CN105099394A - LC band-elimination filter system, LC band-elimination filter circuit, electronic circuit, power equipment - Google Patents
LC band-elimination filter system, LC band-elimination filter circuit, electronic circuit, power equipment Download PDFInfo
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- CN105099394A CN105099394A CN201510538462.3A CN201510538462A CN105099394A CN 105099394 A CN105099394 A CN 105099394A CN 201510538462 A CN201510538462 A CN 201510538462A CN 105099394 A CN105099394 A CN 105099394A
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Abstract
The invention relates to an LC band-elimination filter system, wherein the LC band-elimination filter system comprises a first input node (INT plus), a second input end (INT minus), a first output node (INT plus), a second output node (INT minus), a capacitor driving module, a controllable capacitor, an inductor driving module, a controllable inductor, a control module, a sensing module, a sampling point (P) and a power module. An LC band-elimination filter circuit is the embodied based on the LC band-elimination filter system. Power equipment is provided with the LC band-elimination filter circuit. An electronic circuit is provided with the LC band-elimination filter circuit. The LC band-elimination filter system of the invention is long in service life, low in construction cost, and excellent in isolation, and could be applied to a large-power weak power circuit, a power circuit and an ultra-high-voltage circuit.
Description
Technical field
The invention belongs to electricity field, particularly relate to LC bandreject filtering system, LC rejector circuit, electronic circuit, power equipment.
Background technology
The program-controlled filter with real-time adjustability of prior art all can only be used for signal filtering and cannot be used for the filtering of powerful circuit, cannot be used for the filtering of high-tension circuit, is worth improving.
Summary of the invention
For the problem described in technical solution background, the present invention proposes LC bandreject filtering system, LC rejector circuit, electronic circuit, power equipment.
The present invention has following technology contents.
1, LC bandreject filtering system, is characterized in that: comprise the first input node (INT+), the second input node (INT-), the first output node (INT+), the second output node (INT-), electric capacity driver module, controlled capacitance, inductance driver module, controlled inductance, control module, sensing module, sampled point (P), power module;
A function end of controlled capacitance is connected with the first input node (INT+), another function end of controlled capacitance with between the first output node (OUT+), there is electricity and be connected;
Two function end of controlled inductance are connected with two function end of controlled capacitance respectively;
The electricity had between power module with control module for electric energy transmitting is connected, and power module can provide electric energy to control module;
Sampled point (P) is positioned in the electrical pathways that the electricity between controlled capacitance with the first output node (OUT+) is connected;
Transducer can gather the information such as size of current voltage swing of the upper electricity of sampled point (P), and the electricity had between sensing module with control module for signal transmission is connected, and control module can obtain from sensing module the electrical information that sensing module collects;
Have electricity between control module with electric capacity driver module to be connected, electric capacity driver module is connected with the electricity had between controlled capacitance for controlling controlled capacitance property value, and control module by control capacitance driver module and then can control controlled capacitance;
Have electricity between control module with inductance driver module to be connected, inductance driver module is connected with the electricity had between controlled inductance for controlling controlled inductance property value, and control module can by controlling inductance driver module and then controlling controlled inductance.
2, the LC bandreject filtering system as described in technology contents 1, it is characterized in that: an input of power module is connected with the first output node (OUT+) and tie point is positioned in the electrical pathways between sampled point (P) and the first output node (OUT+), and another input of power module is connected with the second output node (OUT-).
3, a LC rejector circuit, is characterized in that: comprise the first input node (INT+), the second input node (INT-), the first output node (INT+), the second output node (INT-), electric capacity driver module, controlled capacitance, inductance driver module, controlled inductance, control module, sensing module, sampled point (P), power module;
Controlled capacitance feature is as follows: comprise insulating vessel (G11), conducting liquid (G31), buoyancy aid (G21), bottom electrode (G51), hold extremely rod (G50), insulating barrier (G51), solenoid (G41),
Insulating vessel (G11) has stable shape, and the profile of insulating vessel (G11) is cylindric, and the container of insulating vessel (G11) is cylindric, and change of shape is less likely to occur the cavity volume of insulating vessel (G11), and insulating vessel (G11) is airtight container,
Conducting liquid (G31) is housed in the cavity volume of insulating vessel (G11), and the volume of conducting liquid (G31) is less than the volume of insulating vessel (G11), and the volume of conducting liquid (G31) is greater than the half of the volume of insulating vessel (G11),
Solenoid (G41) is fixedly wrapped in the outside of insulating vessel (G11), and solenoid (G41) is positioned at below the stringcourse such as grade of insulating vessel (G11), the axis of solenoid (G41) and the axes coincide of insulating vessel (G11),
Holding extremely rod (G50) is cylindric electric conductor, holds extremely the rod axis of (G50) and the dead in line of insulating vessel (G11), and insulating barrier (G51) covers in appearance extremely excellent (G50) and forms capacitance electrode,
The averag density of buoyancy aid (G21) is less than the density of conducting liquid (G31), buoyancy aid (G21) has magnetic or paramagnetism, buoyancy aid (G21) device is in insulating vessel, buoyancy aid (G21) outer surface is insulation, the volume that the external volume of buoyancy aid (G21) is less than insulating vessel (G11) deducts the volume of conducting liquid (G31), the central authorities of buoyancy aid (G21) have through hole (G22), the diameter of the through hole (G22) of the central authorities of buoyancy aid (G21) is greater than the diameter of capacitance electrode, buoyancy aid (G21) floats on conducting liquid (G31) by its through hole (G22) string and can free floating in vertical direction on capacitance electrode,
Bottom electrode (G51) is positioned at bottom the cavity volume inner surface of insulating vessel (G11), and bottom electrode (G51) and conducting liquid (G31) always keep in touch, and have electricity and be connected between bottom electrode (G51) with controlled path Section Point (O-),
Be energized to solenoid (G41), solenoid (G41) produces magnetic field (G42), solenoid (G41) can attract to make to sink at buoyancy aid (G21) with buoyancy aid (G21), and the volume that arranges causing buoyancy aid (G21) to arrange conducting liquid (G31) increases, and then make the fluid level of conducting liquid (G31) rises and the contact area between capacitance electrode and conducting liquid can be increased, this all only belongs to controlled capacitance using branch as above-described all parts in the subordinate sentence of ending;
The feature of controlled inductance is as follows: comprise insulating vessel (G11), conducting liquid (G31), entity (G21), bottom electrode (G51), coiling rod (L10), inductance coil (L1), solenoid (G41),
Insulating vessel (G11) has stable shape, and the profile of insulating vessel (G11) is cylindric, and the container of insulating vessel (G11) is cylindric, and change of shape is less likely to occur the cavity volume of insulating vessel (G11), and insulating vessel (G11) is airtight container,
Conducting liquid (G31) is housed in the cavity volume of insulating vessel (G11), and the volume of conducting liquid (G31) is less than the volume of insulating vessel (G11), and the volume of conducting liquid (G31) is greater than the half of the volume of insulating vessel (G11),
Solenoid (G41) is fixedly wrapped in the outside of insulating vessel (G11), and solenoid (G41) is positioned at more than the stringcourse such as grade of insulating vessel (G11), the axis of solenoid (G41) and the axes coincide of insulating vessel (G11),
Coiling rod (L10) is cylindric and surface insulation, the axis of coiling rod (L10) and the dead in line of insulating vessel (G11), and inductance coil (L1) is wrapped on coiling rod (L10) and forms wire-wound inductor,
The averag density of entity (G21) is more than or equal to the density of conducting liquid (G31), entity (G21) has magnetic or paramagnetism, entity (G21) device is in insulating vessel, entity (G21) outer surface is insulation, the volume that the external volume of entity (G21) is less than insulating vessel (G11) deducts the volume of conducting liquid (G31), the central authorities of entity (G21) have through hole (G22), the diameter of the through hole (G22) of the central authorities of entity (G21) is greater than the diameter of wire-wound inductor, entity (G21) is suspended by its through hole (G22) string or to sink to the bottom in conducting liquid (G31) and can free floating in vertical direction on wire-wound inductor,
Bottom electrode (G51) is positioned at bottom the cavity volume inner surface of insulating vessel (G11), and bottom electrode (G51) and conducting liquid (G31) always keep in touch,
When coil is not energized, between conducting liquid (G31) and inductance coil (L1), there is conductive contact,
Be energized to solenoid (G41), solenoid (G41) produces magnetic field (G42), solenoid (G41) can attract to make with entity (G21) to rise at entity (G21), and cause the floating state of entity (G21) in conducting liquid (G31) to change into floating state, thus the volume that arranges making entity (G21) arrange conducting liquid (G31) reduces, and then the fluid level of conducting liquid (G31) is declined and the number of turns that inductance coil (L1) flooded by conducting liquid (G31) can be reduced, and increase the number of active coils of inductance coil (L1), in this subordinate sentence, above-described all parts all only belongs to controlled inductance,
Inductance driver module, be same driver module, its feature of this driver module is as follows: comprise the first resistance (R10), the first electric capacity (C10), metal-oxide-semiconductor, the second resistance (R11), the second electric capacity (C11), diode (D10),
First resistance (R10) is in parallel with the first electric capacity (C10), one end of first resistance (R10) is connected with the source electrode of metal-oxide-semiconductor, the end that first resistance (R10) is not connected with metal-oxide-semiconductor source electrode is the first input end of driver module, second resistance (R11) is in parallel with the second electric capacity (C11), one end of second resistance (R11) is connected with the drain electrode of metal-oxide-semiconductor, and the second resistance (R11) end be connected that do not drain with metal-oxide-semiconductor is connected with the positive pole of diode (D10);
Sensing module resistance characteristic is as follows: comprise the first sampling resistor (R20), the second sampling resistor (R21), first sampling resistor (20) is connected with the second sampling resistor (R21), first sampling resistor (20) is the signal output part of sensing module with the tie point of the second sampling resistor (R21), the end that first sampling resistor (R20) is not connected with the second sampling resistor (R21) is the sampling end of sensing module, and the end that the second sampling resistor (R21) is not connected with the first sampling resistor (R20) is the reference edge of sensing module;
The inductance coil (L1) of controlled inductance is connected with the first input node (INT+), the two ends of the solenoid (G41) of controlled inductance with the two ends of two extreme (D10) be connected, the bottom electrode (G51) of controlled inductance and the appearance of controlled capacitance extremely rod (G50) are connected;
The bottom electrode (G51) of controlled capacitance is connected with the first input node (INT+), and the appearance of controlled capacitance extremely rod (G50) is connected with sampled point (P), the two ends of the solenoid (G41) of controlled capacitance with the two ends of two extreme (D10) be connected;
Control module has at least 2 can the control signal output channel of output pwm signal, and control module has at least one sampled signal input;
Power module has first input end (IN+), the second input (IN+), the first output (IN+), the second output (IN-);
The input of inductance driver module is connected with first output (OT+) of power module, and the negative pole of the diode (D10) of inductance driver module is connected with second output (OT-) of power module;
The input of electric capacity driver module is connected with first output (OT+) of power module, and the negative pole of the diode (D10) of electric capacity driver module is connected with second output (OT-) of power module;
The grid of the metal-oxide-semiconductor of inductance driver module is connected with control module control signal output channel;
The grid of the metal-oxide-semiconductor of electric capacity driver module is connected with control module control signal output channel;
The reference edge of sensing module is connected with the first output node (OUT-);
Sampled point (P) is connected with the first output node (OUT+);
The sampling end of sensing module is connected on sampled point (P);
The signal output part of sensing module is connected with the sampled signal input of control module;
The electricity had between control module with power module for electric energy transmitting is connected, and power module can provide electric energy to control module.
4, the LC rejector circuit as described in technology contents 3, is characterized in that: the inside of the buoyancy aid (G21) of described controlled capacitance, controlled inductance has the cavity for regulating density.
5, the LC rejector circuit as described in technology contents 3, is characterized in that: the public electrode (G51) of described controlled capacitance, controlled inductance all uses the alloy containing tungsten to make.
6, the LC rejector circuit as described in technology contents 3, is characterized in that: described insulating vessel (G11) is made for glass.
7, the LC rejector circuit as described in technology contents 3, is characterized in that: described control module is single-chip microcomputer.
8, the LC rejector circuit as described in technology contents 3, is characterized in that: have filter capacitor (C20) between first output (OT+) of described power module, the second output (OY-).
9, an electronic circuit, is characterized in that: the LC rejector circuit described in the content that possesses skills 3.
10, a power equipment, is characterized in that: the LC rejector circuit described in the content that possesses skills 3.
Technology contents illustrates and beneficial effect.
Technology contents illustrates:
In the present invention, buoyancy aid (G21) can be single structure also can be composite construction, can be that one matter is formed, and also can be that many kinds of substance is formed; The shape of buoyancy aid (G21) is not limit, and those skilled in the art can according to the shape of the demand designed, designed reasonable of oneself, and this is skilled, know this area engineer of common practise can understand, therefore does not repeat.
The controlled capacitance of filter circuit of the present invention, controlled inductance, contact can not be burnt, long service life.
Filtering system of the present invention, may be used for high-power circuit, light current high-power circuit, and LC bandreject filtering system of the present invention needs to leave standstill use, and the present invention is not suitable with and mobile device, but is adapt to for the equipment of standing use.
Controllable inductor of the present invention, controlled capacitance adopt the floating state of electromagnetic force, Magnetic Control buoyancy aid/entity thus control the discharge opeing volume of buoyancy aid thus control liquid level thus control inductance, capacitance to be that those skilled in the art are difficult to expect.
Control module of the present invention can adjust controllable inductor, controlled capacitance according to the data of sensing module feedback and then change filtering characteristic, therefore this LC filter has real-time monitoring, can adjust according to the actual interference situation of circuit, also can change according to the actual requirement of user, user or designer can to the real-time control of control module programming realization to whole filter circuit.
Life-span of the present invention is long, cheap, isolation is good, can apply to high-power circuit such as light current power circuit, power circuit, ultrahigh voltage power circuit.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of embodiment 1.
Accompanying drawing 2 is the schematic diagram of embodiment 2.
Accompanying drawing 3 is the schematic diagram of embodiment 3.
concrete embodiment
Below in conjunction with embodiment, the present invention will be described.
Embodiment 1, as shown in Figure 1, LC bandreject filtering system, is characterized in that: comprise the first input node INT+, the second input node INT-, the first output node INT+, the second output node INT-, electric capacity driver module, controlled capacitance, inductance driver module, controlled inductance, control module, sensing module, sampled point P, power module;
A function end of controlled inductance is connected with the first input node INT+, and another function end of controlled inductance is connected with controlled capacitance, the end that controlled capacitance is not connected with controlled inductance with between the first output node OUT+, there is electricity and be connected;
The electricity had between power module with control module for electric energy transmitting is connected, and power module can provide electric energy to control module;
In the electrical pathways that the electricity of sampled point P between controlled capacitance with the first output node OUT+ is connected;
Transducer can gather the information such as size of current voltage swing of electricity on sampled point P, and the electricity had between sensing module with control module for signal transmission is connected, and control module can obtain from sensing module the electrical information that sensing module collects;
Have electricity between control module with electric capacity driver module to be connected, electric capacity driver module is connected with the electricity had between controlled capacitance for controlling controlled capacitance property value, and control module by control capacitance driver module and then can control controlled capacitance;
Have electricity between control module with inductance driver module to be connected, inductance driver module is connected with the electricity had between controlled inductance for controlling controlled inductance property value, and control module can by controlling inductance driver module and then controlling controlled inductance.
Embodiment 2, as shown in Figure 2, based on the LC bandreject filtering system described in embodiment 1, it is characterized in that: an input of power module is connected with the first output node OUT+ and in the electrical pathways of tie point between sampled point P and the first output node OUT+, another input of power module is connected with the second output node OUT-.
Embodiment 3, as shown in Figure 3, a kind of LC rejector circuit, is characterized in that: comprise the first input node INT+, the second input node INT-, the first output node INT+, the second output node INT-, electric capacity driver module, controlled capacitance, inductance driver module, controlled inductance, control module, sensing module, sampled point P, power module;
Controlled capacitance feature is as follows: comprise insulating vessel G11, conducting liquid G31, buoyancy aid G21, bottom electrode G51, hold extremely excellent G50, insulating barrier G51, solenoid G41,
Insulating vessel G11 has stable shape, and the profile of insulating vessel G11 is cylindric, and the container of insulating vessel G11 is cylindric, and change of shape is less likely to occur the cavity volume of insulating vessel G11, and insulating vessel G11 is airtight container,
Conducting liquid G31 is housed in the cavity volume of insulating vessel G11, and the volume of conducting liquid G31 is less than the volume of insulating vessel G11, and the volume of conducting liquid G31 is greater than the half of the volume of insulating vessel G11,
Solenoid G41 is fixedly wrapped in the outside of insulating vessel G11, and solenoid G41 is positioned at below the stringcourse such as grade of insulating vessel G11, the axis of solenoid G41 and the axes coincide of insulating vessel G11,
Holding extremely excellent G50 is cylindric electric conductor, holds the axis of extremely excellent G50 and the dead in line of insulating vessel G11, and insulating barrier G51 covers on the extremely excellent G50 of appearance and forms capacitance electrode,
The averag density of buoyancy aid G21 is less than the density of conducting liquid G31, buoyancy aid G21 has magnetic or paramagnetism, buoyancy aid G21 device is in insulating vessel, buoyancy aid G21 outer surface is insulation, the volume that the external volume of buoyancy aid G21 is less than insulating vessel G11 deducts the volume of conducting liquid G31, the central authorities of buoyancy aid G21 have through hole G22, the diameter of the through hole G22 of the central authorities of buoyancy aid G21 is greater than the diameter of capacitance electrode, buoyancy aid G21 floats on conducting liquid G31 by its through hole G22 string and can free floating in vertical direction on capacitance electrode
Bottom electrode G51 is positioned at bottom the cavity volume inner surface of insulating vessel G11, and bottom electrode G51 and conducting liquid G31 always keeps in touch, and has electricity and be connected between bottom electrode G51 with controlled path Section Point O-,
Be energized to solenoid G41, solenoid G41 produces magnetic field G42, solenoid G41 can attract to make to sink at buoyancy aid G21 with buoyancy aid G21, and the volume that arranges causing buoyancy aid G21 to arrange conducting liquid G31 increases, and then make the fluid level of conducting liquid G31 rises and the contact area between capacitance electrode and conducting liquid can be increased, this all only belongs to controlled capacitance using branch as above-described all parts in the subordinate sentence of ending;
The feature of controlled inductance is as follows: comprise insulating vessel G11, conducting liquid G31, entity G21, bottom electrode G51, coiling rod L10, inductance coil L1, solenoid G41,
Insulating vessel G11 has stable shape, and the profile of insulating vessel G11 is cylindric, and the container of insulating vessel G11 is cylindric, and change of shape is less likely to occur the cavity volume of insulating vessel G11, and insulating vessel G11 is airtight container,
Conducting liquid G31 is housed in the cavity volume of insulating vessel G11, and the volume of conducting liquid G31 is less than the volume of insulating vessel G11, and the volume of conducting liquid G31 is greater than the half of the volume of insulating vessel G11,
Solenoid G41 is fixedly wrapped in the outside of insulating vessel G11, and solenoid G41 is positioned at more than the stringcourse such as grade of insulating vessel G11, the axis of solenoid G41 and the axes coincide of insulating vessel G11,
Coiling rod L10 is cylindric and surface insulation, the coiling rod axis of L10 and the dead in line of insulating vessel G11, and inductance coil L1 is wrapped on coiling rod L10 and forms wire-wound inductor,
The averag density of entity G21 is more than or equal to the density of conducting liquid G31, entity G21 has magnetic or paramagnetism, entity G21 device is in insulating vessel, entity G21 outer surface is insulation, the volume that the external volume of entity G21 is less than insulating vessel G11 deducts the volume of conducting liquid G31, the central authorities of entity G21 have through hole G22, the diameter of the through hole G22 of the central authorities of entity G21 is greater than the diameter of wire-wound inductor, entity G21 is gone here and there by its through hole G22 and to suspend on wire-wound inductor or sink to the bottom in conducting liquid G31 and can free floating in vertical direction
Bottom electrode G51 is positioned at bottom the cavity volume inner surface of insulating vessel G11, and bottom electrode G51 and conducting liquid G31 always keeps in touch,
When coil is not energized, between conducting liquid G31 and inductance coil L1, there is conductive contact,
Be energized to solenoid G41, solenoid G41 produces magnetic field G42, solenoid G41 can attract to make with entity G21 to rise at entity G21, and cause the floating state of entity G21 in conducting liquid G31 to change into floating state, thus the volume that arranges making entity G21 arrange conducting liquid G31 reduces, and then the fluid level of conducting liquid G31 is declined and the number of turns that inductance coil L1 flooded by conducting liquid G31 can be reduced, and increasing the number of active coils of inductance coil L1, in this subordinate sentence, above-described all parts all only belongs to controlled inductance;
Inductance driver module, be same driver module, its feature of this driver module is as follows: comprise the first resistance (R10), the first electric capacity C10, metal-oxide-semiconductor, the second resistance R11, the second electric capacity C11, diode D10,
First resistance R10 is in parallel with the first electric capacity C10, one end of first resistance R10 is connected with the source electrode of metal-oxide-semiconductor, the end that first resistance R10 is not connected with metal-oxide-semiconductor source electrode is the first input end of driver module, second resistance R11 is in parallel with the second electric capacity C11, one end of second resistance R11 is connected with the drain electrode of metal-oxide-semiconductor, and the second resistance R11 end be connected that do not drain with metal-oxide-semiconductor is connected with the positive pole of diode D10;
Sensing module resistance characteristic is as follows: comprise the first sampling resistor R20, the second sampling resistor (R21), first sampling resistor 20 is connected with the second sampling resistor R21, the tie point of the first sampling resistor 20 and the second sampling resistor R21 is the signal output part of sensing module, the end that first sampling resistor R20 is not connected with the second sampling resistor R21 is the sampling end of sensing module, and the end that the second sampling resistor R21 is not connected with the first sampling resistor R20 is the reference edge of sensing module;
The bottom electrode G51 of controlled inductance with the extremely excellent G50 of appearance be connected;
The inductance coil L1 of controlled inductance is connected with the first input node INT+, the two ends of the solenoid G41 of controlled inductance with the two ends of two poles D 10 be connected, the bottom electrode G51 of controlled inductance and the bottom electrode G51 of controlled capacitance;
The extremely excellent G50 of appearance of controlled capacitance is connected with sampled point P, the two ends of the solenoid G41 of controlled capacitance with the two ends of two poles D 10 be connected;
Control module has at least 2 can the control signal output channel of output pwm signal, and control module has at least one sampled signal input;
Power module has first input end IN+, the second input IN+, the first output IN+, the second output IN-;
The input of inductance driver module is connected with the first output OT+ of power module, and the negative pole of the diode D10 of inductance driver module is connected with the second output OT-of power module;
The input of electric capacity driver module is connected with the first output OT+ of power module, and the negative pole of the diode D10 of electric capacity driver module is connected with the second output OT-of power module;
The grid of the metal-oxide-semiconductor of inductance driver module is connected with control module control signal output channel;
The grid of the metal-oxide-semiconductor of electric capacity driver module is connected with control module control signal output channel;
The reference edge of sensing module is connected with the first output node OUT-;
Sampled point P is connected with the first output node OUT+;
The sampling end of sensing module is connected on sampled point P;
The signal output part of sensing module is connected with the sampled signal input of control module;
The electricity had between control module with power module for electric energy transmitting is connected, and power module can provide electric energy to control module.
The inside of the buoyancy aid G21 of described controlled capacitance, controlled inductance has the cavity for regulating density.
The public electrode G51 of described controlled capacitance, controlled inductance all uses the alloy containing tungsten to make.
Described insulating vessel G11 is that glass is made.
Described control module is single-chip microcomputer.
Described power module between the first output OT+, the second output OY-, there is filter capacitor C20.
The pwm signal that inductance driver module is exported by single-chip microcomputer PIC12F510 controls, and then controls the induction reactance value of controlled inductance.
The pwm signal that electric capacity driver module is exported by single-chip microcomputer PIC12F510 controls, and then controls the capacitance of controlled capacitance.
Embodiment 4, a kind of electronic circuit, is characterized in that: have the LC rejector circuit described in embodiment 3.
Embodiment 5, a kind of power equipment, is characterized in that: have the LC rejector circuit described in embodiment 3.
Claims (10)
1.LC bandpass filtering system, is characterized in that: comprise the first input node (INT+), the second input node (INT-), the first output node (INT+), the second output node (INT-), electric capacity driver module, controlled capacitance, inductance driver module, controlled inductance, control module, sensing module, sampled point (P), power module;
A function end of controlled inductance is connected with the first input node (INT+), and another function end of controlled inductance is connected with controlled capacitance, the end that controlled capacitance is not connected with controlled inductance with between the first output node (OUT+), there is electricity and be connected;
The electricity had between power module with control module for electric energy transmitting is connected, and power module can provide electric energy to control module;
Sampled point (P) is positioned in the electrical pathways that the electricity between controlled capacitance with the first output node (OUT+) is connected;
Transducer can gather the information such as size of current voltage swing of the upper electricity of sampled point (P), and the electricity had between sensing module with control module for signal transmission is connected, and control module can obtain from sensing module the electrical information that sensing module collects;
Have electricity between control module with electric capacity driver module to be connected, electric capacity driver module is connected with the electricity had between controlled capacitance for controlling controlled capacitance property value, and control module by control capacitance driver module and then can control controlled capacitance;
Have electricity between control module with inductance driver module to be connected, inductance driver module is connected with the electricity had between controlled inductance for controlling controlled inductance property value, and control module can by controlling inductance driver module and then controlling controlled inductance.
2. LC bandpass filtering system as claimed in claim 1, it is characterized in that: an input of power module is connected with the first output node (OUT+) and tie point is positioned in the electrical pathways between sampled point (P) and the first output node (OUT+), and another input of power module is connected with the second output node (OUT-).
3. a LC bandwidth-limited circuit, is characterized in that: comprise the first input node (INT+), the second input node (INT-), the first output node (INT+), the second output node (INT-), electric capacity driver module, controlled capacitance, inductance driver module, controlled inductance, control module, sensing module, sampled point (P), power module;
Controlled capacitance feature is as follows: comprise insulating vessel (G11), conducting liquid (G31), buoyancy aid (G21), bottom electrode (G51), hold extremely rod (G50), insulating barrier (G51), solenoid (G41),
Insulating vessel (G11) has stable shape, and the profile of insulating vessel (G11) is cylindric, and the container of insulating vessel (G11) is cylindric, and change of shape is less likely to occur the cavity volume of insulating vessel (G11), and insulating vessel (G11) is airtight container,
Conducting liquid (G31) is housed in the cavity volume of insulating vessel (G11), and the volume of conducting liquid (G31) is less than the volume of insulating vessel (G11), and the volume of conducting liquid (G31) is greater than the half of the volume of insulating vessel (G11),
Solenoid (G41) is fixedly wrapped in the outside of insulating vessel (G11), and solenoid (G41) is positioned at below the stringcourse such as grade of insulating vessel (G11), the axis of solenoid (G41) and the axes coincide of insulating vessel (G11),
Holding extremely rod (G50) is cylindric electric conductor, holds extremely the rod axis of (G50) and the dead in line of insulating vessel (G11), and insulating barrier (G51) covers in appearance extremely excellent (G50) and forms capacitance electrode,
The averag density of buoyancy aid (G21) is less than the density of conducting liquid (G31), buoyancy aid (G21) has magnetic or paramagnetism, buoyancy aid (G21) device is in insulating vessel, buoyancy aid (G21) outer surface is insulation, the volume that the external volume of buoyancy aid (G21) is less than insulating vessel (G11) deducts the volume of conducting liquid (G31), the central authorities of buoyancy aid (G21) have through hole (G22), the diameter of the through hole (G22) of the central authorities of buoyancy aid (G21) is greater than the diameter of capacitance electrode, buoyancy aid (G21) floats on conducting liquid (G31) by its through hole (G22) string and can free floating in vertical direction on capacitance electrode,
Bottom electrode (G51) is positioned at bottom the cavity volume inner surface of insulating vessel (G11), and bottom electrode (G51) and conducting liquid (G31) always keep in touch, and have electricity and be connected between bottom electrode (G51) with controlled path Section Point (O-),
Be energized to solenoid (G41), solenoid (G41) produces magnetic field (G42), solenoid (G41) can attract to make to sink at buoyancy aid (G21) with buoyancy aid (G21), and the volume that arranges causing buoyancy aid (G21) to arrange conducting liquid (G31) increases, and then make the fluid level of conducting liquid (G31) rises and the contact area between capacitance electrode and conducting liquid can be increased, this branch all only belongs to controlled capacitance as above-described all parts in the subordinate sentence of ending;
The feature of controlled inductance is as follows: comprise insulating vessel (G11), conducting liquid (G31), entity (G21), bottom electrode (G51), coiling rod (L10), inductance coil (L1), solenoid (G41),
Insulating vessel (G11) has stable shape, and the profile of insulating vessel (G11) is cylindric, and the container of insulating vessel (G11) is cylindric, and change of shape is less likely to occur the cavity volume of insulating vessel (G11), and insulating vessel (G11) is airtight container,
Conducting liquid (G31) is housed in the cavity volume of insulating vessel (G11), and the volume of conducting liquid (G31) is less than the volume of insulating vessel (G11), and the volume of conducting liquid (G31) is greater than the half of the volume of insulating vessel (G11),
Solenoid (G41) is fixedly wrapped in the outside of insulating vessel (G11), and solenoid (G41) is positioned at more than the stringcourse such as grade of insulating vessel (G11), the axis of solenoid (G41) and the axes coincide of insulating vessel (G11),
Coiling rod (L10) is cylindric and surface insulation, the axis of coiling rod (L10) and the dead in line of insulating vessel (G11), and inductance coil (L1) is wrapped on coiling rod (L10) and forms wire-wound inductor,
The averag density of entity (G21) is more than or equal to the density of conducting liquid (G31), entity (G21) has magnetic or paramagnetism, entity (G21) device is in insulating vessel, entity (G21) outer surface is insulation, the volume that the external volume of entity (G21) is less than insulating vessel (G11) deducts the volume of conducting liquid (G31), the central authorities of entity (G21) have through hole (G22), the diameter of the through hole (G22) of the central authorities of entity (G21) is greater than the diameter of wire-wound inductor, entity (G21) is suspended by its through hole (G22) string or to sink to the bottom in conducting liquid (G31) and can free floating in vertical direction on wire-wound inductor,
Bottom electrode (G51) is positioned at bottom the cavity volume inner surface of insulating vessel (G11), and bottom electrode (G51) and conducting liquid (G31) always keep in touch,
When coil is not energized, between conducting liquid (G31) and inductance coil (L1), there is conductive contact,
Be energized to solenoid (G41), solenoid (G41) produces magnetic field (G42), solenoid (G41) can attract to make with entity (G21) to rise at entity (G21), and cause the floating state of entity (G21) in conducting liquid (G31) to change into floating state, thus the volume that arranges making entity (G21) arrange conducting liquid (G31) reduces, and then the fluid level of conducting liquid (G31) is declined and the number of turns that inductance coil (L1) flooded by conducting liquid (G31) can be reduced, and increase the number of active coils of inductance coil (L1), in this subordinate sentence, above-described all parts all only belongs to controlled inductance,
Inductance driver module, be same driver module, its feature of this driver module is as follows: comprise the first resistance (R10), the first electric capacity (C10), metal-oxide-semiconductor, the second resistance (R11), the second electric capacity (C11), diode (D10),
First resistance (R10) is in parallel with the first electric capacity (C10), one end of first resistance (R10) is connected with the source electrode of metal-oxide-semiconductor, the end that first resistance (R10) is not connected with metal-oxide-semiconductor source electrode is the first input end of driver module, second resistance (R11) is in parallel with the second electric capacity (C11), one end of second resistance (R11) is connected with the drain electrode of metal-oxide-semiconductor, and the second resistance (R11) end be connected that do not drain with metal-oxide-semiconductor is connected with the positive pole of diode (D10);
Sensing module resistance characteristic is as follows: comprise the first sampling resistor (R20), the second sampling resistor (R21), first sampling resistor (20) is connected with the second sampling resistor (R21), first sampling resistor (20) is the signal output part of sensing module with the tie point of the second sampling resistor (R21), the end that first sampling resistor (R20) is not connected with the second sampling resistor (R21) is the sampling end of sensing module, and the end that the second sampling resistor (R21) is not connected with the first sampling resistor (R20) is the reference edge of sensing module;
The bottom electrode (G51) of controlled inductance with appearance extremely rod (G50) be connected;
The inductance coil (L1) of controlled inductance is connected with the first input node (INT+), the two ends of the solenoid (G41) of controlled inductance with the two ends of two extreme (D10) be connected, the bottom electrode (G51) of controlled inductance and the bottom electrode (G51) of controlled capacitance;
The appearance of controlled capacitance extremely rod (G50) is connected with sampled point (P), the two ends of the solenoid (G41) of controlled capacitance with the two ends of two extreme (D10) be connected;
Control module has at least 2 can the control signal output channel of output pwm signal, and control module has at least one sampled signal input;
Power module has first input end (IN+), the second input (IN+), the first output (IN+), the second output (IN-);
The input of inductance driver module is connected with first output (OT+) of power module, and the negative pole of the diode (D10) of inductance driver module is connected with second output (OT-) of power module;
The input of electric capacity driver module is connected with first output (OT+) of power module, and the negative pole of the diode (D10) of electric capacity driver module is connected with second output (OT-) of power module;
The grid of the metal-oxide-semiconductor of inductance driver module is connected with control module control signal output channel;
The grid of the metal-oxide-semiconductor of electric capacity driver module is connected with control module control signal output channel;
The reference edge of sensing module is connected with the first output node (OUT-);
Sampled point (P) is connected with the first output node (OUT+);
The sampling end of sensing module is connected on sampled point (P);
The signal output part of sensing module is connected with the sampled signal input of control module;
The electricity had between control module with power module for electric energy transmitting is connected, and power module can provide electric energy to control module.
4. LC bandwidth-limited circuit as claimed in claim 3, is characterized in that: the inside of the buoyancy aid (G21) of described controlled capacitance, controlled inductance has the cavity for regulating density.
5. LC bandwidth-limited circuit as claimed in claim 3, is characterized in that: the public electrode (G51) of described controlled capacitance, controlled inductance all uses the alloy containing tungsten to make.
6. LC bandwidth-limited circuit as claimed in claim 3, is characterized in that: described insulating vessel (G11) is made for glass.
7. LC bandwidth-limited circuit as claimed in claim 3, is characterized in that: described control module is single-chip microcomputer.
8. LC bandwidth-limited circuit as claimed in claim 3, is characterized in that: have filter capacitor (C20) between first output (OT+) of described power module, the second output (OY-).
9. an electronic circuit, is characterized in that: have LC bandwidth-limited circuit according to claim 3.
10. a power equipment, is characterized in that: have LC bandwidth-limited circuit according to claim 3.
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| CN201510538462.3A CN105099394B (en) | 2015-08-28 | 2015-08-28 | LC bandreject filterings system, LC rejector circuits, electronic circuit, power equipment |
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| CN1901145A (en) * | 2005-07-20 | 2007-01-24 | 联华电子股份有限公司 | Variable capacitor structure and its producing method |
| US20100253442A1 (en) * | 2009-04-02 | 2010-10-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Tank Tuning for Band Pass Filter Used in Radio Communications |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901145A (en) * | 2005-07-20 | 2007-01-24 | 联华电子股份有限公司 | Variable capacitor structure and its producing method |
| US20100253442A1 (en) * | 2009-04-02 | 2010-10-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Tank Tuning for Band Pass Filter Used in Radio Communications |
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