TWI589182B - Power outlet device and led control circuit thereof - Google Patents
Power outlet device and led control circuit thereof Download PDFInfo
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Description
本發明有關於一種電力輸出裝置，且特別是一種電力輸出裝置及其發光二極體控制電路。 The invention relates to a power output device, and in particular to a power output device and a light emitting diode control circuit thereof.
傳統的電力輸出裝置如插座、延長線、壁式插座、充電裝置及其他電源連接延伸產品等，可以接收交流電力並將所接收到的電力(交流電力或者轉換為直流電力)提供給電子裝置。在先前技術中，某些傳統的電力輸出裝置也有裝設發光二極體(LED)。傳統的電力輸出裝置所使用的發光二極體驅動電路為了能使各別不同發光二極體單元透過控制單元呈現出：恆亮、間斷閃爍、發光或熄滅、亮度調整等發光指示，通常會在電路中增加電阻，配合各種不同功能之電容、變壓器、整流器等電路元件，使發光二極體能產生不同發光指示狀態。然而，在發光二極體驅動電路中使用電阻則會造成能量損耗，降低電源使用效率。 Conventional power output devices such as sockets, extension cords, wall sockets, charging devices, and other power connection extension products can receive AC power and provide the received power (AC power or DC power) to the electronic device. In the prior art, some conventional power output devices also have a light emitting diode (LED). The LED driver circuit used in the conventional power output device is configured to enable different LED units to pass through the control unit to display illumination indications such as constant illumination, intermittent flicker, illumination or extinction, and brightness adjustment. The circuit is added with a resistor, and various circuit capacitors, transformers, rectifiers and other circuit components are used to enable the LED to generate different illumination indication states. However, the use of a resistor in a light-emitting diode driving circuit causes energy loss and reduces power supply efficiency.
本發明實施例提供一種具有電力輸出裝置及其發光二極體控制電路，在連接外部交流電時可提供節能低功耗LED驅動及控制電路的照明或發光指示效果。 Embodiments of the present invention provide a power output device and a light emitting diode control circuit thereof, which can provide an illumination or illumination indication effect of an energy-saving low-power LED driving and control circuit when connecting external alternating current.
本發明實施例提供一種具有可控發光二極體的電力輸出裝置，包括電力接收單元、電力輸出單元以及發光二極體控制電路。電力接收單元用以電性連接交流電源的火線(L)及零線(N)。電 力輸出單元電性連接電力接收單元，用以插接並輸出電力給至少一電子裝置。發光二極體控制電路經由電力接收單元電性連接交流電源的火線及零線。發光二極體控制電路包括電容、第一二極體、第一發光二極體單元、第二二極體、第二發光二極體單元及控制單元。第一發光二極體單元與第二發光二極體單元彼此反向並聯，且反向並聯的第一發光二極體單元與第二發光二極體單元串聯電容，以電性連接於交流電源的火線與零線之間。第一二極體與第一發光二極體單元為順向串聯，且第二二極體與第二發光二極體單元為順向串聯。控制單元並聯第二發光二極體單元，且依據外部訊號控制第二發光二極體單元的發光狀態。 Embodiments of the present invention provide a power output device having a controllable light emitting diode, including a power receiving unit, a power output unit, and a light emitting diode control circuit. The power receiving unit is electrically connected to the live line (L) and the neutral line (N) of the AC power source. Electricity The force output unit is electrically connected to the power receiving unit for plugging in and outputting power to the at least one electronic device. The LED control circuit is electrically connected to the live line and the neutral line of the AC power source via the power receiving unit. The LED control circuit includes a capacitor, a first diode, a first LED unit, a second diode, a second LED unit, and a control unit. The first light emitting diode unit and the second light emitting diode unit are connected in anti-parallel with each other, and the first light emitting diode unit and the second light emitting diode unit connected in reverse parallel are electrically connected to the alternating current power source. Between the fire line and the zero line. The first diode and the first LED unit are connected in series, and the second diode and the second LED unit are connected in series. The control unit is connected in parallel with the second light emitting diode unit, and controls the light emitting state of the second light emitting diode unit according to the external signal.
本發明實施例提供一種發光二極體控制電路，經由電力接收單元電性連接交流電源的火線(L)及零線(N)，發光二極體控制電路包括電容、第一發光二極體單元、第二發光二極體單元、第一二極體、第二二極體以及控制單元。第一發光二極體單元與第二發光二極體單元彼此反向並聯，且反向並聯的第一發光二極體單元與第二發光二極體單元串聯電容，以電性連接於交流電源的火線與零線之間。第一二極體與第一發光二極體單元為順向串聯，第二二極體與第二發光二極體單元為順向串聯。控制單元並聯第二發光二極體單元，其中控制單元依據外部訊號控制第二發光二極體單元的發光狀態。 The embodiment of the invention provides a light-emitting diode control circuit, which is electrically connected to a live line (L) and a neutral line (N) of an alternating current power supply via a power receiving unit, and the light-emitting diode control circuit comprises a capacitor and a first light-emitting diode unit. a second light emitting diode unit, a first diode, a second diode, and a control unit. The first light emitting diode unit and the second light emitting diode unit are connected in anti-parallel with each other, and the first light emitting diode unit and the second light emitting diode unit connected in reverse parallel are electrically connected to the alternating current power source. Between the fire line and the zero line. The first diode and the first LED unit are connected in series, and the second diode and the second LED unit are connected in series. The control unit is connected in parallel with the second light emitting diode unit, wherein the control unit controls the light emitting state of the second light emitting diode unit according to the external signal.
綜上所述，本發明實施例提供一種電力輸出裝置及其發光二極體控制電路，其第一發光二極體單元與第二發光二極體單元可以用於照明或發光指示。並且利用電容可提供節能低功耗的發光二極體驅動，而不需要使用交直流轉換電路。第一發光二極體單元不受控制單元影響，第二發光二極體單元受到控制單元因外部訊號而影響，藉此可提供正常照明或發光指示，也可提供異常照明或發光指示。 In summary, an embodiment of the present invention provides a power output device and a light emitting diode control circuit thereof, wherein the first light emitting diode unit and the second light emitting diode unit can be used for illumination or illumination indication. And the use of capacitors can provide energy-saving and low-power LED driving without using AC/DC conversion circuits. The first light-emitting diode unit is not affected by the control unit, and the second light-emitting diode unit is affected by the control unit due to the external signal, thereby providing normal illumination or illumination indication, and also providing abnormal illumination or illumination indication.
為使能更進一步瞭解本發明之特徵及技術內容，請參閱以下 有關本發明之詳細說明與附圖，但是此等說明與所附圖式僅係用來說明本發明，而非對本發明的權利範圍作任何的限制。 In order to further understand the features and technical contents of the present invention, please refer to the following The detailed description of the present invention and the accompanying drawings are intended to illustrate the invention and not to limit the scope of the invention.
1‧‧‧具有可控發光二極體的電力輸出裝置 1‧‧‧Power output device with controllable light-emitting diode
11‧‧‧電力接收單元 11‧‧‧Power receiving unit
12‧‧‧電力輸出單元 12‧‧‧Power output unit
13、13’‧‧‧發光二極體控制電路 13, 13'‧‧‧Lighting diode control circuit
2‧‧‧電子裝置 2‧‧‧Electronic devices
1a‧‧‧延長線插座 1a‧‧‧Extension cord socket
1b‧‧‧壁式插座 1b‧‧‧ wall socket
131、131’‧‧‧第一發光二極體單元 131, 131'‧‧‧ first light-emitting diode unit
132、132’‧‧‧第二發光二極體單元 132, 132'‧‧‧Second light-emitting diode unit
AC‧‧‧交流電源 AC‧‧‧AC power supply
DC‧‧‧直流電 DC‧‧‧DC
121、123‧‧‧交流插座 121, 123‧‧‧ AC socket
122、124‧‧‧直流插座 122, 124‧‧‧DC socket
133‧‧‧電容 133‧‧‧ Capacitance
134、134’‧‧‧第一二極體 134, 134’‧‧‧ first diode
135、135’‧‧‧第二二極體 135, 135’‧‧‧ second diode
136‧‧‧控制單元 136‧‧‧Control unit
L‧‧‧火線 L‧‧‧FireWire
N‧‧‧零線 N‧‧‧Zero
PE‧‧‧地線 PE‧‧‧ ground wire
EC‧‧‧外部訊號 EC‧‧‧External signal
137‧‧‧異常電流抑制單元 137‧‧‧Abnormal current suppression unit
138‧‧‧輔助控制單元 138‧‧‧Auxiliary Control Unit
DET‧‧‧偵測單元 DET‧‧‧Detection unit
S1‧‧‧開關 S1‧‧ switch
D1、D2‧‧‧二極體 D1, D2‧‧‧ diode
C1‧‧‧電容 C1‧‧‧ capacitor
R1‧‧‧電阻 R1‧‧‧ resistance
圖1是本發明實施例提供的具有可控發光二極體的電力輸出裝置的電路方塊圖。 1 is a circuit block diagram of a power output device having a controllable light emitting diode according to an embodiment of the present invention.
圖2A是本發明實施例提供的具有可控發光二極體的延長線插座的示意圖。 2A is a schematic diagram of an extension cord socket with a controllable light emitting diode according to an embodiment of the invention.
圖2B是本發明實施例提供的具有可控發光二極體的壁式插座的示意圖。 2B is a schematic diagram of a wall socket with a controllable light emitting diode according to an embodiment of the invention.
圖3A是本發明實施例提供的具有可控發光二極體的電力輸出裝置的發光二極體控制電路的電路圖。 3A is a circuit diagram of a light emitting diode control circuit of a power output device having a controllable light emitting diode according to an embodiment of the present invention.
圖3B是本發明另一實施例提供的發光二極體控制電路的部分電路圖。 FIG. 3B is a partial circuit diagram of a light emitting diode control circuit according to another embodiment of the present invention.
圖4是本發明另一實施例提供的具有可控發光二極體的電力輸出裝置的發光二極體控制電路的電路圖。 4 is a circuit diagram of a light emitting diode control circuit of a power output device having a controllable light emitting diode according to another embodiment of the present invention.
圖5是本發明另一實例提供的發光二極體控制電路及其控制單元的電路圖。 FIG. 5 is a circuit diagram of a light emitting diode control circuit and a control unit thereof according to another example of the present invention.
圖6是本發明另一實施例提供的發光二極體控制電路的電路圖。 FIG. 6 is a circuit diagram of a light emitting diode control circuit according to another embodiment of the present invention.
請參照圖1，圖1是本發明實施例提供的具有可控發光二極體的電力輸出裝置的電路方塊圖。具有可控發光二極體的電力輸出裝置1包括電力接收單元11、電力輸出單元12以及發光二極體控制電路13。發光二極體控制電路13具有第一發光二極體單元131與第二發光二極體單元132。具有可控發光二極體的電力輸出裝置 1例如是插座、延長線、壁式插座、充電裝置及其他電源連接延伸產品等，可以接收交流電源AC的電力並將所接收到的電力以直流(DC)或交流(AC)方式提供給電子裝置2。 Please refer to FIG. 1. FIG. 1 is a circuit block diagram of a power output device with a controllable light emitting diode according to an embodiment of the present invention. The power output device 1 having a controllable light-emitting diode includes a power receiving unit 11, a power output unit 12, and a light-emitting diode control circuit 13. The light emitting diode control circuit 13 has a first light emitting diode unit 131 and a second light emitting diode unit 132. Power output device with controllable light emitting diode 1 For example, a socket, an extension cord, a wall socket, a charging device, and other power connection extension products, etc., can receive the power of the AC power source AC and provide the received power to the electronic device in a direct current (DC) or alternating current (AC) manner. Device 2.
電力接收單元11用以電性連接交流電源AC的火線(Live wire)及零線(Naught wire)。電力輸出單元12電性連接電力接收單元11，用以插接並輸出電力(交流電或直流電)給至少一電子裝置2。在實際應用時，電力輸出單元12可以例如包括整流器、變壓器、濾波器、交直流轉換器等元件，以輸出電力(交流電或直流電)給電子裝置2。參照圖2A的延長線插座1a的示意圖，電力接收單元11包括插頭及導線，用以連接至交流電源AC(如110V的市電)，以接收交流電源AC的電力。電力輸出單元12可包括至少一個插座，如圖2A的交流插座121與直流插座122。交流插座121例如輸出110V的交流電，直流插座122例如是通用序列匯流排(USB)的插座，以輸出5V直流電壓。然而，本發明並不限定電力輸出單元12的插座類型以及輸出電壓的大小及電壓形式。本發明也不限定電力輸出單元12可連接的電子裝置的數量，換句話說，電力輸出單元12可以具有多個插座(或等效的電連接端子)以連接到多個電子裝置2，電力輸出單元12可以對多個電子裝置2供電。延長線插座1a的殼體上設有第一發光二極體單元131與第二發光二極體單元132，可分別產生發光指示或照明。第一發光二極體單元131與第二發光二極體單元132的其中之一的發光狀態受到發光二極體控制電路13的控制而影響，將於後續的實施例進一步說明。 The power receiving unit 11 is configured to electrically connect the Live wire and the Naught wire of the AC power source AC. The power output unit 12 is electrically connected to the power receiving unit 11 for plugging in and outputting power (alternating current or direct current) to the at least one electronic device 2. In practical applications, the power output unit 12 may include, for example, a rectifier, a transformer, a filter, an AC/DC converter, and the like to output power (alternating current or direct current) to the electronic device 2. Referring to the schematic diagram of the extension cord socket 1a of FIG. 2A, the power receiving unit 11 includes a plug and a wire for connection to an AC power source AC (eg, 110 V mains) to receive power of the AC power source AC. The power output unit 12 can include at least one socket, such as the AC outlet 121 and the DC outlet 122 of FIG. 2A. The AC outlet 121 outputs, for example, 110 V of alternating current, and the DC outlet 122 is, for example, a universal serial bus (USB) socket to output a 5 V DC voltage. However, the present invention does not limit the socket type of the power output unit 12 and the magnitude and voltage form of the output voltage. The present invention also does not limit the number of electronic devices to which the power output unit 12 can be connected. In other words, the power output unit 12 may have a plurality of sockets (or equivalent electrical connection terminals) to be connected to the plurality of electronic devices 2, and the power output Unit 12 can power multiple electronic devices 2. The first light emitting diode unit 131 and the second light emitting diode unit 132 are disposed on the casing of the extension cord socket 1a, and can respectively generate an illumination indication or illumination. The light-emitting state of one of the first light-emitting diode unit 131 and the second light-emitting diode unit 132 is affected by the control of the light-emitting diode control circuit 13, which will be further described in the following embodiments.
又例如圖2B的例子，具有可控發光二極體的電力輸出裝置1例如是壁式插座1b，壁式插座1b包括110V的交流插座123與直流插座124。壁式插座1b的殼體上設有第一發光二極體單元131與第二發光二極體單元132。值得注意的是，圖2A與圖2B的延長線插座1a與壁式插座1b僅是用以示意，本發明並不限定具有可控發光二極體的電力輸出裝置的外觀及形狀，也不限定其各部 元件的外觀及形狀。 For another example, the example of FIG. 2B, the power output device 1 having a controllable light-emitting diode is, for example, a wall socket 1b, and the wall socket 1b includes a 110V AC socket 123 and a DC socket 124. The first LED sub-unit 131 and the second LED unit 132 are disposed on the housing of the wall socket 1b. It should be noted that the extension cord socket 1a and the wall socket 1b of FIG. 2A and FIG. 2B are only for illustration, and the present invention does not limit the appearance and shape of the power output device having the controllable light-emitting diode, and is not limited thereto. Its various departments The appearance and shape of the component.
接著請參照圖3A，圖3A是本發明實施例提供的具有可控發光二極體的電力輸出裝置的發光二極體控制電路的電路圖。發光二極體控制電路13經由電力接收單元11電性連接交流電源AC的火線L及零線N。在圖3的實施例中，電力接收單元11也電性連接地線PE(或稱為Earth(E)或ground(G))。發光二極體控制電路13包括電容133、第一二極體134、第一發光二極體單元131、第二二極體135、第二發光二極體單元132及控制單元136。 Referring to FIG. 3A, FIG. 3A is a circuit diagram of a light-emitting diode control circuit of a power output device with a controllable light-emitting diode according to an embodiment of the present invention. The LED control circuit 13 is electrically connected to the live line L and the neutral line N of the AC power source AC via the power receiving unit 11. In the embodiment of FIG. 3, the power receiving unit 11 is also electrically connected to the ground line PE (or called Earth (E) or ground (G)). The LED control circuit 13 includes a capacitor 133, a first diode 134, a first LED unit 131, a second diode 135, a second LED unit 132, and a control unit 136.
第一發光二極體單元131包括至少一個發光二極體，例如是多個串聯或並聯的發光二極體串(或發光二極體模組)，本發明並不限定第一發光二極體單元131中的發光二極體的組成方式。第一發光二極體單元131具有正極與負極。類似的，第二發光二極體單元132包括至少一個發光二極體，例如是多個串聯或並聯的發光二極體串(或發光二極體模組)，本發明並不限定第二發光二極體單元132中的發光二極體的組成方式。第二發光二極體單元132具有正極與負極。 The first LED unit 131 includes at least one LED, for example, a plurality of LED strings (or LED modules) connected in series or in parallel. The present invention does not limit the first LED. The composition of the light-emitting diodes in unit 131. The first light emitting diode unit 131 has a positive electrode and a negative electrode. Similarly, the second LED unit 132 includes at least one LED, such as a plurality of LED strings (or LED modules) connected in series or in parallel, and the present invention does not limit the second illumination. The composition of the light-emitting diodes in the diode unit 132. The second light emitting diode unit 132 has a positive electrode and a negative electrode.
接下來敘述發光二極體控制電路13的各元件的連接方式。第一發光二極體單元131與第二發光二極體單元132彼此反向並聯，也就是說，第一發光二極體單元131的正極電性連接第二發光二極體單元132的負極，第一發光二極體單元131的負極電性連接第二發光二極體單元132的正極。並且，反向並聯的第一發光二極體單元131與第二發光二極體單元132串聯電容133，以電性連接於交流電源AC的火線L與零線N之間。以圖3A的例子而言，交流電源AC的火線L電性連接電容133的第一端，電容133的第二端再電性連接反向並聯的第一發光二極體單元131與第二發光二極體單元132，然後再電性連接至交流電源AC的零線N。然而，依據同樣原理，電容133與反向並聯的第一發光二極體單元131與第二發光二極體單元132的串聯順序可以互換，其也包 括於本發明實施例的範疇。 Next, the connection mode of each element of the light-emitting diode control circuit 13 will be described. The first light-emitting diode unit 131 and the second light-emitting diode unit 132 are connected in anti-parallel with each other, that is, the anode of the first light-emitting diode unit 131 is electrically connected to the cathode of the second light-emitting diode unit 132. The negative electrode of the first light emitting diode unit 131 is electrically connected to the positive electrode of the second light emitting diode unit 132. Moreover, the first light-emitting diode unit 131 and the second light-emitting diode unit 132 connected in anti-parallel are connected in series with a capacitor 133 to be electrically connected between the live line L of the AC power source AC and the neutral line N. In the example of FIG. 3A, the live line L of the AC power source AC is electrically connected to the first end of the capacitor 133, and the second end of the capacitor 133 is electrically connected to the first LED unit 131 and the second LED that are connected in anti-parallel. The diode unit 132 is then electrically connected to the neutral line N of the AC power source AC. However, according to the same principle, the series order of the first illuminating diode unit 131 and the second illuminating diode unit 132 in the reverse parallel connection between the capacitor 133 and the second illuminating diode unit 132 can be interchanged. It is included in the scope of the embodiments of the present invention.
電容133用以產生與交流電源AC的頻率相關的等效阻抗。本發明實施例的發光二極體控制電路不需使用傳統的交流直流轉換電路，也不需使用電阻產生壓降，而是使用電容133產生依據交流電頻率而產生的等效阻抗(如電抗(Reactance))，且電容133也可兼具有濾波器的濾波功能。在交流電源AC的頻率與電壓大小已知，且使用的第一發光二極體單元131與第二發光二極體單元132其導通的跨壓已知的情況下，可藉由適當設計電容133的值以產生適合的等效阻抗。 Capacitor 133 is used to generate an equivalent impedance associated with the frequency of AC power source AC. The LED control circuit of the embodiment of the present invention does not need to use a conventional AC-DC conversion circuit, and does not need to use a resistor to generate a voltage drop, but uses the capacitor 133 to generate an equivalent impedance (such as a reactance) generated according to the AC frequency. )), and the capacitor 133 can also have the filtering function of the filter. In the case where the frequency and voltage of the AC power source AC are known, and the cross-voltages at which the first LED unit 131 and the second LED unit 132 are used are known, the capacitor 133 can be appropriately designed. The value is to produce a suitable equivalent impedance.
除此之外，第一二極體134與第一發光二極體單元131為順向串聯，且第二二極體135與第二發光二極體單元132為順向串聯。也就是說，第一二極體134與第一發光二極體單元131的導通電流方向相同，且第二二極體135與第二發光二極體單元132的導通電流方向相同。以圖3A為例，第一發光二極體單元131的負極電性連接第一二極體134的正極(陽極)，且第二發光二極體單元132的正極電性連接第二二極體135的負極(陰極)。然而，依據同樣原理，第一二極體134與第一發光二極體單元131的串聯順序可以互換，第二二極體135與第二發光二極體單元132的串聯順序也可以互換。 In addition, the first diode 134 and the first LED unit 131 are connected in series, and the second diode 135 and the second LED unit 132 are connected in series. That is, the first diode 134 has the same conduction current direction as the first LED unit 131, and the second diode 135 has the same conduction current direction as the second LED unit 132. As shown in FIG. 3A , the cathode of the first LED unit 131 is electrically connected to the anode (anode) of the first diode 134 , and the cathode of the second LED unit 132 is electrically connected to the second diode. The negative electrode (cathode) of 135. However, according to the same principle, the series order of the first diode 134 and the first LED unit 131 can be interchanged, and the series order of the second diode 135 and the second LED unit 132 can also be interchanged.
依據上述，以圖3A的例子，電容133的第一端經由電力接收單元11電性連接交流電源AC的火線L，第一二極體134的陰極電性連接電容133的第二端，第一發光二極體單元131的負極電性連接第一二極體134的陽極(正極)，第一發光二極體單元131的正極電性連接交流電源AC的零線N，第二二極體135的陽極(正極)電性連接電容133的第二端，第二發光二極體單元132的正極電性連接第二二極體135的陰極(負極)，第二發光二極體單元132的負極電性連接交流電源AC的零線N。 According to the example of FIG. 3A, the first end of the capacitor 133 is electrically connected to the live line L of the AC power source AC via the power receiving unit 11, and the cathode of the first diode 134 is electrically connected to the second end of the capacitor 133. The anode of the LED unit 131 is electrically connected to the anode (positive electrode) of the first diode 134. The anode of the first LED unit 131 is electrically connected to the neutral line N of the AC power source AC, and the second diode 135. The anode (positive electrode) is electrically connected to the second end of the capacitor 133, the cathode of the second LED unit 132 is electrically connected to the cathode (negative electrode) of the second diode 135, and the cathode of the second LED unit 132. Electrically connected to the neutral line N of the AC power supply AC.
再參照圖3A，先考慮尚未連接控制單元136的情況，第一發 光二極體單元131與第二發光二極體單元132分別在交流電源AC的交流負半週與交流半正週被驅動。在交流正半週，第一發光二極體單元131不導通，當第二發光二極體單元132的跨壓達到第二發光二極體單元132的導通電壓時，則第二發光二極體單元132可以被導通而發光。在交流負半週，第二發光二極體單元132不導通，當第一發光二極體單元131的跨壓達到第一發光二極體單元131的導通電壓時，則第一發光二極體單元131可以被導通而發光。同理，若將圖3A的第一發光二極體單元131以圖3A的第二發光二極體單元132取代，並將圖3A的第二發光二極體單元132以第一發光二極體單元131取代，則第一二極體134與第二二極體135需互換(成為第一二極體134’與第二二極體135’)，而改變為圖3B的電路。如圖3B所示之發光二極體控制電路13’中，被取代後的第一發光二極體單元131’是在交流正半週被驅動，且被取代後的第二發光二極體單元132’是在交流負半週被驅動。綜合圖3A與圖3B的實施例可知，在交流電源AC的交流正半週，本發明的第一發光二極體單元與第二發光二極體單元的其中之一被驅動，且在交流電源AC的交流負半週，本發明的第一發光二極體單元與第二發光二極體單元的其中另一被驅動。 Referring again to FIG. 3A, first consider the case where the control unit 136 has not been connected yet, the first issue The photodiode unit 131 and the second light emitting diode unit 132 are driven by the alternating current half cycle and the alternating current half positive cycle of the alternating current power source AC, respectively. During the positive half cycle of the alternating current, the first light emitting diode unit 131 is not turned on, and when the voltage across the second light emitting diode unit 132 reaches the turn-on voltage of the second light emitting diode unit 132, the second light emitting diode Unit 132 can be turned on to illuminate. During the negative half cycle of the alternating current, the second light emitting diode unit 132 is not turned on. When the voltage across the first light emitting diode unit 131 reaches the turn-on voltage of the first light emitting diode unit 131, the first light emitting diode The unit 131 can be turned on to emit light. Similarly, if the first light emitting diode unit 131 of FIG. 3A is replaced by the second light emitting diode unit 132 of FIG. 3A, and the second light emitting diode unit 132 of FIG. 3A is the first light emitting diode. When the unit 131 is replaced, the first diode 134 and the second diode 135 are interchanged (becoming the first diode 134' and the second diode 135'), and are changed to the circuit of FIG. 3B. In the light-emitting diode control circuit 13' shown in FIG. 3B, the replaced first light-emitting diode unit 131' is a second light-emitting diode unit that is driven in the positive half cycle of the alternating current and is replaced. 132' is driven during the negative half cycle of the exchange. 3A and FIG. 3B, in the positive half cycle of the alternating current power source AC, one of the first light emitting diode unit and the second light emitting diode unit of the present invention is driven, and is in an alternating current power source. The alternating current of the AC is half a cycle, and the other of the first light emitting diode unit and the second light emitting diode unit of the present invention is driven.
接著，考慮控制單元136已連接的情況，參照圖3A，控制單元136可用於改變第二發光二極體單元132的導通電流的狀態。控制單元136並聯第二發光二極體單元132，且依據外部訊號EC控制第二發光二極體單元132的發光狀態。外部訊號EC可以來自可控發光二極體的電力輸出裝置的外部，如插座、延長線或充電器的外部。例如，外部訊號EC可以來自交流電源AC其零線N與地線PE之間的異常電壓，但本發明並不因此限定。在圖3A中，控制單元136經由電性連接第二發光二極體單元132的正極與負極，藉此並聯第二發光二極體單元132。同理，控制單元136也可以改為並聯第一發光二極體單元131，以控制第一發光二極體單元 131的發光狀態。 Next, considering the case where the control unit 136 is connected, referring to FIG. 3A, the control unit 136 can be used to change the state of the on-current of the second LED unit 132. The control unit 136 connects the second LED unit 132 in parallel, and controls the illumination state of the second LED unit 132 according to the external signal EC. The external signal EC can come from the outside of the power output device of the controllable light-emitting diode, such as the socket, the extension cable or the outside of the charger. For example, the external signal EC may come from an abnormal voltage between the neutral line AC and the ground line PE of the AC power source AC, but the present invention is not limited thereto. In FIG. 3A , the control unit 136 electrically connects the positive and negative electrodes of the second LED unit 132 , thereby connecting the second LED unit 132 in parallel. Similarly, the control unit 136 can also be connected to the first light-emitting diode unit 131 in parallel to control the first light-emitting diode unit. The light-emitting state of 131.
未連接控制單元的136的發光二極體單元(如第一發光二極體單元131)，可以依據其導通電流方向而在交流電源AC的交流正半週或負半週被驅動，且不受到控制單元136的影響。在一個實際的應用情況，未連接控制單元的136的發光二極體單元(如第一發光二極體單元131)的發光可用以指示並代表交流電源AC正常供電的狀態，或者因交流電源AC正常供電使得未連接控制單元的136的發光二極體單元可做一般正常照明，但本發明並不因此限定。 The light emitting diode unit (such as the first light emitting diode unit 131) to which the control unit 136 is not connected may be driven in the positive half cycle or the negative half cycle of the alternating current power source AC according to the direction of the conduction current thereof, and is not subjected to The influence of the control unit 136. In a practical application, the illumination of the LED unit (eg, the first LED unit 131) of the unconnected control unit 136 can be used to indicate and represent the state in which the AC power source AC is normally powered, or because of the AC power source AC. The normal power supply allows the light-emitting diode unit of the unconnected control unit 136 to perform normal normal illumination, but the present invention is not limited thereto.
相對的，與控制單元的136並聯的發光二極體單元(如第二發光二極體單元132)，其導通與發光狀態則能受到控制單元136的影響。詳細的說，控制單元136可依據外部訊號EC控制所並聯的發光二極體單元(如第二發光二極體單元132)的導通狀態(包括導通電流大小)，藉此影響發光狀態。因此，與控制單元的136並聯的發光二極體單元其發光狀態可以例如用於指示異常狀態，但本發明並不因此限定。控制單元的136的示範性實施方式將於後續實施例進一步說明。另外，本發明的發光二極體控制電路並不限定於圖3A與圖3B的電路連接方式。如前面提到的，發光二極體控制電路的各元件之間的串聯順序可以互換，產生同樣或類似於上述發光模式的等效電路或相似電路架構都是屬於本發明實施例的範疇。 In contrast, the light-emitting diode unit (such as the second light-emitting diode unit 132) connected in parallel with the control unit 136 can be affected by the control unit 136 by its conduction and illumination states. In detail, the control unit 136 can control the conduction state (including the on-current magnitude) of the parallel LED unit (such as the second LED unit 132) according to the external signal EC, thereby affecting the illumination state. Therefore, the light-emitting state of the light-emitting diode unit in parallel with the control unit 136 can be used, for example, to indicate an abnormal state, but the present invention is not limited thereto. An exemplary embodiment of control unit 136 will be further described in subsequent embodiments. Further, the light-emitting diode control circuit of the present invention is not limited to the circuit connection mode of FIGS. 3A and 3B. As previously mentioned, the series order between the elements of the LED control circuit can be interchanged, and equivalent circuits or similar circuit architectures that produce the same or similar illumination patterns are within the scope of embodiments of the present invention.
接著，請參照圖4，圖4是本發明另一實施例提供的具有可控發光二極體的電力輸出裝置的發光二極體控制電路的電路圖。相較於圖3A，圖4的發光二極體控制電路增加了異常電流抑制單元137與輔助控制單元138。異常電流抑制單元137串聯電容133，也就是說，異常電流抑制單元137串聯電容133，且串聯彼此反向並聯的第一發光二極體單元131與第二發光二極體單元132。異常電流抑制單元137可用於防止交流電源AC的突波電壓或突波電流 對元件造成的損壞，例如當市電發生突波電壓或突波電流時，極可能在第一發光二極體單元131、第二發光二極體單元132及/或其他元件上產生突波電壓或突波電流，透過設置異常電流抑制單元137可用以防止突波電壓或突波電流損毀發光二極體及其他元件。異常電流抑制單元137例如包括電感或電阻，但本發明並不因此限定。依據串聯的原理，相較於圖4，異常電流抑制單元137可以改連接於火線L與電容133之間，異常電流抑制單元137也可以改連接於零線N與彼此反向並聯的第一發光二極體單元131與第二發光二極體單元132之間，但本發明並不因此限定，只要使異常電流抑制單元137能夠串聯電容133即可。 Next, please refer to FIG. 4. FIG. 4 is a circuit diagram of a light-emitting diode control circuit of a power output device with a controllable light-emitting diode according to another embodiment of the present invention. Compared to FIG. 3A, the LED control circuit of FIG. 4 adds an abnormal current suppression unit 137 and an auxiliary control unit 138. The abnormal current suppressing unit 137 is connected in series with the capacitor 133, that is, the abnormal current suppressing unit 137 is connected in series with the capacitor 133, and the first light emitting diode unit 131 and the second light emitting diode unit 132 are connected in series in anti-parallel with each other. The abnormal current suppression unit 137 can be used to prevent a surge voltage or a surge current of the AC power source AC Damage to the component, such as when a surge voltage or surge current occurs in the mains, it is highly probable that a surge voltage is generated across the first LED unit 131, the second LED unit 132, and/or other components. The surge current, through the set abnormal current suppression unit 137, can be used to prevent the surge voltage or surge current from damaging the light-emitting diode and other components. The abnormal current suppressing unit 137 includes, for example, an inductance or a resistance, but the present invention is not limited thereto. According to the principle of series connection, compared with FIG. 4, the abnormal current suppressing unit 137 can be connected between the live line L and the capacitor 133, and the abnormal current suppressing unit 137 can also be connected to the zero line N and the first light emitting in anti-parallel with each other. The diode unit 131 and the second light-emitting diode unit 132 are provided between each other, but the present invention is not limited thereto, and the abnormal current suppressing unit 137 may be connected to the capacitor 133 in series.
再參照圖4，輔助控制單元138電性連接於第二二極體135的陰極(負極)與第二發光二極體單元132的正極之間，但本發明並不因此限定。只要使輔助控制單元138串聯第二發光二極體單元132，且使串聯的輔助控制單元138與第二發光二極體單元132並聯於控制單元136即可。輔助控制單元138可以包括電阻、電容、變壓器、二極體、稽納二極體或整流器等，或者是包括上述元件的至少其中之一，但本發明並不因此限定。輔助控制單元138可例如用以增加阻抗或電阻，但本發明並不因此限定。控制單元136可用於改變第二發光二極體單元132的導通電流的狀態，並配合輔助控制單元138，藉以在控制單元136收到外部訊號時改變第二發光二極體單元132的發光狀態。依據類似的原理，當控制單元136改為並聯於第一發光二極體單元131時，輔助控制單元138則串聯第一發光二極體單元131，且使串聯的輔助控制單元138與第一發光二極體單元131並聯於控制單元136。換句話說，第一發光二極體單元131與第二發光二極體單元132角色互換的情況，其僅是依據本發明實施例的同一個原理而進行電路設計上的選擇，上述兩種情況都是屬於本發明實施例的範疇。 Referring again to FIG. 4, the auxiliary control unit 138 is electrically connected between the cathode (negative electrode) of the second diode 135 and the positive electrode of the second LED unit 132, but the invention is not limited thereto. As long as the auxiliary control unit 138 is connected in series with the second light emitting diode unit 132, the auxiliary control unit 138 and the second light emitting diode unit 132 connected in series may be connected in parallel to the control unit 136. The auxiliary control unit 138 may include a resistor, a capacitor, a transformer, a diode, a sinus diode, or a rectifier, or the like, or at least one of the above-described elements, but the present invention is not limited thereto. The auxiliary control unit 138 can be used, for example, to increase impedance or resistance, but the invention is not so limited. The control unit 136 can be used to change the state of the on-current of the second LED unit 132, and cooperate with the auxiliary control unit 138 to change the illumination state of the second LED unit 132 when the control unit 136 receives the external signal. According to a similar principle, when the control unit 136 is instead connected in parallel to the first LED unit 131, the auxiliary control unit 138 is connected in series with the first LED unit 131, and the auxiliary control unit 138 and the first illumination are connected in series. The diode unit 131 is connected in parallel to the control unit 136. In other words, in the case where the roles of the first light-emitting diode unit 131 and the second light-emitting diode unit 132 are interchanged, the circuit design is selected only according to the same principle of the embodiment of the present invention. All belong to the scope of the embodiments of the present invention.
接著，請參照圖5，圖5是本發明另一實例提供的發光二極體 控制電路及其控制單元的電路圖。控制單元136包括偵測單元DET以及開關S1。在一實施例中，偵測單元DET可以是微控制器(MCU)，但本發明並不因此限定。偵測單元DET電性連接零線N與地線PE，用以偵測零線N與地線PE之間的電壓差，並據此產生控制訊號。一般而言，在正常情況零線N與地線PE之間不應有電壓差(或電位差)，若有電壓差則表示此電源電路發生異常。零線N與地線PE之間的電壓差就是前述的外部訊號EC的一個示範性的實施例，但並非用以限定本發明。開關S1具有第一端與第二端，開關S1經由開關S1的第一端與第二端而並聯第二發光二極體單元132，且開關S1受控於偵測單元DET的控制訊號。如圖5所示，開關S1例如是雙載子接面電晶體(BJT)，開關S1的第一端是集極，開關S1的第二端是射極，雙載子接面電晶體的基極則接收偵測單元DET的控制訊號。然而，本發明並不限定開關S1的實施方式，上述的雙載子接面電晶體(BJT)僅是一個用以幫助說明的實施例，雙載子接面電晶體(BJT)可以替換為具有等效或類似功能的開關元件。 Next, please refer to FIG. 5. FIG. 5 is a light emitting diode provided by another example of the present invention. A circuit diagram of the control circuit and its control unit. The control unit 136 includes a detecting unit DET and a switch S1. In an embodiment, the detecting unit DET may be a microcontroller (MCU), but the invention is not limited thereto. The detecting unit DET is electrically connected to the neutral line N and the ground line PE for detecting the voltage difference between the neutral line N and the ground line PE, and generating a control signal accordingly. In general, there should be no voltage difference (or potential difference) between the neutral line N and the ground line PE. If there is a voltage difference, it indicates that the power circuit is abnormal. The voltage difference between the neutral line N and the ground line PE is an exemplary embodiment of the aforementioned external signal EC, but is not intended to limit the invention. The switch S1 has a first end and a second end. The switch S1 is connected to the second LED unit 132 via the first end and the second end of the switch S1, and the switch S1 is controlled by the control signal of the detecting unit DET. As shown in FIG. 5, the switch S1 is, for example, a bipolar junction transistor (BJT), the first end of the switch S1 is a collector, the second end of the switch S1 is an emitter, and the base of the bipolar junction transistor is The pole receives the control signal of the detection unit DET. However, the present invention does not limit the implementation of the switch S1. The above-described bipolar junction transistor (BJT) is only one embodiment to help illustrate, and the bi-carrier junction transistor (BJT) can be replaced with Switching element of equivalent or similar function.
再參照圖5，當零線N與地線PE之間的電壓差(異常電壓)大於一門檻值時，偵測單元DET利用控制訊號控制開關S1的導通狀態，藉以控制第二發光二極體單元132發光、熄滅、閃爍或調整亮度。換句話說，當零線N與地線PE之間的沒有異常電壓或者電壓差非大於預設的門檻值時，第二發光二極體單元132維持一般操作(不受控制單元136的影響)，即在交流電源AC的交流正半週被驅動，且在第二發光二極體單元132的跨壓達到其導通電壓時發光。當零線N與地線PE之間產生異常電壓且電壓差大於預設的門檻值時，控制單元136改變第二發光二極體單元132發光的狀態。在另一實施例中，當零線N與地線PE之間的電壓差大於門檻值時，開關S1可以旁通第二發光二極體單元132，使第二發光二極體單元132熄滅。 Referring to FIG. 5, when the voltage difference (abnormal voltage) between the neutral line N and the ground line PE is greater than a threshold value, the detecting unit DET controls the conduction state of the switch S1 by using the control signal, thereby controlling the second light emitting diode. Unit 132 illuminates, extinguishes, flashes, or adjusts brightness. In other words, when there is no abnormal voltage or the voltage difference between the neutral line N and the ground line PE is not greater than the preset threshold value, the second light emitting diode unit 132 maintains the general operation (not affected by the control unit 136). That is, it is driven in the positive half cycle of the alternating current power source AC, and emits light when the voltage across the second light emitting diode unit 132 reaches its on voltage. When an abnormal voltage is generated between the neutral line N and the ground line PE and the voltage difference is greater than a preset threshold value, the control unit 136 changes the state in which the second light emitting diode unit 132 emits light. In another embodiment, when the voltage difference between the neutral line N and the ground line PE is greater than the threshold value, the switch S1 can bypass the second light emitting diode unit 132 to extinguish the second light emitting diode unit 132.
再參照圖6，圖6是本發明另一實施例提供的發光二極體控制電路的電路圖。在圖6中，控制單元136是以兩個二極體D1、D2、一個電容C1與一個電阻R1實現電壓偵測電路，且控制以雙載子接面電晶體(BJT)實現的開關S1。二極體D1的陽極電性連接零線N，二極體D1的陰極電性連接地線(PE)。二極體D2的陽極電性連接二極體D1的陰極，二極體D2的陰極電性連接電容C1的第一端，電容C2的第二端電性連接零線N，電阻R1電性連接於二極體D2的陰極與開關S1的控制端(BJT的基極)之間。異常電流抑制單元137在圖6中以電阻實現。輔助控制單元138是以稽納二極體實現，其陽極(正極)電性連接第二發光二極體單元132的正極，其陰極(負極)電性連接第二二極體135的陰極(負極)。需要注意的是，圖6的電路僅是用以幫助說明，並非用以限定本發明。 Referring again to FIG. 6, FIG. 6 is a circuit diagram of a light-emitting diode control circuit according to another embodiment of the present invention. In FIG. 6, the control unit 136 implements a voltage detecting circuit with two diodes D1, D2, a capacitor C1 and a resistor R1, and controls a switch S1 implemented by a bipolar junction transistor (BJT). The anode of the diode D1 is electrically connected to the neutral line N, and the cathode of the diode D1 is electrically connected to the ground (PE). The anode of the diode D2 is electrically connected to the cathode of the diode D1, the cathode of the diode D2 is electrically connected to the first end of the capacitor C1, the second end of the capacitor C2 is electrically connected to the neutral line N, and the resistor R1 is electrically connected. Between the cathode of the diode D2 and the control terminal of the switch S1 (the base of the BJT). The abnormal current suppression unit 137 is implemented as a resistor in FIG. The auxiliary control unit 138 is implemented by an inductor diode, and an anode (positive electrode) is electrically connected to the anode of the second LED unit 132, and a cathode (negative electrode) is electrically connected to the cathode of the second diode 135 (negative cathode). ). It should be noted that the circuit of FIG. 6 is for illustrative purposes only and is not intended to limit the invention.
綜上所述，本發明實施例所提供的電力輸出裝置及其發光二極體控制電路，在連接外部交流電時可利用電容提供節能低功耗的發光二極體驅動，而不需要使用交直流轉換電路，且可控制電路的照明或發光指示效果。第一發光二極體單元與第二發光二極體單元可以用於照明或發光指示，未連接控制單元的發光二極體單元不受控制單元影響，連接控制單元的發光二極體單元受到外部訊號而影響，藉此兩個發光二極體單元可提供正常照明或發光指示，也可提供異常照明或發光指示。另外，增加的異常電流抑制單元也可防止突波電壓或突波電流對發光二極體及其他元件造成損壞。 In summary, the power output device and the LED control circuit thereof provided by the embodiments of the present invention can use the capacitor to provide energy-saving and low-power LED driving when connecting external AC power, without using AC and DC. The conversion circuit can control the illumination or illumination indication effect of the circuit. The first light emitting diode unit and the second light emitting diode unit can be used for illumination or illumination indication, and the light emitting diode unit not connected to the control unit is not affected by the control unit, and the light emitting diode unit connected to the control unit is externally The signal is affected by the fact that the two LED units provide normal illumination or illumination indication, as well as an abnormal illumination or illumination indication. In addition, the added abnormal current suppression unit can also prevent the surge voltage or surge current from causing damage to the LED and other components.
以上所述僅為本發明之實施例，其並非用以侷限本發明之專利範圍。 The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention.
11‧‧‧電力接收單元 11‧‧‧Power receiving unit
13‧‧‧發光二極體控制電路 13‧‧‧Lighting diode control circuit
131‧‧‧第一發光二極體單元 131‧‧‧First LED unit
132‧‧‧第二發光二極體單元 132‧‧‧Second light-emitting diode unit
133‧‧‧電容 133‧‧‧ Capacitance
134‧‧‧第一二極體 134‧‧‧ first diode
135‧‧‧第二二極體 135‧‧‧second diode
136‧‧‧控制單元 136‧‧‧Control unit
L‧‧‧火線 L‧‧‧FireWire
N‧‧‧零線 N‧‧‧Zero
PE‧‧‧地線 PE‧‧‧ ground wire
EC‧‧‧外部訊號 EC‧‧‧External signal
Claims (11)
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| TW201735731A TW201735731A (en) | 2017-10-01 |
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| CN101650007A (en) * | 2008-08-14 | 2010-02-17 | 南京汉德森科技股份有限公司 | Power alternating current LED light source |
| CN103867950A (en) * | 2012-12-11 | 2014-06-18 | 朗捷科技股份有限公司 | LED lamp tube compatible with electronic stabilizer |
| TWM493788U (en) * | 2014-07-25 | 2015-01-11 | Sheng Electric Wire & Cable Co Ltd I | Night lamp structure with USB charging socket |
| TW201611660A (en) * | 2014-09-05 | 2016-03-16 | 張希 | PNP autonomous LED troffer with distributed dimming controls |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650007A (en) * | 2008-08-14 | 2010-02-17 | 南京汉德森科技股份有限公司 | Power alternating current LED light source |
| CN103867950A (en) * | 2012-12-11 | 2014-06-18 | 朗捷科技股份有限公司 | LED lamp tube compatible with electronic stabilizer |
| TWM493788U (en) * | 2014-07-25 | 2015-01-11 | Sheng Electric Wire & Cable Co Ltd I | Night lamp structure with USB charging socket |
| TW201611660A (en) * | 2014-09-05 | 2016-03-16 | 張希 | PNP autonomous LED troffer with distributed dimming controls |
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