TWM385163U - Output-voltage variable power adapter - Google Patents

Description

M3^163 V. New description: [New technical field] This creation is about a power converter (p〇weradapter), and especially a power converter with variable output voltage. [Prior Art] Conventional power converters are mostly devices with fixed output voltages, that is, different power converters are required to provide electronic device power in different applications. For example, when you are on a business trip, you can use your mobile phone and notebook electronic power device. . In addition, if an electronic device is no longer used, the remaining source converter of the electronic device cannot be galvanized on other products, resulting in waste of resources. Therefore, it has seen the emergence of products with variable output power converters on the market. FIG. 1 is a schematic diagram of a conventional power converter with variable output voltage. See ^ 'Power Conversion H丨 Includes Power Conversion Unit n. The power conversion unit U receives, for example, the mains supply through the AC power supply (AC circle ecto) 12, and supplies the input voltage to the DC voltage, and according to the finger-off 13, the mosquito DC power level Z is then passed. DC connection n (DC: _eet〇r) 14 output DC voltage to & power supply for the electronic device. In this example, the broadcast position of the dip switch 13 is switched to the service, that is, the power conversion unit 11 converts the input AC voltage into a DC voltage of 19V. The power converter 1 changes the output voltage by the slot switching of the externally visible dip switch 13, which inevitably causes the change of the 2 voltage under the normal operation, which may cause damage to the electronic device. . The mechanical, mechanical switch 13 also has problems with service life and reliability. [New content] 3 M385163 In the Utl, the purpose of the Utl is to propose an output electric-radiation power supply, which causes a human error to cause a loss of the input side to improve the stability of the 1% power supply. This creation introduces an iH-hybrid electric changer and a plurality of connectors. Switching π 匕 匕 switching power supply to external power supply lion JI: L conversion early 70 is used to receive external power supply and will press «Qing, suspected out of the DC output and the third round of 胄 + w $ 胄 resistance two ^ respectively Lightly connect to the first output. The cut power supply converts a single element m into two to the second output and the third to change 7L according to the second output of the second output. End, and the five outputs are connected to the fourth output terminal 'the second input eight ends two four: and: this, the input terminal Μ =, __ two input eight ends and the second electricity = resistance = electrical coupling to the cut: The first input end and the third input end are coupled to each other. When the - connector is out, the second input is lightly connected to the first: the first input end of the connector is connected to the first through the fourth input: the first reading is coupled to the third output, the switching power supply Output when converting unit: =^° When different connectors are lightly connected; first, the insulating tube is hollow tube:: 4·2 is provided as the second round inlet and the other end is lifted. The end of the second metal tube is used as the output of the fifth. Insulating tube provides first

' I = Hi metal tube _ insulation. The first input resistor of the rhyme pin-end material is present, then: the end of the electric/from the fourth resistor, if the third right fourth resistor is present, the other is connected to the _^1^ Four power=Setting (4) The third power of the resistance value (4) and/or the output of the first head __ to the power converter unit of the city. Change the connection by the connection "° With the slot of the externally visible dialing _? ===, in contrast, this creation uses different connector to change the way to change (four) power out_electric_changer mis-touched reading ___, α_ succession for the special mention and other purposes The features and advantages are more obvious and easy to understand. The following is a detailed description of the present invention, and is described in detail below with reference to the accompanying drawings. [Embodiment] FIG. 2 is an output voltage 2 according to an embodiment of the present invention. Referring to Fig. 2, the power converter 2 includes a switching type electric== power supply lines 22 and 23, an alternating current connector 24, a connecting base 25, and a plurality of connecting heads 26 to 28. = the switching unit 2 passes through the power line & - Connect to the AC connector, use the AC = connector to receive, for example, the AC provided by the mains, and the AC voltage of the input The DC voltage is switched into the connector 25' through the power cord 23 and the appropriate connector is selected from the connectors 26 to 28, for example, according to the power socket specification of the electronic device. The power supply voltage 12ν is required to select the connector 26 to be inserted into the connector 25, and then the DC connector $ composed of the connector 25 and the connector 26 is inserted into the power socket of the electronic device, and the switched power conversion unit 21 will pass through the DC connector. 26, touch the DC voltage of 12V to provide power supply for the electronic device. Therefore, the power supply of this creation is 2 _ not _ connection _ change the output voltage of the square wire, and the principle of the electric 5 M385163 circuit will be described later. No. The connector 26 includes a first metal tube 3i, a flute-asson 33 34, and a resistor _ 'where the first metal tube 31s, 3 and the 32th viewing edge tube 33 are both hollow tubular columnar structures. The first metal tube One end of the 31 is provided as the first input end 261 and the other end is provided as the fourth output end 2, that is, the first input ^ 261 is lightly connected (or electrically connected) to the fourth output end 264. The second metal tube One end of (10) is provided as the second loser The input end 262 and the other end are provided as a fifth output terminal, that is, the second input end is deducted to the fifth output end 265. The insulating tube 33 provides insulation between the first metal tube 31 and the second gold layer tube 32. One end of the metal spike 34 is provided as a third input terminal (10) and the other end is connected to the end of the third resistor Rf3, and the third resistor (10) is further connected to the second metal tube 32 through the hole '35. That is, the third resistor Rf3_ is respectively connected to the second input terminal 262 (or the fifth output terminal 265) and the third input terminal 263, wherein the third resistor

Rf3 case, composed of a resistive substance or a coil. The second metal tube is also covered with an insulating material 36 to provide a bias and can be marked with a power socket size M1 and a power supply voltage 12v for the electronic device to which the connector 26 is applied as shown in FIG. Select. The first metal member 31 and the hole 35 are also filled with an insulating material 37 to fix and accommodate the metal spike 34 and the resistor Rf3. Therefore, the connector 26 has a first input terminal 261, a second input terminal 262, a third input terminal 263, a fourth output terminal 264, and a fifth output terminal 265 and includes a third resistor Rf3. The first input terminal 261 is coupled. The second input terminal 262 is coupled to the fifth output terminal 265 , and the two ends of the resistor Rf3 are coupled to the second input terminal 262 and the third input terminal 263 . Correspondingly, the connector 25 has a first output terminal 251, a second output terminal 252 and a third output terminal 253. When the connector 26 is coupled to the connector 25, the first input end 2616 M385163 the wheel-out terminal 251 'the second wheel-in terminal 262 _ to the second output terminal 2 is coupled to the second output terminal 253 'Connecting the connector 26 to the switchable electric unit 21 through the connector block 25, the tree switch type electric switch unit 21 head 26 and passing through the fourth output end 264 of the connector 26 and the fifth: ϊ ϊΐΐ ί Different connector _ to switching mode conversion 70 21 can output different output voltage Vo; in this example, the connector 26 ° & for 12V output voltage Vo, connectors 27 and 28 can provide the output of the mill Electricity (four). 1 electric = the main office - the implementation of the jing _ the fine variable (four) source converter ^ = 4 娜娜转鲜元2 卜 power cord 22 and 23, AC with multiple connectors 26~28' here only The connector 26 is taken as an example. , / / yuan 21 through the power line 22 lightly connected to the AC connector 24 to receive the AC = AC input AC voltage Vac converted to DC voltage VdC, and then switch to i through the electric Lin 23 reduced to the connector 25 continued The connector, the output 251, and the second output 252 output a DC voltage Vdc. Switching power supply to the fresh element 21 package minus Xuan Xun ^, rectification, DC to and voltage feedback control circuit. The electromagnetic interference device passes through the power supply line 22 to the / claw connection thief 24 to receive the AC voltage yac and is used to suppress the conduction type. In this example, the electromagnetic dry ship includes a capacitor α1 and an inductor = X1 for filtering the differential mode. Noise, inductance H La is used to eliminate common mode noise. The rectifier circuit Z to the electromagnetic dry_wave device is used to pass the electromagnetic dry_wave (four) alternating voltage Vac to a non-textile DC off Vbus; in this example, the rectifier circuit includes a bridge type = BD1 and a capacitor α, an alternating voltage Vac It is rectified into a ripple 罝~ voltage by a bridge rectifier, and then filtered by a capacitor C1 into a DC voltage Vbus with a small chopping. The DC-to-DC converter is used to rectify the circuit and is used to convert the DC voltage Vbus to 7 M385163 Γ Γ DC voltage Vdc; in this example, the DC-to-DC converter is a flyback y ack straight ", L to DC conversion benefit, which includes power switch q, transformer τ Bu 2, D1, inductor ϋ L1 and capacitor C2, through the pulse width modulation (puise (four) ratio) is simply referred to as _ controller output let the signal control power switch (1) = The DC voltage Vbus is converted into a DC voltage Vdc; but it is not limited thereto. For example, the device can also be a full-bridge type, a half-bridge type or a forward type (four), etc., to the third output terminal 253 and the DC to The DC converter adjusts the DC voltage by the voltage on the output terminal 253 (ie, the feedback voltage Vfb). In this example, the voltage feedback control circuit includes a first resistor, a second resistor, and a second resistor, R1 and R3. , the electric grid C3, the light and light combiner 0C1 and the shunt regulator DZ1. The two ends are respectively coupled to the first output end 251 of the connecting base 25 and the third end of the third transmission m' mountain one resistor Rf2 respectively The second output end 252 that is connected to the connector 25 is blocked by j3 253, that is, the DC voltage Vdc The first resistor Rfl and the second power = generate a feedback power on the third output terminal 253, and then pass the light to the imm & link to the stable feedback signal Vfb to return to the TM controller to control the power switch The switching of Q1 is to adjust the DC voltage Vdc. For the type of the Zener shunt regulator with a reference voltage of 1.541, the fuse is ^1 for 1GGkQ and the second resistor for Rf2 is 33. _ design, 10V The dc voltage Vdc outputted by the unit 21 is fixed at a time when the VdC is passed through the first resistor Rfl and the voltage at the output 253 of the second resistor Rf2 or the feedback voltage Vfb is higher than 2. 5V. , because the gate terminal G voltage is higher than 2.5V and the anode terminal A and the cathode terminal κ are lower than 2. 5V, the shunt regulator will be Yang because its gate terminal G voltage is lower than 8 M385163 2. 5V. The extreme A and the cathode terminal κ are not turned on, and the light-emitting diode DU of the photocoupler 〇cl will not emit light because no current flows, thereby causing the PWM controller to control the power switch Q1 to conduct to raise the DC voltage Vdc. Therefore, the feedback voltage vfb is stabilized at 2.5 V, and the relationship between the DC voltage Vdc and the feedback voltage Vfb is Vfb=Vdc*Rf2/(RfHRf2), and the DC voltage Vdc is stabilized at 10V. I Although the direct "IL voltage Vdc is fixed to ιον at the time of design, the DC voltage Vdc will be changed after the connector 26 is coupled to the connector 25, and at this time, the output of the switching power supply conversion unit 21 is changed. The DC voltage Vdc is equal to the output power of the connector 26 output. This φ is because the relationship between the original DC voltage Vdc and the feedback voltage Vfb Vfb=Vdc邛f2/(Rfl+Rf2) will be changed to after the connector 26 is coupled to the connector 25

Vfb=Vo*(Rf2| |Rf3)/[Rfl+(Rf2||Rf3)], where (Rf2| |Rf3)=(Rf2*Rf3)/(Rf2+Rf3). Please refer to FIG. 5 , which is a graph of the output voltage % of the third resistor Rf3 at different resistance values after the connector 26 shown in FIG. 4 is coupled to the connector 25 , and the abscissa | is the second resistor and the The resistance value of the third resistor Rf3 in parallel, wherein the resistance value of the second resistor Rf2 has been designed to be fixed to 33. 3kQ, the ordinate is the output power 'voltage v〇; ^, by changing the resistance of the third resistor Rf3 The values are designed to provide different connectors 26 such that different output voltages v〇 can be provided after coupling the different connectors 26 to the connector 25. 6 and 7 are circuit diagrams of an alternate embodiment of the connector 26 shown in Fig. 4, respectively. Referring to Figures 3, 6 and 7, the connectors 36 and 46 are also composed of metal tubes 31 and 32, an insulating tube 33 and a metal needle 34 as shown in Figure 3, so that the connectors 36 and 46 are as shown in Figure 3 The connector 26 has the same input terminals 261-263 and wheel terminals 264 and 265'. Referring to FIG. 6, the connector 36 internally includes a fourth resistor Rf4, and the fourth resistor Rf4 is coupled to the first input terminal 261 (or the fourth output terminal 264) and the third input: 263, respectively. The given slamming pressure Vol after the connection of the connector 36 to the connector 25 shown in FIG. 4 satisfies Vfb=Vol*Rf2/[(Rfl| |Rf4)+Rf2], where (R(1)丨^4) = (Rfl*Rf4)/(Rfl+Rf4). Thus, different connector heads 36 can be designed by varying the resistance value of the fourth resistor Rf4 so that different output voltages Vol can be provided after coupling the different connectors 36 to the connector block 25. Referring to FIG. 7, the connector 46 includes a third resistor Rf3 and a fourth resistor Rf4, and the third resistor Rf3 is coupled to the second input terminal 262 (or the fifth output terminal 265) and the third terminal, respectively. The input end 263 and the fourth resistor lamp 4 are respectively coupled to the first input end 261 (or the fourth output end 264) and the third input end 263. The output voltage v 〇 2 provided after coupling the connector 46 to the connector 25 shown in FIG. 4 satisfies vfb=Vo2*·(Rf2| |Rf3)/[(Rfl| |Rf4)+(Rf2| | Rf3)], where (Rf2| | Rf3) = (Rf2 * Rf3) / (Rf2 + Rf3), (Rfl I | Rf4) = (Rfl * Rf4) / (Rf1 + Rf4). Therefore, different connector heads 46 can be designed by changing the resistance values of the second resistor Rf3 and/or the fourth resistor pin 4, so that different couplings 46 can be provided after coupling the different connectors 46 to the connector block 25. Voltage Vo2. Lu Hao τ, mentioned above, the third resistor with different resistance values in the different connectors is and/or the fourth electric (four), so that the same connecting shaft is connected to the switching electric conversion unit through the connecting fabric _ Output Xia. Compared with the power converter that can change the output voltage by the existing picking department (10), this creation uses the second connection method to change the output power of the output. The man-made program leads to (4) the change of the title to improve the stability of the electricity service. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to be used in any way, and the scope of the present invention is not limited to the spirit and scope of the present invention. Special: Scope; [Simple description of the diagram] Figure 1 is a schematic diagram of a conventional power converter with a variable output. Fig. 2 is a diagram of the power supply converter M385163 whose output voltage is variable according to the creation of the embodiment. " is a schematic cross-sectional view of a connector of a power converter having a variable output voltage according to an embodiment of the present invention. 4 is a circuit diagram of a power converter with a turn-off voltage according to an embodiment of the present invention. FIG. 5 is a graph showing the output voltage of the third resistor at a non-resistance value after the connector shown in FIG. 4 is coupled to the connector. 6 and 7 are respectively a circuit of an alternative embodiment of the connector shown in FIG. 4 [Main component symbol description] 1 : Power converter U: AC connector 14: DC connector 21: Power conversion unit 24: AC connection 251 to 253: first to third output terminals 261 to 263: first to third input terminals 26': DC connector 33: insulating tube hole BD1: bridge rectifier D1: diode circle 11: power conversion unit 13: Dip switch 2: Power converter 22, 23: Power line 25: Connector 26~28, 36, 46: Connector 264, 265: Fourth, fifth output 31, 32: First and second metal Tube 34: metal sharp needle 36, 37: insulating material C1~C3 'CX1: capacitor DL1: light emitting diode M385163 DZ1: shunt regulator K: cathode terminal LI, LC1: inductor Q1: power switch

Rfl~RM: first to fourth resistors

Vac : AC voltage

Vdc : DC voltage (adjustable)

Vo, Vol, Vo2: Output voltage A: Anode terminal G: Gate terminal 0C1: Photocoupler Rl, R2: Resistor T1: Transformer

Vbus: DC voltage (no adjustment) Vfb: feedback voltage

Claims (1)

M385163 VI. Patent application scope: L A power converter with variable output voltage, comprising: - a source conversion unit for receiving - an external power supply and pressing, the switching power conversion unit includes a first; outputting the direct current - The two ends of the resistor are connected to the first - output '-: the first = resistor, = the two ends of the resistor are connected to the second output terminal and the $^ terminal = the metamorphic power conversion unit according to the third The voltage on the output terminal is adjusted to a plurality of connectors, wherein each connector has a one-four-four output terminal and a fifth output terminal, and each connector header includes: (2) resistance;: input to the fifth input _, the third resistor is divided into two ends of the input terminal and the two electrodes A 碴 冤 冤 冤 冤 冤 两 两 两 两 两 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一The first input end of the connector is lightly connected to the first output end, ^ is transferred to the pin two input (four), and the three inputs are mixed to the play end and the first money-output-transfer is different. The output voltage is not output when the connection wheel is connected to the switching power conversion unit. The output variable power converter described in the above item 1, wherein the power supply is supplied to the AC power supply of the AC dragon. Cut d::: ?2 The power converter with variable voltage is described, where the = electric prematurely includes - electromagnetic interference device, - rectification circuit crying circuit, _ dry organ light '^ The electric house is used to suppress conducted electromagnetic interference, and the rectifying circuit electromagnetic interference detector is used to replace the intersection M 13163 passing through the electromagnetic interference chopper with a non-adjusting DC voltage, and the DC to DC converter is lightly connected. And the rectifying circuit uses (10) the non-mechanical DC voltage to reduce the difficulty of the DC waste, the voltage feedback control circuit to the third output terminal and the DC to DC converter and the rib according to the third input The power on the & terminal turns the DC voltage. 4. The output voltage variable power converter of claim 3, wherein the DC to DC converter comprises a full bridge, half bridge, forward or flyback DC to DC conversion Device. The power supply converter with variable output voltage according to item 1 of the U + range includes a - a metal tube, a second metal tube, an insulating tube, a gold pin, and the third resistor. And/or the fourth resistor, the first genus, (four) one /~A one end of the heat exchanger, the third resistor is connected to the second metal tube, and the other end of the fourth resistor is connected to one end of the third resistor - the other end of the resistive state passes through a hole The other end of the stub is coupled to the first metal tube.