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

Controlled Voltage Filter

A technology of capacitors and voltage sources, applied in the field of filter devices, can solve problems such as inconvenience

Active Publication Date: 2015-11-25
ROBERT BOSCH GMBH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interference signals are perceptible and inconvenient to the user, especially in loads that generate acoustic or optical output signals

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
  • Controlled Voltage Filter
  • Controlled Voltage Filter
  • Controlled Voltage Filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 A schematic diagram of an on-board electrical circuit 100 of a motor vehicle 105 is shown. Motor vehicle 105 may be, for example, a motor vehicle, in particular a sedan. To provide the supply voltage U, a battery 110 and a generator 120 are provided. During operation of motor vehicle 105 , generator 120 is driven by an internal combustion engine (not shown) and supplies a voltage with which battery 110 can be charged. The battery 110 is the preferred power source in the onboard electrical circuit 100 if the generator 120 is not driven by the internal combustion engine. The filter element 130 processes the supply voltage U and supplies the processed voltage to the audio device 140 . The audio device 140 generates an audio signal and provides the audio signal to the speaker 150 .

[0021] Control device 160 is connected to generator 120 , battery 110 and supply voltage U at generator 120 as well as the audio signal between audio system 140 and loudspeaker 150...

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 filtering apparatus has a switched capacitor that is set parallel to a load (140). A switched diode is coupled between power supply (U) and the capacitor. A switched variable resistor is set parallel to the diode. A control device (160) is provided for controlling the variable resistor as a function of an amount of the power supply voltage of battery (110), and reducing the resistance value of variable resistor if the amount of the power supply voltage is below a predetermined threshold. An independent claim is included for method for filtering spurious signals from power supply voltage.

Description

technical field [0001] The invention relates to a filter device and a method for filtering out interference signals from a supply voltage. Background technique [0002] Electrical loads generally require a supply voltage that is relatively free of interfering signals. Interference signals are perceptible and inconvenient to the user, especially in loads that generate acoustic or optical output signals. Some such devices include protection circuits that completely or partially shut down the device if the mains voltage does not meet predefined criteria. Such criteria may be overvoltage or undervoltage or interference signals in a predetermined frequency band. In complex environments, such as in motor vehicles, there is often a filter circuit between the electrical load and the supply voltage in order to process the supply voltage appropriately for the electrical load. [0003] Such a filter is disclosed in EP1121749B1, controlled in dependence on the power absorbed by the e...

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): H02M1/15
CPCH02M1/12
Inventor J·富尔曼
Owner ROBERT BOSCH GMBH
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