Plasma type variable capacitor
Through the plasma variable capacitor structure, the high-dielectric constant dielectric and gas ionization technology is used to solve the problems of small capacitance value, large volume and easy wear of the existing variable capacitors, and the effect of large capacitance value adjustment at the uF level and simple structure is achieved. It is suitable for high voltage, high current and high power equipment.
Patent Information
- Application Number
- CN202422406327.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-07
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-07
AI Technical Summary
Existing variable capacitors have problems with capacitance values at nF level or less, large volumes and prone to wear.
The plasma variable capacitor structure is adopted, and the capacitance value is adjusted by ionizing the dielectric material with a high dielectric constant into a conductive plasma. It includes a first conductive electrode, a second conductive electrode, a dielectric and an excitation electrode. The ionization and recovery of the gas are controlled by an external power supply to achieve the adjustment of the capacitance value.
It realizes that the capacitance value is at the uF level or larger, the size is small and the structure is simple, and the capacitance value is fast. It is suitable for high voltage, high current and high power equipment.
Smart Images
Figure CN223260469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical components. Background Art
[0002] Air and solid variable capacitors are primarily used in radios, electronic instruments, high-frequency signal generators, and low-power communications equipment. Vacuum variable capacitors are primarily used in power systems, high-power communications systems, laboratories, and medical equipment, bringing numerous benefits to people's lives. However, these existing variable capacitors still suffer from capacitance values in the nanofarad range or less, large size, and easy wear. Utility Model Content
[0003] The purpose of the utility model is to provide a plasma variable capacitor, which is to overcome the problems of existing variable capacitors, such as capacitance values at nF level or less, large size and easy wear.
[0004] The utility model is a plasma variable capacitor, which comprises a first conductive electrode 1, a second conductive electrode 2, a first dielectric 3, a second dielectric 4, a first excitation electrode 5, a second excitation electrode 6, and a gas 7;
[0005] The right end face of the first conductive electrode 1 is tightly connected to the left end face of the first dielectric 3, and the left end face of the second conductive electrode 2 is tightly connected to the right end face of the second dielectric 4. A gap 7-1 is defined between the right end face of the first dielectric 3 and the left end face of the second dielectric 4. A gas 7 is disposed within the gap 7-1. A first excitation electrode 5 and a second excitation electrode 6 are disposed between the inner and outer edges or on the outer edges of the gap 7-1. When an external power source is connected between the first excitation electrode 5 and the second excitation electrode 6, the gas 7 within the gap 7-1 can be ionized into a conductive plasma. When the gas 7 within the gap 7-1 is ionized into a conductive plasma, the right end face of the first dielectric 3 and the left end face of the second dielectric 4 are electrically connected, and the capacitance value of the device reaches a maximum. When the first excitation electrode 5 and the second excitation electrode 6 are disconnected from the external power source, the gas 7 within the gap 7-1 returns to a gas dielectric, and the capacitance value of the device reaches a minimum.
[0006] The utility model discloses a plasma variable capacitor. Because a high dielectric constant dielectric, such as barium titanate, can be used, its capacitance value can be very large, reaching the uF level or even larger. Its capacitance value can be adjusted by the voltage of an external power supply. Its capacitance value adjustment speed is fast, its size is relatively small, and it also has the advantages of simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION
[0008] Specific implementation method 1: Combination Figure 1 This embodiment is described. This embodiment comprises a first conductive electrode 1, a second conductive electrode 2, a first dielectric 3, a second dielectric 4, a first excitation electrode 5, a second excitation electrode 6, and a gas 7. The right end surface of the first conductive electrode 1 is tightly connected to the left end surface of the first dielectric 3, the left end surface of the second conductive electrode 2 is tightly connected to the right end surface of the second dielectric 4, a gap 7-1 is provided between the right end surface of the first dielectric 3 and the left end surface of the second dielectric 4, and the gas 7 is provided in the gap 7-1. The first excitation electrode 5 and the second excitation electrode 6 are provided between the inner and outer edges or the outer edge of the gap 7-1. When an external power source is connected between the first excitation electrode 5 and the second excitation electrode 6, the gas 7 in the gap 7-1 can be ionized into a conductive plasma.
[0009] Working principle: When an external power source is connected between the first excitation electrode 5 and the second excitation electrode 6, the gas 7 in the gap 7-1 is ionized into a conductive plasma. When the gas 7 in the gap 7-1 is ionized into a conductive plasma, the right end face of the first dielectric 3 and the left end face of the second dielectric 4 are conductively connected. At this time, the capacitance value of the device reaches a maximum. When the first excitation electrode 5 and the second excitation electrode 6 are disconnected from the external power source, the gas 7 in the gap 7-1 returns to a gas dielectric. At this time, the capacitance value of the device reaches a minimum. The device can be used in high-voltage, high-current, and high-power voltage conversion equipment, such as a capacitor booster device. The first dielectric 3 and the second dielectric 4 can be made of copper calcium titanate. The entire device can be placed in an insulated sealed container.
[0010] Specific implementation method 2: Combination Figure 1 This embodiment differs from the first embodiment in that the first dielectric 3 and the second dielectric 4 are made of high-dielectric-constant dielectrics. The remaining components and connections are the same as those in the first embodiment. The purpose of this embodiment is to increase the capacitance.
[0011] Specific implementation method three: Combination Figure 1 This embodiment differs from Embodiments 1 and 2 in that the first dielectric 3 and the second dielectric 4 are made of barium titanate. The remaining components and connections are the same as those in Embodiment 1. This embodiment aims to increase its capacitance.
[0012] Specific implementation method four: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that the gas 7 is an inert gas. The other components and connection relationships are the same as those of the first embodiment.
[0013] Specific implementation method five: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first or fourth embodiment is that the gas 7 is neon. The other components and connection relationships are the same as those of the first embodiment.
[0014] Specific implementation method six: combination Figure 1 This embodiment is described. The difference between this embodiment and the first or fourth embodiment is that the gas 7 is helium. The other components and connection relationships are the same as those of the first embodiment.
[0015] Specific implementation method seven: combination Figure 1 This embodiment is described as follows: the difference between this embodiment and the first embodiment is that the pressure of the gas 7 is 40 kPa to 15 kPa. The other components and connection relationships are the same as those of the first embodiment.
[0016] Specific implementation method eight: combination Figure 1 This embodiment is described. The difference between this embodiment and the first or seventh embodiment is that the pressure of the gas 7 is 28 kPa. The other components and connection relationships are the same as those of the first embodiment.
[0017] Specific implementation method nine: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first or seventh embodiment is that the pressure of the gas 7 is 25 kPa. The other components and connection relationships are the same as those of the first embodiment.
[0018] Specific implementation method ten: Combination Figure 1 This embodiment differs from Embodiments 1 and 2 in that the first dielectric 3 and the second dielectric 4 are made of calcium copper titanate. The remaining components and connections are the same as those in Embodiment 1. This embodiment aims to increase its capacitance.
Claims
1. A plasma variable capacitor, characterized in that The invention comprises a first conductive electrode (1), a second conductive electrode (2), a first dielectric (3), a second dielectric (4), a first excitation electrode (5), a second excitation electrode (6), and a gas (7); the right end face of the first conductive electrode (1) is tightly connected to the left end face of the first dielectric (3), the left end face of the second conductive electrode (2) is tightly connected to the right end face of the second dielectric (4), a gap (7-1) is provided between the right end face of the first dielectric (3) and the left end face of the second dielectric (4), a gas (7) is provided in the gap (7-1), and the first excitation electrode (5) and the second excitation electrode (6) are provided between the inner side and the outer side edge or the outer side edge of the gap (7-1). When an external power supply is connected between the first excitation electrode (5) and the second excitation electrode (6), the gas (7) in the gap (7-1) can be ionized into a conductive plasma.
2. A plasma variable capacitor according to claim 1, characterized in that The first dielectric (3) and the second dielectric (4) are made of dielectrics with high dielectric constant.
3. A plasma variable capacitor according to claim 1 or 2, characterized in that The material of the first dielectric (3) and the second dielectric (4) is barium titanate.
4. The plasma variable capacitor according to claim 1, characterized in that Its gas (7) is an inert gas.
5. A plasma variable capacitor according to claim 1 or 4, characterized in that Its gas (7) is neon.
6. A plasma variable capacitor according to claim 1 or 4, characterized in that Its gas (7) is helium.
7. The plasma variable capacitor according to claim 1, characterized in that The pressure of its gas (7) is 40kPa to 15kPa.
8. A plasma variable capacitor according to claim 1 or 7, characterized in that The pressure of its gas (7) is 28 kPa.
9. A plasma variable capacitor according to claim 1 or 7, characterized in that The pressure of its gas (7) is 25 kPa.
10. A plasma variable capacitor according to claim 1 or 2, characterized in that The first dielectric (3) and the second dielectric (4) are made of copper calcium titanate.