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

Constant power output control circuit for communication power supply

A technology of communication power supply and constant power, which is applied in the field of constant power output control circuits, and can solve problems such as complex circuit changes

Inactive Publication Date: 2008-11-19
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, designing a switching power supply system with constant current output into a switching power supply system with constant power output requires more complicated circuit changes. Therefore, most communication power supplies currently use switching power supply systems with constant current output

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
  • Constant power output control circuit for communication power supply
  • Constant power output control circuit for communication power supply
  • Constant power output control circuit for communication power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0033] The circuit used in the third embodiment is the same as that in the second embodiment, but: in this embodiment, R1=270K ohms, R2=250K ohms, the reference voltage Vref=2.5V, and the output power of the power supply P=1000W. Then: K 1 =270 / 520=0.52,K 2 =250 / 520=0.48, the equation: 0.52Ui+0.48Uref=2.5 is established, Uref=5.21-1.08Ui, and the output current detection value Ui and output voltage setting value Uref are calibrated as in the first embodiment. See the table below for specific calculation data.

[0034] Table II:

[0035]

[0036] It can be seen from the above table that the maximum output power is 1004.9W; the minimum output power is 974.8W. Absolute error ≤ 30.1W; relative error less than or equal to ≤ 3%.

[0037] It can be seen from the above embodiments that by adopting the constant power output control circuit for communication power supply provided by the present invention, constant power output can be realized within the adjustment range of the ou...

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 belongs to the communication power supply field and relates to a constant power output control circuit for a communication power supply. The circuit is composed of an operational amplifier N1, resistors R1-R3, and a diode V1; a communication power supply output current detection value Ui and an output voltage set value Uref are connected to the in-phase input end of the operational amplifier N1 through the resistor R1 and the resistor R2; the reversed-phase input end of the operational amplifier N1 is connected with a reference voltage Vref; the cathode of the diode V1 is connected with the output of the operational amplifier N1, while the anode of the diode V1 is connected with the reference voltage Vref through the resistor R3; at the same time, the anode of the diode V1 is connected with the resistor R2; the operational amplifier N1 outputs a controlled output voltage set value Uref* through the anode of the diode V1. When the output of the power supply does not exceed the full power point, the circuit does not work; when the output of the power supply exceeds the full power point, the circuit lowers the output voltage to ensure constant power output of the communication power supply.

Description

Technical field [0001] The invention belongs to the field of communication power supply and relates to a constant power output control circuit for communication power supply. Background technique [0002] At present, the communication power supply mostly adopts the switching power supply system with constant current output. In the communication power system, in order to consider charging the discharged storage battery within a certain time, it is not enough for the rated output power of the power system to only consider the maximum load power of the telecommunication equipment. How much power is designed for the power system is usually considered based on three factors: the maximum load required, the ampere-hours of battery discharge after a power failure, and the charging time required to restore the battery capacity. If the reliability of n+1 redundancy is considered, generally 33% to 45% of the rated power should be reserved for recharging the discharged battery after a ...

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
IPC IPC(8): G05F1/66H02M7/04H02J7/00H04M19/00
Inventor 程庆生
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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