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Filter capable of inhibiting resonance

A technology for suppressing resonance and filters, applied in the field of filters, can solve the problems of hot electronic parts and circuit damage.

Inactive Publication Date: 2015-03-18
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the use of the filter, the input voltage becomes more stable and then supplied to the load, but the filter composed of capacitors and inductors, such as figure 1 , there will be a problem of resonance in use, that is, when the frequency of the voltage received by the filter is at the resonant frequency point of the filter, the gain of the voltage and current received by the load will increase instantaneously, such as figure 2 , its value often exceeds the original specification, which will make the electronic parts in the circuit hot, and long-term use may cause damage to the circuit

Method used

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  • Filter capable of inhibiting resonance
  • Filter capable of inhibiting resonance
  • Filter capable of inhibiting resonance

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:

[0013] Please refer to image 3 According to the present invention, the filter 10 capable of suppressing resonance is connected between a power supply 20 and a load 30 , and the filter 10 is used for filtering the voltage output by the power supply 20 to supply power to the load 30 .

[0014] The filter 10 includes inductors L1 , L2 , capacitors C1 , C2 , a switch 11 and a controller 12 . The first end of the inductor L1 is connected to the voltage output end of the power supply 20 , and the ground end of the power supply 20 is grounded. The first end of the inductor L1 is also grounded through the capacitor C1, the first end of the inductor L1 is connected to the first end of the switch 11, the second end of the switch 11 is connected to the first end of the inductor L2, The second end of the inductance L2 is connected to the second end of t...

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Abstract

Disclosed is a filter capable of inhibiting resonance. The filter comprises a first inductor, a second inductor, a first capacitor, a second capacitor, a switch and a controller. The first end of the first inductor is connected with the voltage output end of a power source, the first end of the first inductor is also grounded through the first capacitor, the first end of the first inductor is also connected with the first end of the second inductor through the first end and the second of the switch, the second end of the second inductor is connected with the second end of the first capacitor, the second end of the first inductor is connected with the control end of the switch through the controller, the second end of the first inductor is also grounded through the second capacitor, and the second end of the first inductor is also connected with a load. The filter provided by the invention changes the resonant frequency point of the filter by use of the second inductor when the resonance is generated so as to inhibit the resonance.

Description

technical field [0001] The invention relates to a filter capable of suppressing resonance. Background technique [0002] During the use of the filter, the input voltage becomes more stable and then supplied to the load, but the filter composed of capacitors and inductors, such as figure 1 , there will be a problem of resonance in use, that is, when the frequency of the voltage received by the filter is at the resonant frequency point of the filter, the gain of the voltage and current received by the load will increase instantaneously, such as figure 2 , its value often exceeds the original specification, which will make the electronic parts in the circuit hot, and long-term use may cause damage to the circuit. Contents of the invention [0003] In view of the above, it is necessary to provide a filter capable of suppressing resonance, so as to increase the reliability and safety of the circuit. [0004] A filter capable of suppressing resonance, connected between a powe...

Claims

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Application Information

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IPC IPC(8): H02M1/12H02M1/14
CPCH02M1/126H02M1/14
Inventor 许卜昇叶家铭
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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