Direct-current voltage-stabilized power supply and voltage regulating method
A DC regulated power supply and voltage technology, applied in the direction of regulating electrical variables, control/regulating systems, instruments, etc., can solve problems such as high cost and complex results
Active Publication Date: 2018-01-09
ZHUHAI JIELI TECH
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Problems solved by technology
[0004] Based on this, it is necessary to provide a DC stabilized power supply and a voltage regulation method for the problems of complex results and high cost of the existing DC stabilized power supply circuit
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[0024] The content of the present invention will be further described in detail below in conjunction with preferred embodiments and accompanying drawings. Apparently, the embodiments described below are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.
[0025] figure 1 It is a schematic flow chart of the DC stabilized power supply of the present invention in one embodiment, as figure 1 As shown, the error amplifier U1, the adjustment element 10, the feedback resistor network module 20 and the voltage gear adjustment device 30, wherein the feedback resistor network module 20 includes a fir...
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The invention relates to a direct-current voltage-stabilized power supply and a voltage regulating method. The direct-current voltage-stabilized power supply comprises an error amplifier, a regulatingelement, a feedback resistance network module and a voltage tap position regulating device, wherein the feedback resistance network module comprises a first resistor and a second resistor; the positive input end of the error amplifier is connected with reference voltage, and the output end of the error amplifier is connected with the first end of the regulating element; the negative input end ofthe error amplifier is connected with the first end of the first resistor and the first end of the second resistor; the positive power supply end of the error amplifier and the second end of the regulating element are used for being connected with an external power supply; the third end of the regulating element is connected with the second end of the first resistor and is a voltage output end; the first end of the first resistor is connected with the first end of the second resistor, and the third end of the first resistor is connected with the voltage tap position regulating device; the second end of the second resistor is grounded; the voltage tap position regulating device controls and regulates the resistance of the first resistor and regulates the output voltage of the voltage outputend. The direct-current voltage-stabilized power supply is simple in structure and simple in output voltage regulation.
Description
technical field [0001] The invention relates to the technical field of integrated power supplies, in particular to a DC stabilized power supply and a voltage regulation method. Background technique [0002] With the rapid development of electronic technology, various electronic and electrical equipment have correspondingly increased performance requirements for voltage regulation, especially some chips will integrate DC regulated power supply to provide stable voltage support for the chip. For the DC regulated power supply integrated inside the chip, it is usually necessary to consider the power supply rejection ratio, transient response, load regulation, noise, electrostatic current adjustment, etc. However, in some cases, the chip does not have high requirements on the load regulation rate of the DC regulated power supply, but requires the voltage of the DC regulated power supply to be adjustable. [0003] At present, the adjustment of the voltage is usually achieved by u...
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IPC IPC(8): G05F1/56
Inventor 龙树生
Owner ZHUHAI JIELI TECH