Three-terminal voltage regulator for power supply
A technology of three-terminal voltage stabilizer and power supply, which is applied in the direction of instruments, electrical components, and adjustment of electric variables, etc. It can solve the problems of unsafe and high cost of three-terminal voltage stabilizer for power supply, and achieve the effect of low combination cost
Inactive Publication Date: 2011-06-22
SHENZHEN JIUZHOU ELECTRIC
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is that, aiming at the above-mentioned three-terminal voltage stabilizer of the power supply in the prior art, the cost is high or the output of the three-terminal voltage regulator of the power supply cannot be completely shut down, which causes the three-terminal voltage stabilizer of the power supply to be unsafe. A low-cost, guaranteed to completely shut down the output of the power three-terminal regulator; at the same time, it also has the function of anti-current three-terminal regulator
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[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] exist figure 1 In the detailed circuit diagram of the power supply three-terminal voltage regulator of the present invention, the power supply three-terminal voltage regulator includes a voltage input terminal, a voltage regulation terminal and a voltage output terminal, and the power supply three-terminal voltage regulator also includes a series diode combination 1 , the series diode combination 1 includes at least one diode, the anode of the series diode combination 1 is connected to the voltage output terminal, the cathode of the series diode combination 1 is connected to the load output ...
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The invention relates to a three-terminal voltage regulator for a power supply. The three-terminal voltage regulator for the power supply comprises a voltage input end, a voltage regulating end and a voltage output end, and also comprises a series-connected diode combination which makes the voltage output at a load output end 0V when the voltage at the voltage regulating end is 0V; the series-connected diode combination comprises at least one diode, wherein the anode of the series-connected diode combination is connected with the voltage output end; and the cathode of the series-connected diode combination is connected with the load output end. The three-terminal voltage regulator for the power supply adopts the series-connected diode combination which is formed by connecting a plurality of diodes in series in the same direction, has low cost, can ensure that the output of the three-terminal voltage regulator for the power supply is shut off completely, and simultaneously has a current anti-backflow function.
Description
technical field [0001] The present invention relates to a voltage stabilizer, and more particularly, to a power supply three-terminal voltage stabilizer capable of fully shutting down the output. Background technique [0002] The power three-terminal regulator is an electronic circuit, a commonly used voltage conversion device. It can transform the DC high voltage into less than the input voltage to V ref (The reference voltage of the power supply three-terminal regulator) Any voltage, its biggest feature is that the circuit is simple, and the design can be completed with only two resistors and capacitors, and it is widely used in electronic products. [0003] With people's requirements for energy saving of electronic products, electronic products are required to meet certain power consumption requirements when they are in standby mode, so when designing electronic products, turn off unnecessary power supply lines in standby mode, generally turn off the power supply of elec...
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Inventor 邓卫东
Owner SHENZHEN JIUZHOU ELECTRIC