Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A device for suppressing inrush current

An inrush current and resistance technology, applied in the field of circuits, can solve problems such as excessive inrush current thyristor dimmers, and achieve the effects of reducing the loss of the first resistance, suppressing the inrush current, and suppressing the secondary inrush current.

Active Publication Date: 2018-02-27
INVENTRONICS HANGZHOU
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a device for suppressing inrush current, which can solve the problem of light flicker caused by abnormal shutdown of the thyristor dimmer due to excessive inrush current when the thyristor dimmer is dimmed with a capacitive load

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A device for suppressing inrush current
  • A device for suppressing inrush current
  • A device for suppressing inrush current

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of 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.

[0049] like figure 1 As shown, the present invention provides a device for suppressing inrush current, including a thyristor dimmer 100, a rectifier circuit 200 connected to the output end of the thyristor dimmer, and a rectifier circuit connected to the output end of the rectifier circuit capacitive load 300, also includes:

[0050] a first resistor 400 connected in series between the rectifier circuit 200 and the capacitive load 300;

[0051] A switch tube...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a device for suppressing inrush current. The device includes a thyristor dimmer, a rectifier circuit, a capacitive load, a first resistor, a switch tube, a control unit and an adjustment unit. The switching tube is disconnected at all times, and within the conduction phase angle after the thyristor dimmer is turned on, the switching tube is closed to short-circuit the resistance, and the conduction speed of the switching tube is reduced by adjusting the unit, so the present invention It not only suppresses the surge current brought by the thyristor dimmer when dimming with a capacitive load and the secondary surge current caused by the conduction of the switch tube to the capacitive load, but also minimizes the secondary surge current while suppressing the surge current. A resistive loss.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a device for suppressing surge current. Background technique [0002] In traditional applications, thyristor dimmers are generally used for dimming incandescent lamps. The incandescent lamp is equivalent to a resistive load, and the dimming effect is good when the two are used together. When the thyristor dimmer has a capacitive load, when the sudden change in input voltage acts on the capacitive load, a large inrush current will be brought, and the impulse current oscillates between the thyristor dimmer and the capacitive load. When the impulse current oscillates below the holding current of the thyristor dimmer, it will cause the thyristor dimmer to shut down abnormally and cause the light to flicker. [0003] Therefore, a device is needed now to solve the problem of light flicker caused by abnormal shutdown of the thyristor dimmer due to excessive inrush current when the thy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H02H9/02
Inventor 罗世伟徐雁
Owner INVENTRONICS HANGZHOU
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com