Communication power source with multiple protection functions
A communication power supply and protection function technology, applied in the field of power supply modules, can solve the problems of transistors and integrated devices with poor resistance to electricity, thermal shock, user inconvenience, damage, etc., to reduce overall operating costs, reduce maintenance costs, and work efficiently reliability effect
Inactive Publication Date: 2013-06-19
XIAN HENGFEI ELECTRONICS TECH
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the complexity of the control circuit of the switching power supply, the ability of transistors and integrated devices to withstand electrical and thermal shocks is relatively poor
Moreover, the switching power supply is often disturbed by various external factors when it is working, resulting in voltage fluctuations, resulting in over-voltage and under-voltage conditions, which will inevitably lead to unstable output of the power supply.
If the communication equipment works in this environment for a long time, it will be damaged to a great extent, which will bring great inconvenience to users
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] see figure 1 and figure 2 As shown, the communication power supply with multiple protection functions includes: AC filter 1, bridge rectification filter circuit 2, soft start circuit 3, power conversion circuit 4, secondary output rectification filter circuit 5, PWM control circuit 6; PWM control circuit The circuit 6 is composed of a drive circuit 601, a sampling circuit 602, a comparison amplifier circuit 603, a pulse width modulation circuit 604, and a reference circuit 605. After the AC voltage is filtered by the AC filter 1, the output is electrically connected to the input end of the bridge rectifier filter circuit 2, Output through bridge rectification and filtering, the output end of the bridge rectification and filtering circuit 2 is electrically connected to the power conversion circuit 4 after the soft start circuit 3, and the controlled end of the power conversion circuit 4 is electrically connected to the control end of the PWM control circuit 6, The inpu...
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
Login to View More Abstract
The invention relates to a power source module, in particular to a communication power source with multiple protection functions. The communication power source with the multiple protection functions comprises alternating-current filtering wave 1, a bridge rectifier filter circuit 2, a soft start circuit 3, a power conversion circuit 4, a secondary output rectifier filter circuit 5 and a pulse width modulation (PWM) control circuit 6, wherein an alternating voltage is output after wave filtering through the alternating-current filtering wave 1 to be electrically connected with an input end of the bridge rectifier filter circuit 2 and then is output through bridge rectifier wave filtering. An output end of the bridge rectifier filter circuit 2 is electrically connected with the power conversion circuit 4 through the soft start circuit 3. A controlled end of the power conversion circuit 4 is electrically connected with a control end of the PWM control circuit 6. An input end of the PWM control circuit 6 is electrically connected with an output end of the secondary output rectifier filter circuit 5. An input overvoltage and an under-voltage protection circuit 12 are arranged between the input end of the bridge rectifier filter circuit 2 and the PWM control circuit 6.
Description
technical field [0001] The invention relates to a power supply module, in particular to a communication power supply with multiple protection functions. Background technique [0002] With the rapid development of science and technology, the relationship between the communication industry and people is getting closer and closer, and it is playing an increasingly important role in people's daily work and life. Any communication equipment is inseparable from a stable and reliable power supply as a power supply system, and switching power supplies are gradually being widely used in communication equipment due to their outstanding advantages such as wide voltage regulation range, small size, high efficiency, and convenient and flexible use. [0003] At the same time, many high-tech, such as high-frequency switching technology, soft switching technology, power factor correction technology, synchronous rectification technology, intelligent technology, surface mount technology and o...
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
Login to View More IPC IPC(8): H02M7/04H02M3/335H02M1/36H02M1/32H02H7/20H05K7/20
Inventor 王有利任炳旭
Owner XIAN HENGFEI ELECTRONICS TECH