TWM564744U - Power supply device with full-speed operation fan switch - Google Patents
Power supply device with full-speed operation fan switch Download PDFInfo
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Abstract
一種具有風扇全速運轉切換開關的電源供應裝置,包含一變壓器、一整流器、一功率開關、一主控制器、一輸出整流及濾波器、一風扇控制單元及一風扇;變壓器包含一主繞組、一次級繞組及一輔助繞組;整流器電連接於一市電市電及主繞組;功率開關電連接於主繞組;一主控制器電連接於功率開關以控制功率開關在導通狀態及截止裝置之間的切換;輸出整流及濾波器電連接於次級繞組;風扇控制單元電連接於輔助繞組並包含一切換開關;風扇電連接於風扇控制單元。當開關閉合時,風扇控制單元驅使風扇全速轉動。 A power supply device having a fan full-speed operation switch, comprising a transformer, a rectifier, a power switch, a main controller, an output rectification and filter, a fan control unit and a fan; the transformer comprises a main winding, once a winding and an auxiliary winding; the rectifier is electrically connected to a mains mains and a main winding; the power switch is electrically connected to the main winding; and a main controller is electrically connected to the power switch to control the switching of the power switch between the on state and the cutoff device; The output rectification and the filter are electrically connected to the secondary winding; the fan control unit is electrically connected to the auxiliary winding and includes a switch; the fan is electrically connected to the fan control unit. When the switch is closed, the fan control unit drives the fan to rotate at full speed.
Description
本創作是關於一具有風扇全速運轉切換開關的電源供應裝置,且特別是有關於一種具備風扇轉速控制功能的電源供應器。 The present invention relates to a power supply device having a fan full speed operation switch, and in particular to a power supply having a fan speed control function.
為了讓電源供應裝置能夠順利的散熱,於其中會安裝風扇以供產生氣流來移除熱源所產生的熱能,以避免其中的電子元件長時間處於高溫環境而損壞。 In order to allow the power supply device to dissipate heat smoothly, a fan is installed therein to generate an air flow to remove the heat generated by the heat source to prevent the electronic components therein from being damaged in a high temperature environment for a long time.
過去配置在電源供應裝置中的風扇都是透過檢測電子元件或風扇週邊的環境溫度,並於環境溫度提高時,以每單位時間增加固定轉速的方式來提高轉速,然而這樣並無法即時且快速地散逸大量產生的熱能。 Fans that have been deployed in power supply devices in the past have been able to increase the rotational speed by detecting the ambient temperature around the electronic components or the fan and increasing the fixed rotational speed per unit time when the ambient temperature is increased. However, this cannot be instantaneously and quickly. Dissipate a large amount of heat generated.
針對先前技術所述的問題,本創作的具有風扇全速運轉切換開關的電源供應裝置中的風扇控制單元配置一用於強制風扇進行全速轉動的切換開關以提升解熱能力。 In response to the problems described in the prior art, the fan control unit in the power supply device of the present invention having a fan full speed operation switch is configured with a switch for forcing the fan to rotate at full speed to enhance the heat release capability.
依據本創作提供一種具有風扇全速運轉切換開關的電源供應裝置,其接收一交流市電並產生一輸出電壓,並包含一變壓器、一整流器、一功率開關、一主控制器、一輸出整流及濾波器、一風扇控制單元及一風扇。變壓器包含相互隔離的一主繞組、一次級繞組及一輔助繞組;整流器電連接於交流市電及主繞組;功率開關電連接於主繞 組;主控制器電連接於功率開關以控制功率開關在導通狀態及截止裝置之間的切換;輸出整流及濾波器電連接於次級繞組並將電磁耦合至次級繞組的電壓進行整流及濾波以產生輸出電壓;風扇控制單元包含一切換開關;切換開關配置於輔助繞組與風扇之間,風扇於切換開關閉合時接受輔助繞組提供之一輔助電壓而進行全速轉動。 According to the present invention, a power supply device having a fan full speed operation switch is provided, which receives an AC mains power and generates an output voltage, and includes a transformer, a rectifier, a power switch, a main controller, an output rectification and a filter. , a fan control unit and a fan. The transformer comprises a main winding, a primary winding and an auxiliary winding separated from each other; the rectifier is electrically connected to the alternating current mains and the main winding; the power switch is electrically connected to the main winding The main controller is electrically connected to the power switch to control the switching of the power switch between the on state and the cutoff device; the output rectification and the filter are electrically connected to the secondary winding and rectify and filter the voltage electromagnetically coupled to the secondary winding The fan control unit includes a switch; the switch is disposed between the auxiliary winding and the fan, and the fan receives an auxiliary voltage from the auxiliary winding to perform full speed rotation when the switch is closed.
依據本創作提供另一種具有風扇全速運轉切換開關的電源供應裝置,其接收一交流市電並產生一輸出電壓,並包含一變壓器、一整流器、一功率開關、一主控制器、一輸出整流及濾波器、一風扇控制單元及一風扇。變壓器包含相互隔離的一主繞組、一次級繞組及一輔助繞組;整流器電連接於交流市電及主繞組;功率開關電連接於主繞組;主控制器電連接於功率開關以控制功率開關在導通狀態及截止裝置之間的切換;輸出整流及濾波器電連接於次級繞組並將電磁耦合至次級繞組的電壓進行整流及濾波以產生輸出電壓。風扇控制單元包含一驅動器及一切換開關,驅動器電連接於輔助繞組以接受一輔助電壓,切換開關電連接於驅動器。風扇具有一內部等效電阻,其一端電連接於輔助繞組以接受輔助電壓,另一端電連接於切換開關非與驅動器相連接之一端;風扇於切換開關開啟時進行全速轉動,並於切換開關閉合時進行非全速轉速。 According to the present invention, another power supply device having a fan full-speed switching switch is provided, which receives an AC mains and generates an output voltage, and includes a transformer, a rectifier, a power switch, a main controller, an output rectification and filtering. a fan control unit and a fan. The transformer comprises a main winding, a primary winding and an auxiliary winding separated from each other; the rectifier is electrically connected to the AC mains and the main winding; the power switch is electrically connected to the main winding; the main controller is electrically connected to the power switch to control the power switch in the conducting state And switching between the cutoff devices; the output rectification and filter are electrically coupled to the secondary winding and the voltage electromagnetically coupled to the secondary winding is rectified and filtered to produce an output voltage. The fan control unit includes a driver and a switch, the driver is electrically connected to the auxiliary winding to receive an auxiliary voltage, and the switch is electrically connected to the driver. The fan has an internal equivalent resistance, one end of which is electrically connected to the auxiliary winding to receive the auxiliary voltage, and the other end is electrically connected to one end of the switch that is not connected to the driver; the fan rotates at full speed when the switch is opened, and the switch is closed at the switch When the speed is not full.
10、10a、10b‧‧‧具有風扇全速運轉切換開關的電源供應裝置 10, 10a, 10b‧‧‧ Power supply unit with fan full speed operation switch
101‧‧‧初級側 101‧‧‧ primary side
102‧‧‧次級側 102‧‧‧Secondary side
104‧‧‧橋式整流器 104‧‧‧Bridge rectifier
106‧‧‧主控制器 106‧‧‧Main controller
108‧‧‧功率開關 108‧‧‧Power switch
110‧‧‧輸出整流及濾波器 110‧‧‧Output rectification and filter
1102‧‧‧二極體 1102‧‧‧dipole
1104‧‧‧電容器 1104‧‧‧ capacitor
112‧‧‧隔離反饋單元 112‧‧‧Isolated feedback unit
120‧‧‧風扇 120‧‧‧fan
122、122a、122b‧‧‧風扇控制單元 122, 122a, 122b‧‧‧fan control unit
1220‧‧‧切換開關 1220‧‧‧Toggle switch
1222‧‧‧驅動器 1222‧‧‧ drive
1224‧‧‧第一二極體 1224‧‧‧First Diode
1226‧‧‧第二二極體 1226‧‧‧Secondary body
FB‧‧‧反饋信號 FB‧‧‧ feedback signal
GNDI‧‧‧輸入地端 GNDI‧‧‧ input ground
GNDO‧‧‧輸出地端 GNDO‧‧‧ output ground
LA‧‧‧輔助繞組 LA‧‧‧Auxiliary winding
LP‧‧‧主繞組 LP‧‧‧ main winding
LS‧‧‧次級繞組 LS‧‧‧Secondary winding
OUT+、OUT-‧‧‧輸出端 OUT+, OUT-‧‧‧ output
Rin‧‧‧內部等效電阻 Rin‧‧‧ internal equivalent resistance
R1‧‧‧第一電阻器 R1‧‧‧ first resistor
R2‧‧‧第二電阻器 R2‧‧‧second resistor
VAC‧‧‧交流市電 VAC‧‧‧Community
VDD‧‧‧直流電壓 VDD‧‧‧ DC voltage
VIN‧‧‧輸入電壓 VIN‧‧‧ input voltage
VOUT‧‧‧輸出電壓 VOUT‧‧‧ output voltage
VAUX‧‧‧輔助電壓 VAUX‧‧‧Auxiliary voltage
圖1繪示依照本創作第一實施方式的具有風扇全速運轉切換開關的電源供應裝置的電路方塊圖; 圖2繪示依照本創作第二實施方式的具有風扇全速運轉切換開關的電源供應裝置的電路方塊圖;以及圖3繪示依照本創作第三實施方式的具有風扇全速運轉切換開關的電源供應裝置的電路方塊圖。 1 is a circuit block diagram of a power supply device having a fan full speed operation switch according to a first embodiment of the present invention; 2 is a circuit block diagram of a power supply device having a fan full speed operation switch according to a second embodiment of the present invention; and FIG. 3 is a power supply device having a fan full speed operation switch according to a third embodiment of the present invention; Circuit block diagram.
圖1繪示依照本創作第一實施方式的具有風扇全速運轉切換開關的電源供應裝置的電路方塊圖。在圖1中,具有風扇全速運轉切換開關的電源供應裝置(以下簡稱「電源供應裝置」)10可分為電流隔離(galvanic insolated)的初級側101及次級側102;初級側101電連接於交流市電VAC,次級側102可對連接在輸出端OUT+、OUT-的電子裝置(圖中未示)提供輸出電壓Vout。 1 is a circuit block diagram of a power supply device having a fan full speed operation switch according to a first embodiment of the present invention. In FIG. 1, a power supply device (hereinafter referred to as "power supply device") 10 having a fan full-speed operation switch is classified into a galvanic insolated primary side 101 and a secondary side 102; the primary side 101 is electrically connected to The AC mains VAC, the secondary side 102 can provide an output voltage Vout to an electronic device (not shown) connected to the output terminals OUT+, OUT-.
電源供應器10包含相互隔離的一主繞組LP、一次級繞組LS、一輔助繞組LA、一橋式整流器104、一主控制器106、一功率開關108、一輸出整流及濾波器110、一隔離反饋單元112、一風扇120及一風扇控制單元122。主繞組LP、次級繞組LS及輔助繞組LA配合構成一變壓器(未另標號),主繞組LP及次級繞組LS配合用以將初級側101的電壓電磁耦合至次級側102,輔助繞組LA可用以提供電源供應器10中主控制器106及風扇控制單元122等元件操作時所需的工作電壓。在本創作中,主繞組LP及輔助繞組LA配置在初級側101,次級繞組LS配置在次級側102。 The power supply 10 includes a main winding LP, a primary winding LS, an auxiliary winding LA, a bridge rectifier 104, a main controller 106, a power switch 108, an output rectification and filter 110, and an isolated feedback. The unit 112, a fan 120 and a fan control unit 122. The main winding LP, the secondary winding LS and the auxiliary winding LA cooperate to form a transformer (not labeled), and the main winding LP and the secondary winding LS cooperate to electromagnetically couple the voltage of the primary side 101 to the secondary side 102, the auxiliary winding LA It can be used to provide the operating voltage required for operation of components such as the main controller 106 and the fan control unit 122 in the power supply 10. In the present creation, the main winding LP and the auxiliary winding LA are disposed on the primary side 101, and the secondary winding LS is disposed on the secondary side 102.
橋式整流器104、主控制器106及功率開關108配置於初級側101。橋式整流器104電連接於交流市電VAC;交流市電VAC經由橋式整流器104整流後,產生輸入電壓VIN。主繞組LP接收輸入電壓VIN。 The bridge rectifier 104, the main controller 106, and the power switch 108 are disposed on the primary side 101. The bridge rectifier 104 is electrically connected to the AC mains VAC; after the AC mains VAC is rectified via the bridge rectifier 104, an input voltage VIN is generated. The main winding LP receives the input voltage VIN.
主控制器106可控制功率開關108的導通時間來改變流經主繞組LP的電流;如此一來,變壓器可從輸入電壓VIN儲能,並從次級側102釋能以建立輸出電壓Vout。更具體言之,輸出整流濾波器110電連接該次級繞組LS,並將電磁耦合至次級繞組LS的電壓進行整流及濾波,以產生輸出電壓Vout。 The main controller 106 can control the on time of the power switch 108 to vary the current flowing through the main winding LP; thus, the transformer can store energy from the input voltage VIN and release energy from the secondary side 102 to establish the output voltage Vout. More specifically, the output rectification filter 110 is electrically coupled to the secondary winding LS and rectifies and filters the voltage electromagnetically coupled to the secondary winding LS to produce an output voltage Vout.
輸出整流及濾波器110可包含一用於整流的二極體1102,以及一用於濾波的電容器1104。次級繞組LS的第一端可電連接於二極體1102的陽極,其第二端電連接於輸出地端GNDO;電容器1104電連接於二極體1102的陰極及輸出地端GNDO之間。電容器1104的跨壓作為輸出電壓Vout。 The output rectification and filter 110 can include a diode 1102 for rectification and a capacitor 1104 for filtering. The first end of the secondary winding LS is electrically connected to the anode of the diode 1102, and the second end thereof is electrically connected to the output ground GND0; the capacitor 1104 is electrically connected between the cathode of the diode 1102 and the output ground GND0. The voltage across the capacitor 1104 is taken as the output voltage Vout.
隔離反饋單元112電連接於二極體1102的陰極及電容器1104以接收輸出電壓Vout,並根據輸出電壓Vout產生反饋信號FB。反饋信號FB相關於連接在輸出端OUT+、OUT-的電子裝置需求的輸出電壓Vout。隔離反饋單元112可例如由配置在次級側102的發光件(圖中未示)及配置在出級側101的收光件構成,發光件及收光件配合將與輸出電壓Vout相關的反饋信號FB從次級側102電氣隔離的傳遞至初級側101,以避免初級側101及次級側102發生電氣干擾。 The isolation feedback unit 112 is electrically connected to the cathode of the diode 1102 and the capacitor 1104 to receive the output voltage Vout, and generates a feedback signal FB according to the output voltage Vout. The feedback signal FB is related to the output voltage Vout required by the electronics connected to the output terminals OUT+, OUT-. The isolation feedback unit 112 can be configured, for example, by a light-emitting member (not shown) disposed on the secondary side 102 and a light-receiving member disposed on the outgoing side 101. The light-emitting member and the light-receiving member cooperate to provide feedback related to the output voltage Vout. Signal FB is electrically isolated from secondary side 102 to primary side 101 to avoid electrical interference from primary side 101 and secondary side 102.
主控制器106電連接於輔助繞組LA及隔離反饋單元112,接收來自輔助繞組LA的輔助電壓VAUX及反饋信號FB。輔助電壓VAUX作為 主控制器106的工作電壓。主控制器106根據反饋信號FB產生一控制信號輸出至功率開關108,以便控制功率開關108在導通狀態及截止裝置之間的切換,達到改變流經主繞組LP的電流的功能,進而可調整輸出電壓Vout。 The main controller 106 is electrically connected to the auxiliary winding LA and the isolation feedback unit 112, and receives the auxiliary voltage VAUX and the feedback signal FB from the auxiliary winding LA. Auxiliary voltage VAUX as The operating voltage of the main controller 106. The main controller 106 generates a control signal output to the power switch 108 according to the feedback signal FB, so as to control the switching of the power switch 108 between the on state and the off device to change the current flowing through the main winding LP, thereby adjusting the output. Voltage Vout.
風扇控制單元122電連接於輔助繞組LA及風扇120,接收輔助繞組LA上的輔助電壓VAUX並控制風扇120的轉速。輔助電壓VAUX可作為風扇控制單元122的工作電壓。在此要特別說明的是,在本實施方式中,風扇控制單元122所需工作電壓相同於主控制器106的工作電壓,且輔助繞組LA和主繞組LP的匝數比可經適當的設計而讓輔助電壓VAUX的準位相同於主控制器106及風扇控制單元122所需工作電壓的準位;然而,在實際實施時,主控制器106的工作電壓的準位可不同於風扇控制單元122的工作電壓的準位,且主控制器106和輔助繞組LA之間,或者風扇控制單元122和輔助繞組LA之間可額外配置一電壓調節器(voltage regulator),例如直流/直流電壓轉換器,以提供升壓或降壓的功能而替主控制器106或風扇控制單元122供電。 The fan control unit 122 is electrically connected to the auxiliary winding LA and the fan 120, receives the auxiliary voltage VAUX on the auxiliary winding LA, and controls the rotational speed of the fan 120. The auxiliary voltage VAUX can be used as the operating voltage of the fan control unit 122. It should be particularly noted that in the present embodiment, the required operating voltage of the fan control unit 122 is the same as the operating voltage of the main controller 106, and the turns ratio of the auxiliary winding LA and the main winding LP can be appropriately designed. Let the level of the auxiliary voltage VAUX be the same as the level of the required operating voltage of the main controller 106 and the fan control unit 122; however, in actual implementation, the level of the operating voltage of the main controller 106 may be different from the fan control unit 122. An operating voltage level, and a voltage regulator, such as a DC/DC voltage converter, may be additionally disposed between the main controller 106 and the auxiliary winding LA or between the fan control unit 122 and the auxiliary winding LA. The main controller 106 or the fan control unit 122 is powered by a boost or buck function.
在圖1中,風扇控制單元122包含一切換開關1220及一驅動器1222;切換開關1220的一端電連接於輔助繞組LA以接收輔助電壓VAUX,另一端電連接於風扇120。驅動器1222與切換開關1220並聯連接。 In FIG. 1 , the fan control unit 122 includes a switch 1220 and a driver 1222; one end of the switch 1220 is electrically connected to the auxiliary winding LA to receive the auxiliary voltage VAUX, and the other end is electrically connected to the fan 120. The driver 1222 is connected in parallel with the changeover switch 1220.
在操作時,若電源供應裝置10內部的工作溫度低於一預定值時,切換開關120開啟(turn-off),則風扇120接收驅動器1222輸出的驅動信 號而轉動。驅動器1222可例如用以產生一脈衝寬度調變信號來改變風扇的轉速;一般來說,脈衝寬度調變信號的工作週期愈大,則風扇120的轉速愈快。在此要特別說明的是,驅動器1222可具備溫度監測功能,並可於電源供應裝置10內部的工作溫度低於前述預定值時,依照自身監測到的溫度值調整脈衝寬度調變信號的工作週期來改變風扇120的轉速,以替電源供應裝置10提供良好的解熱效果。 In operation, if the operating temperature inside the power supply device 10 is lower than a predetermined value, the switch 120 is turned-off, and the fan 120 receives the drive letter output from the driver 1222. Turn and turn. The driver 1222 can be used, for example, to generate a pulse width modulation signal to change the rotational speed of the fan; in general, the greater the duty cycle of the pulse width modulation signal, the faster the rotational speed of the fan 120. It should be particularly noted that the driver 1222 can be provided with a temperature monitoring function, and can adjust the duty cycle of the pulse width modulation signal according to the temperature value monitored by itself when the operating temperature inside the power supply device 10 is lower than the predetermined value. The rotation speed of the fan 120 is changed to provide a good antipyretic effect for the power supply device 10.
若電源供應裝置10內部的工作溫度高於或等於一預定值時,切換開關1220閉合(turn-on),驅使風扇120進行全速轉動,藉以避免電源供應裝置10因熱蓄積而發生故障或損壞。在本創作的一個實施方式中,切換開關1220閉合(即電源供應裝置10內部的工作溫度高於或等於前述預定值)時與切換開關1220開啟(即電源供應裝置10內部的工作溫度低於前述預定值)時的風扇120可呈相同邏輯運轉狀態。在本創作的另一個實施方式中,切換開關1220閉合時與切換開關1220開啟時的風扇120可呈相反邏輯運轉狀態。 If the operating temperature inside the power supply device 10 is higher than or equal to a predetermined value, the switch 1220 is turned-on to drive the fan 120 to rotate at full speed to prevent the power supply device 10 from malfunctioning or being damaged due to heat accumulation. In one embodiment of the present invention, when the changeover switch 1220 is closed (ie, the operating temperature inside the power supply device 10 is higher than or equal to the aforementioned predetermined value), the switch 1220 is turned on (ie, the operating temperature inside the power supply device 10 is lower than the foregoing). The fan 120 at the predetermined value may be in the same logical operating state. In another embodiment of the present creation, the fan 120 when the changeover switch 1220 is closed and when the changeover switch 1220 is turned on may be in an opposite logic operating state.
雖然前揭段落以電源供應裝置10內部的工作溫度是否達到預定值來讓切換開關1220閉合或開啟;但在實際實施時,也不排除是以電源供應裝置10的輸出電壓及/或輸出電流作為切換開關1220開啟或閉合的決定條件。 Although the pre-existing paragraph allows the switch 1220 to be closed or opened by whether the operating temperature inside the power supply device 10 reaches a predetermined value, in actual practice, the output voltage and/or output current of the power supply device 10 is not excluded. The decision condition for the switch 1220 to open or close.
圖2繪示依照本創作第二實施方式的具有風扇全速運轉切換開關的電源供應裝置的電路方塊圖。圖2的具有風扇全速運轉切換開關的電源供應裝置(以下簡稱「電源供應裝置」)10a類似於前述第一實施方式中記載的電源供應裝置10,且相同的構件標示以相同的符號; 兩者的差異在於本實施方式的風扇控制單元122a由一切換開關1220、一第一二極體1224及一第二二極體1226構成。 2 is a circuit block diagram of a power supply device having a fan full speed operation switch according to a second embodiment of the present invention. The power supply device (hereinafter referred to as "power supply device") 10a having the fan full-speed operation changeover switch of FIG. 2 is similar to the power supply device 10 described in the foregoing first embodiment, and the same components are denoted by the same reference numerals; The difference between the two is that the fan control unit 122a of the present embodiment is composed of a switch 1220, a first diode 1224 and a second diode 1226.
在圖2中,切換開關1220的一端電連接於輔助繞組LA以接收輔助電壓VAUX,另一端電連接於第一二極體1224的陽極;第一二極體1224的陰極電連接於風扇120。第二二極體1226的陽極電連接於一直流電壓VDD,陰極電連接於風扇120。在本實施方式中,直流電壓VDD的準位低於輔助電壓VAUX的準位,且當切換開關1220閉合(turn-on)而讓輔助電壓VAUX導通至風扇120時,可驅使風扇120全速轉動。 In FIG. 2, one end of the changeover switch 1220 is electrically connected to the auxiliary winding LA to receive the auxiliary voltage VAUX, and the other end is electrically connected to the anode of the first diode 1224; the cathode of the first diode 1224 is electrically connected to the fan 120. The anode of the second diode 1226 is electrically connected to the DC voltage VDD, and the cathode is electrically connected to the fan 120. In the present embodiment, the level of the DC voltage VDD is lower than the level of the auxiliary voltage VAUX, and when the switch 1220 is turned-on and the auxiliary voltage VAUX is turned on to the fan 120, the fan 120 can be driven to rotate at full speed.
此外,風扇控制單元122a更包含一第一電阻器R1及第二電阻器R2,其等用以與輔助電壓VAUX配合提供直流電壓VDD。更具體言之,第一電阻器R1和第二電阻器R2串聯連接,第一電阻器R1非與第二電阻器R2相連接的一端連接至輔助電壓VAUX,第二電阻器R2非與第一電阻器R1相連接的一端電連接至輸入地端GNDI。 In addition, the fan control unit 122a further includes a first resistor R1 and a second resistor R2, which are used to provide a DC voltage VDD in cooperation with the auxiliary voltage VAUX. More specifically, the first resistor R1 and the second resistor R2 are connected in series, one end of the first resistor R1 not connected to the second resistor R2 is connected to the auxiliary voltage VAUX, and the second resistor R2 is not connected to the first One end of the resistor R1 is electrically connected to the input ground GNDI.
在操作時,當切換開關1220開啟(turn-off)時,輔助電壓AUX經第一電阻器R1及第二電阻器R2分壓後產生的直流電壓VDD通過第二二極體1226傳遞至風扇120,藉以驅使風扇120轉動。歸因於輔助電壓VAUX的準位高於直流電壓VDD的準位,故在切換開關1220開啟時的風扇120轉速低於切換開關1220閉合時的風扇120轉速。電源供應裝置10a的其它構件的功用與相關說明,實際上與電源供應裝置10相同,在此不予贅述。電源供應裝置10a至少可達到與電源供應裝置10相同的功能。 In operation, when the switch 1220 is turned-off, the DC voltage VDD generated after the auxiliary voltage AUX is divided by the first resistor R1 and the second resistor R2 is transmitted to the fan 120 through the second diode 1226. In order to drive the fan 120 to rotate. Due to the fact that the level of the auxiliary voltage VAUX is higher than the level of the DC voltage VDD, the speed of the fan 120 when the changeover switch 1220 is turned on is lower than the speed of the fan 120 when the changeover switch 1220 is closed. The functions and related descriptions of other components of the power supply device 10a are substantially the same as those of the power supply device 10, and are not described herein. The power supply device 10a can at least achieve the same function as the power supply device 10.
圖3繪示依照本創作第三實施方式的電源供應裝置具有風扇全速運轉切換開關的電源供應裝置的電路方塊圖。圖3所繪式的具有風扇全速運轉切換開關的電源供應裝置(以下簡稱「電源供應裝置」)10b類似於前述第一實施方式所繪式的電源供應裝置10,且相同的構件標示以相同的符號;兩者的差異在於本實施方式的風扇控制單元122b是與風扇120之一內部等效電阻Rin配合改變風扇120轉速。 3 is a circuit block diagram of a power supply device having a fan full speed operation switching switch according to a third embodiment of the present invention. The power supply device (hereinafter referred to as "power supply device") 10b having the fan full-speed operation switching switch depicted in FIG. 3 is similar to the power supply device 10 of the first embodiment described above, and the same components are labeled the same. The difference between the two is that the fan control unit 122b of the present embodiment cooperates with one of the internal equivalent resistances Rin of the fan 120 to change the rotational speed of the fan 120.
在圖3中,風扇控制單元122b包含一切換開關1220及一驅動器1222;風扇120具有內部等效電阻器Rin。切換開關1220的一端連接於驅動器1222,另一端連接於內部等效電阻Rin;內部等效電阻Rin的另一端連接於輔助繞組LA以接收輔助電壓VAUX。驅動器1222還電連接輔助繞組LA以接受輔助電壓VAUX作為工作電壓。 In FIG. 3, the fan control unit 122b includes a switch 1220 and a driver 1222; the fan 120 has an internal equivalent resistor Rin. One end of the switch 1220 is connected to the driver 1222, and the other end is connected to the internal equivalent resistor Rin; the other end of the internal equivalent resistor Rin is connected to the auxiliary winding LA to receive the auxiliary voltage VAUX. The driver 1222 is also electrically connected to the auxiliary winding LA to receive the auxiliary voltage VAUX as an operating voltage.
在操作時,當切換開關1220開啟(turn-off)時,風扇120的內部等效電阻Rin相應地提高,促使風扇120全速轉動。相對地,當切換開關1220閉合(turn-on)時,風扇120的內部電阻Rin相應地降低,促使風扇120降低轉速。電源供應裝置10b的其它構件的功用與相關說明,實際上與電源供應裝置10相同,在此不予贅述。電源供應裝置10b至少可達到與電源供應裝置10相同的功能。 In operation, when the changeover switch 1220 is turned-off, the internal equivalent resistance Rin of the fan 120 is correspondingly increased, causing the fan 120 to rotate at full speed. In contrast, when the changeover switch 1220 is turned-on, the internal resistance Rin of the fan 120 is correspondingly lowered, causing the fan 120 to decrease the rotational speed. The functions and related descriptions of other components of the power supply device 10b are substantially the same as those of the power supply device 10, and will not be described herein. The power supply device 10b can at least achieve the same function as the power supply device 10.
雖然本創作已以實施方式揭露如上,然其並非用以限定本創作,任何熟習此技藝者,在不脫離本創作的精神和範圍內,當可作各種的更動與潤飾,因此本創作的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the present creation. The scope is subject to the definition of the scope of the patent application.
Claims (14)
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI702781B (en) * | 2019-12-24 | 2020-08-21 | 奇高電子股份有限公司 | Isolated power converter and secondary side control circuit thereof |
CN113138651A (en) * | 2021-03-08 | 2021-07-20 | 广东迅扬科技股份有限公司 | Computer power supply circuit |
-
2018
- 2018-04-20 TW TW107205200U patent/TWM564744U/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI702781B (en) * | 2019-12-24 | 2020-08-21 | 奇高電子股份有限公司 | Isolated power converter and secondary side control circuit thereof |
CN113138651A (en) * | 2021-03-08 | 2021-07-20 | 广东迅扬科技股份有限公司 | Computer power supply circuit |
CN113138651B (en) * | 2021-03-08 | 2024-04-19 | 广东迅扬科技股份有限公司 | Computer power supply circuit |
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