Unlock instant, AI-driven research and patent intelligence for your innovation.

Circuit for a power supply unit for generating a DC voltage

A power supply unit, DC voltage technology, applied in electrical components, DC power input into DC power output, AC power input into DC power output and other directions

Inactive Publication Date: 2014-01-08
SIEMENS AG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This recharging process can be synchronized with the frequency of the primary current and lead to saturation of the current transformer

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
  • Circuit for a power supply unit for generating a DC voltage
  • Circuit for a power supply unit for generating a DC voltage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] figure 1 A circuit according to the invention for a power supply unit for generating a DC voltage, for example for operating an electronic system, is shown. The power supply unit has a current transformer 1 , which conducts alternating current on the primary side. The primary current in the current transformer 1 is converted into a secondary current and supplied to a rectifier 2 in which the rectification of the secondary current takes place in a known manner. Arranged in series with the rectifier 2 are: on the one hand, a first blocking diode 3 and a charging capacitor 4 , which is charged by the rectified current; and, on the other hand, a grounded load 7 . Charging can be interrupted by means of an electronic switch 5 which is connected in parallel to the current transformer 1 and short-circuits it when switched on. The comparator 6 is used to control the electronic switch 5 . Furthermore, a circuit 9 for monitoring the voltage across the charging capacitor 4 is p...

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

A circuit is disclosed for a power supply unit for generating a DC voltage, the power supply unit having a current transformer, a rectifier, a series circuit including a first blocking diode and a charging capacitor, an electronic switch which is in parallel with the current transformer, a comparator, a voltage reference circuit for the comparator. In at least one embodiment, the circuit includes a circuit for monitoring the voltage across the charging capacitor. The comparator is used to control the electronic switch on the basis of the voltage across the charging capacitor in relation to the voltage which is generated by the voltage reference circuit and is applied to the comparator. In at least one embodiment, provision is made of a tap which is located between the rectifier and the first blocking diode and at which the circuit for monitoring the voltage across the charging capacitor is located. The circuit is in the form of an RC combination having a second blocking diode connected in series.

Description

technical field [0001] The invention relates to a circuit for a power supply unit for generating a direct current voltage, comprising: a current transformer; a rectifier; a series circuit composed of a first blocking diode and a charging capacitor; an electronic switch connected in parallel with the current transformer; a comparator; a reference voltage circuit for a comparator; and a circuit for monitoring a voltage across a charging capacitor, wherein the comparator is adapted to: be controlled depending on the voltage across the charging capacitor referenced by the voltage generated by the reference voltage circuit and applied to the comparator electronic switch. Background technique [0002] Such circuits for supply units belong to the prior art and are used, for example, in switching devices for supplying electronic overcurrent releases. The current transformer used here can be considered as a non-ideal power source. This means that a secondary current proportional to...

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): H02M7/08H02M3/156H02M1/36
CPCH02M3/1563H02M7/2176H02M2001/0087H02M1/0087
Inventor 安德烈亚斯·费舍尔
Owner SIEMENS AG
PatSnap Eureka logo

PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.

X (Twitter)LinkedInYouTubeSubstack

© 2026 PatSnap. All rights reserved. 

Terms of Service

 | 

Privacy policy

 | 

Modern Slavery Act Transparency Statement