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A multi-cycle sectional power-on circuit

A power-on, multi-cycle technology, used in electrical components, output power conversion devices, and AC power input into DC power output, etc., can solve problems affecting power grid capacity and product reliability, large current, etc. The effect of small impact on efficiency and small impact

Inactive Publication Date: 2018-12-11
黄奕奋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affect the grid capacity and product reliability
[0005] In order to solve this problem, at this stage, NTC resistors are mostly used in series, and the low-power ones are connected in series with ordinary wirewound resistors. The current limiting characteristics of the resistors are used to reduce the inrush current, and at the same time increase the current reserve capacity of the rectifier bridge and other related components. , to improve the reliability of the product, the current circuit of the NTC resistor in series, because it consumes a part of the voltage itself, will reduce the efficiency of the circuit, the larger the resistance, the better the improvement effect, and the greater the impact on the efficiency of the circuit; in order to take into account the efficiency problem , the improvement effect is limited, one-time access, if the capacitive load is large, there will be a problem of large current in the first 0.5 sine wave cycles after switching on

Method used

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  • A multi-cycle sectional power-on circuit
  • A multi-cycle sectional power-on circuit
  • A multi-cycle sectional power-on circuit

Examples

Experimental program
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Embodiment Construction

[0028] Specific embodiments of the present invention are described with reference to the above drawings.

[0029] Depend on figure 1 and figure 2 It can be seen that the present invention provides a multi-cycle segmented power supply circuit, including a secondary output part, a primary AC part, and a transformer T1, and the secondary output part is isolated from the AC part by a transformer T1 and an optocoupler. The primary AC part includes an input rectification module, a PFC module, a switch K1, a power switch conversion module, a control unit U1, a capacitive filter module, a phase detection module, and a capacitive circuit level detection module. The secondary output part includes rectification and filtering module, a secondary detection and control module, the input rectification module and the phase detection module are respectively connected to the mains input terminal, the input rectification module is also connected to the PFC module, and the PFC module is also co...

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PUM

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Abstract

The invention provides a multi-period sectional power-on circuit adopting a secondary output section, primary AC Part, transformer T1, the secondary output portion and the AC portion are isolated fromeach other by a transformer T1 and an optocoupler, the primary AC portion includes an input rectifier module, PFC module, switch K1, power switch conversion module, control unit U1, capacitive filtermodule, phase detection module, capacitive circuit level detection module, the secondary output section includes a rectifying and filtering module, The structure of the secondary detection and control module solves the technical problem in the prior art that the current of the first 0.5 sine wave cycle after the one-time access is turned on is large, and realizes the technical effect that the effect on circuit efficiency is small, the related shock is mainly distributed to a plurality of quarter sine waves, and the impact on the related original parts and equipment is smaller.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a multi-period segmented power supply circuit. Background technique [0002] If a circuit with a capacitive load is connected to the power grid at the peak and trough of the alternating current, it will have a large impact on the power grid and the switch at the moment when it is powered on. There is also a greater impact. The zero point switch refers to connecting the circuit or the capacitive part of the circuit at the zero potential point of the alternating current, which can reduce the impact on the power grid, switch, rectifier bridge and other related components when the circuit is connected, and improve the power grid capacity and product reliability. . [0003] Most of the power grids in the stage are AC power transmission. Electronic equipment generally converts AC power into pulsating DC power through diodes and rectifier bridges, and then reduces the ripple of puls...

Claims

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Application Information

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IPC IPC(8): H02M7/217
CPCH02M7/217
Inventor 黄奕奋
Owner 黄奕奋