS tube Q2, the MOS tube Q2 is connected with a resistor R5 and a resistor R4, the resistor R4 is connected with a triode Q1, the triode Q1 is connected with a resistor R3 and a capacitor C3, the resistor R3 is connected with a resistor R1 and a resistor R2, the resistor R2 is connected with the capacitor C3, the resistor R1 is connected with a 3.3V external power supply VCC, the resistor R3 is connected with a control signal control A, the MOS tube Q2 is connected with a capacitor C2 and a capacitor C1, and the MOS tube Q2 is connected with the external power supply VCC 2 and the capacitor C1 in parallel.
The 4PIN FAN seat FAN is provided with 4 PINs, wherein 1 PIN is a power supply PIN, 2 PINs and 3 PINs are suspended PINs and are not used, and 4 PINs are grounding PINs.
Has the advantages that:
1. the utility model can realize the control of the switching of the rotating speed of the fan by switching the voltage, carry out verification, verify whether the rotating speed function of the fan can work normally or not, and improve the stability of the rotating speed function of the fan.
2. According to the utility model, the control A signal is used for controlling the Q1 to be repeatedly switched on and off, whether the rotating speed of the fan can realize high-low gear rotating speed switching is observed, the function of controlling the rotating speed of the fan is realized, the cost is low, and the operation is convenient.
3. The utility model is easy to realize, can verify whether the high-low gear rotating speed function of the fan can work normally, has low cost and has high cost performance.
Description of the drawings:
fig. 1 is a control circuit diagram of the product.
The specific implementation mode is as follows:
the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
Example 1:
a clamp for verifying and controlling the rotating speed of a FAN comprises a circuit board PCB, wherein a 4PIN FAN seat FAN is installed on the circuit board PCB, a 1 PIN of the 4PIN FAN seat FAN is connected with a diode D1 and a diode D2, the diode D1 is connected with a 9V external power supply VCC, the diode D2 is connected with a MOS tube Q2, the MOS tube Q2 is connected with a resistor R5 and a resistor R4, the resistor R4 is connected with a triode Q1, the triode Q1 is connected with a resistor R3 and a capacitor C3, the resistor R3 is connected with a resistor R1 and a resistor R2, the resistor R2 is connected with the capacitor C3, the resistor R1 is connected with a 3.3V external power supply VCC, the resistor R3 is connected with a control signal control A, the MOS tube Q2 is connected with a capacitor C2 and a capacitor C1, and the MOS tube Q2 is connected with the external power supply VCC 2 and the capacitor C1 in parallel.
Example 2:
in the jig for verifying and controlling the rotational speed of the FAN in embodiment 1, the 4-PIN FAN base FAN has 4 PINs, where 1 PIN is a power supply PIN, 2 PINs and 3 PINs are suspended PINs and are not used, and 4 PINs are ground PINs.
Example 3:
in the above-described embodiment, in the fixture for verifying and controlling the rotation speed of the fan, the 12V external power VCC and the 9V external power VCC are supplied with power by the external power supply, and provide input voltage, and both are used for supplying power to the 4PIN fan, where the 12V external power VCC is controlled voltage, and the 3.3V external power VCC is used for pull-up power processing for the control signal.
The control circuit part principle is that a control signal controlA is a control signal for a triode Q1, the high and low levels are controlled by an external circuit, a resistor R1 and a resistor R2 are voltage division resistors, the resistance values of the resistor R1 and the resistor R2 are both 4.7K ohms, voltage division processing is carried out through a 3.3V external power supply VCC, a resistor R3 is a current limiting resistor, the resistance value is 1K ohm, a capacitor C3 is 0.1uf, interference signals are filtered, the resistor Q1 is a triode and is used as a switch and connected with the resistor R4, a resistor R4 is also a current limiting resistor, the resistance value is 1K ohm and is used for controlling a MOS tube Q2 and controlling an MOS tube Q2, so that the switching of fan voltage of a 12V external power supply VCC and a 9V external power supply VCC is realized, the switching of the rotating speed of the fan is realized, the capacitor C1 and the capacitor C2 are a filter capacitor of the 12V external power supply, the capacitor C1 and the capacitor C2 are respectively 0.1uf and 10uf, the stabilizing resistor R5 is used as a voltage source and a grid source. The resistance value is 10K ohm, and D1 and D2 are diodes which are respectively used as a 9V external power supply VCC and a 12V external power supply VCC for unidirectional conduction to prevent reverse current.
Example 4:
as shown in fig. 1, the circuit board fixture according to the above embodiment is composed of a circuit board PCB, a 4PIN FAN base FAN, a capacitor, a resistor, a diode, a triode, a MOS transistor Q2, and the like, and is used for verifying the capability of the FAN rotation speed switching function and whether the circuit can work normally.
When the circuit board clamp scheme is used for verification, firstly, a 4PIN fan is inserted on the circuit board PCB clamp and supplies power to a 12V external power supply VCC, a 9V external power supply VCC and a 3.3V external power supply VCC, firstly, the control A is set to be at a low level, the triode Q1 is disconnected, the MOS tube Q2 is also in a disconnected state, the power supply of the fan is provided by the 9V external power supply VCC, the rotating speed of the fan is at a low-gear rotating speed, then the control A is set to be at a high level, the triode Q1 is connected, the MOS tube Q2 is also connected, the power supply of the fan is simultaneously provided by the 12V external power supply VCC and the 9V external power supply VCC, but because the 12V external power supply VCC is greater than the 9V external power supply VCC, only the 12V external power supply VCC is connected to supply power to the fan through D2 at the moment due to the existence of the diode D1 and the diode D2, the fan is at a high-gear rotating speed, through the verification of multiple times of high-low-gear switching of the fan, thereby obtaining the working stability of the fan rotating speed function. The scheme is simple to realize, the cost is saved, the cost of the clamp plate is only dozens of money, and the operation is convenient.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A clamp for verifying and controlling the rotating speed of a fan comprises the following components: circuit board PCB, characterized by: the 4PIN FAN seat FAN is arranged on the circuit board PCB, the 1 PIN of the 4PIN FAN base FAN is connected to the diode D1 and the diode D2, the diode D1 is connected with a 9V external power supply VCC, the diode D2 is connected with a MOS tube Q2, the MOS transistor Q2 is connected with a resistor R5 and a resistor R4, the resistor R4 is connected with a triode Q1, the triode Q1 is connected with a resistor R3 and a capacitor C3, the resistor R3 is connected with a resistor R1 and a resistor R2, the resistor R2 is connected with the capacitor C3, the resistor R1 is connected with a 3.3V external power supply VCC, the resistor R3 is connected with a control signal controlA, the MOS transistor Q2 is connected with a capacitor C2 and a capacitor C1, MOS pipe Q2 connect 12V external power VCC, electric capacity C1 with electric capacity C2 parallelly connected.
2. The clamp for verifying and controlling the rotating speed of the FAN as claimed in claim 1, wherein the 4-PIN FAN base FAN has 4 PINs, wherein 1 PIN is a power supply PIN, 2 PINs and 3 PINs are suspended PINs and are not used, and 4 PINs are grounding PINs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122761244.XU CN216310067U (en) | 2021-11-11 | 2021-11-11 | Clamp for verifying and controlling rotating speed of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122761244.XU CN216310067U (en) | 2021-11-11 | 2021-11-11 | Clamp for verifying and controlling rotating speed of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216310067U true CN216310067U (en) | 2022-04-15 |
Family
ID=81120683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122761244.XU Active CN216310067U (en) | 2021-11-11 | 2021-11-11 | Clamp for verifying and controlling rotating speed of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216310067U (en) |
-
2021
- 2021-11-11 CN CN202122761244.XU patent/CN216310067U/en active Active
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