CN2508357Y - Improved structure of conductive film fixed resistor - Google Patents
Improved structure of conductive film fixed resistor Download PDFInfo
- Publication number
- CN2508357Y CN2508357Y CN 01270143 CN01270143U CN2508357Y CN 2508357 Y CN2508357 Y CN 2508357Y CN 01270143 CN01270143 CN 01270143 CN 01270143 U CN01270143 U CN 01270143U CN 2508357 Y CN2508357 Y CN 2508357Y
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- rod body
- rod
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- resistor
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Abstract
The utility model provides an improved structure for a conducting membrane fixed resistor which is provided with an electrical insulation rod body. The electrical insulation rod body is provided with a first end, a second end, and a rod body part, a conducting membrane is applied to the electrical insulation rod body, and a metal cap is respectively pressed at the first end and the second end of the electrical insulation rod body. The utility model is characterized in that the conducting membrane on the rod body part of the electrical insulation rod body is provided with a plurality of slots through cutting, and the slots are arranged in the spiral shape to surround the rod body part. The utility model can be used for the expander of a sound, the crossover of a sound box, an active type loudspeaker, and a motor drive or a motor frequency converter; the amplifier or the attenuator of a wired or wireless television; a black and white or color display; the commutating type power sourcing equipment of a computer and the uninterruptible power supply equipment system of the computer; circuit components of a wired or wireless communication equipment, the high frequency heater of an induction cooker pan, etc.
Description
Technical field
The utility model relates to a kind of resistor, particularly a kind of structure-improved of conducting film fixed resistor.
Background technology
The equipment such as sound equipment, computer, television set and communication of general family expenses or commercial usefulness, the phenomenon that noise is in use arranged, to be known spiral continuous channel cutting type fixed resistor heal when high in frequency main cause, is easy to generate the impedance that comprises induction reactance and capacitive reactance, and resistance is changed.
See also Fig. 1 and Fig. 2, known continuous helical groove groove cutting type fixed resistor, be the conducting film resistor of handling, through cutting machine the conducting film ceramic rod is bestowed the cutting of continuous helical groove, conducting film after cutting is just as wound wire on the iron stamen, when applying alternating current or pulse direct current, can produce inductance.
Itself can become electric current again the magnetic field that this inductance produced, or part or wire rod and produce noise near on the sensor circuit, and this noise some can cause the noise on the audio frequency when being exaggerated, disturb the sense of hearing, some noise can intersperse among with the kenel of radio frequency (RF) in the air, or, cause Electromagnetic Interference (EMI) via electric wire or connection propagation.The induction reactance that produces because of impedance, because of the frequency height different.Therefore continuous helical groove groove cutting type fixed resistor can produce the excessive phenomenon of phase difference to the sound machine with high, medium and low frequency.
To the switched power supplier of communication Instrument, computer, not power cutoff device, high-frequency seal machine, motor driver, television set or computer picture even, inductance because of continuous helical groove groove cutting type fixed resistor, and generation surging or noise, surging can influence the life-span of power crystal, and noise then can influence the quality of sound or picture.
The present application artificially solves foregoing problems, once proposes patent application with " electrical equipment and electronic circuit have groove cutting type fixed resistor with conducting film ", and this case also is No. the 415622nd, TaiWan, China patent announcement through checking and approving bulletin.
The purpose of this utility model is to provide a kind of structure-improved of conducting film fixed resistor, and a kind of electric and electronic circuit discontinuous spiral groove of conducting film cutting type fixed resistor is provided.Make it when frequency is high more, still can reach and do not produce noise or the less effect of impedance variation.
For achieving the above object, the structure-improved of a kind of conducting film fixed resistor that the utility model provides, has an electric insulating quality body of rod, this electric insulating quality body of rod has one first end, one second end and a rod body, be coated with a conducting film in this electric insulating quality body of rod, and press a metal cap respectively in first end and second end of this electric insulating quality body of rod, conducting film on the rod body of this electric insulating quality body of rod is through being cut with a plurality of grooves, and these a plurality of grooves also center on the shape arrangement in the shape of a spiral of this rod body.
Wherein this electric insulating quality body of rod be shaped as cylindric or cylindric.
Wherein the material of this electric insulating quality body of rod is pottery or glass.
Wherein the conducting film on this electric insulation base material is carbon film, metal oxide film or metal film.
Wherein this metal cap is through the guide pin of having burn-on.
Description of drawings
For further specifying structure of the present utility model and feature thereof, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is the unvarnished conducting film ceramic rod of known continuous helical groove groove cutting type fixed resistor;
Fig. 2 is the testing impedance curve of known resistor (continuous helical groove groove cutting type fixed resistor);
Fig. 3 is the unvarnished conducting film ceramic rod of discontinuous spiral groove cutting type fixed resistor of the present utility model;
Fig. 4 is the equivalent circuit diagram of low frequency mode resistor under radio frequency;
Fig. 5 is the equivalent circuit diagram of high frequency mode resistor under radio frequency;
Fig. 6 is the testing impedance curve of the utility model resistor (discontinuous spiral groove cutting type fixed resistor).
Embodiment
For more understanding technology contents of the present utility model, be described as follows especially exemplified by several preferred embodiment.
Structure of the present utility model sees also Fig. 3, and conducting film fixed resistor of the present utility model has an electric insulating quality body of rod 10 and two metal caps 20 and 21 haply.
The electric insulating quality body of rod 10 has one first end 11, one second end 12 and a rod body 13, be coated with a conducting film 30 in this electric insulating quality body of rod 10, and press a metal cap 20 and metal cap 21 respectively in first end 11 and second end 12 of this electric insulating quality body of rod 10, and the conducting film 30 on the rod body 11 of the electric insulating quality body of rod 10 is through being cut with a plurality of grooves 31, these a plurality of grooves 31 also center on this shaft, and portion 13 shape in the shape of a spiral arranges.
Conducting film fixed resistor of the present utility model can be welded with guide pin 41 and 42 respectively on metal cap 20 and metal cap 21.
Conducting film fixed resistor of the present utility model is when actual production, can be earlier with classifier with the electric insulating quality body of rod 10 classification of different Standard resistance ranges each cohort of hanking, in addition discontinuous again spiral groove cutting, after putting into the feeding device of bonding machine then, then can on the metal cap 20 and 21 at the electric insulating quality body of rod 10 two ends, weld guide pin 41 and 42, or do not weld guide pin, the last electric insulating quality body of rod 10 that will weld guide pin again or not weld guide pin moves in the feeding device of coating machine, automatically feed is coated flammable lacquer or noninflammability lacquer to device for painting, colour coding or stamp literal and numeral on now is drawn in same set of installation device is promptly finished conducting film fixed resistor of the present utility model.
The advantage of conducting film fixed resistor of the present utility model is as follows, sees also Fig. 4 and shown in Figure 5 and cooperate and to consult Fig. 2 and Fig. 6, and shown in Figure 4 is when resistor during at low frequency, can regard pure resistance as; During so as high frequency, shown in its equivalent electric circuit Fig. 5, its resistance value
| Z| (impedance)=R
2(pure resistance)
2+ (JX)
2(inductance)
2
Be subjected to the pure resistance composition of resistor itself and lead thereof exactly, and comprise the influence of the impedance of induction reactance or capacitive reactance, frequency is high more, and high frequency characteristics is obvious more.
Table one: the 1/4w of known resistor (A) and the utility model resistor (B), 50 Ω, ± 1% metal skin film resistor, frequency range just commonly used, the variation situation of the resistance value under the different frequency:
| Testing efficiency | Commonly use resistor (A) | The utility model resistor (B) | ||
| Resistance value | The absolute value of rate of change | Resistance value | The absolute value of rate of change | |
| 1MHz (megahertz) | |Z|＝49.935(Ω) | 0.130(％) | |Z|＝49.294(Ω) | 0.420(％) |
| 5MHz (megahertz) | |Z|＝49.933(Ω) | 0.134(％) | |Z|＝49.793(Ω) | 0.414(％) |
| 30MHz (megahertz) | |Z|＝49.996(Ω) | 0.080(％) | |Z|＝49.821(Ω) | 0.358(％) |
| 50MHz (megahertz) | |Z|＝50.011(Ω) | 0.022(％) | |Z|＝49.814(Ω) | 0.358(％) |
| 100MHz (megahertz) | |Z|＝50.157(Ω) | 0.314(％) | |Z|＝49.857(Ω) | 0.286(％) |
| 750MHz (megahertz) | |Z|＝58.250(Ω) | 16.500(％) | |Z|＝52.524(Ω) | 5.048(％) |
| 1,000MHz (megahertz) | |Z|＝66.056(Ω) | 32.090(％) | |Z|＝52.620(Ω) | 5.240(％) |
| 1,800MHz (megahertz) | |Z|＝65.632(Ω) | 31.640(％) | |Z|＝49.935(Ω) | 14.162(％) |
The known resistor (A) of table one is the metal film porcelain rod of the vacuum sputtering manufactured that provided by the same trade, and the cutting of continuous helical groove groove is made; The utility model resistor (B) also is the metal film porcelain rod by the vacuum sputtering manufactured, makes via discontinuous spiral groove cutting.
Known resistor (A) is by same instrument test with the utility model resistor (B).Instrument model: AGILENT 4219B RF/MPEDANCN/MATERIALANALYZER 1MHz-1.86Hz
Known resistor (A) is a continuous helical groove groove cutting type fixed resistor.The utility model resistor (B) is discontinuous spiral groove cutting type fixed resistor.
Comparison person is provided during test, and two kinds of samples are all 0.25W, 50 Ω, and ± 1% metal skin film resistor, it is as resistance value such as table one under the different frequency.
When frequency 1MHz, the resistance value of known resistor (A) is 49.935 Ω (ohms) as shown in Table 1.The impedance of the utility model resistor (B) is 49.794 Ω.Two kinds of samples differ not remarkable at the following of this 1MHz frequency.
When frequency is 5MHz, the resistance value of known resistor (A) continuous helical groove groove cutting type fixed resistor is 49.933 Ω, the impedance of the utility model resistor (B) is 49.793 Ω, two kinds of samples significant difference of no resistance value still when this frequency 5MHz.
When frequency was 30MHz, the impedance of known resistor (A) was 49.996 Ω, was 49.821 Ω yet sample B is the resistance value of discontinuous lira groove cutting type fixed resistor of the present utility model.The impedance of two kinds of samples discontinuous lira groove cutting type fixed resistor of the present utility model when this frequency 30MHz is lower than the impedance of known continuous helical groove groove cutting type fixed resistor does not still have significant difference.
The impedance of known resistor (A) is 50.011 Ω when frequency 50MHz, but the impedance of the utility model resistor (B) is 49.814 Ω, and both still do not have significant difference.
When improving frequency to 100MHz again, the impedance of known resistor (A) is 50.157 Ω.This impedance is compared with impedance 49.857 Ω of the utility model resistor (B), and both differ limited, can not be considered as significant difference.The impedance of discontinuous spiral groove cutting type fixed resistor of the present utility model is 52.524 Ω when 750MHz, is 58.250 Ω than the impedance of known continuous helical groove groove cutting type fixed resistor, differs about 11%.
More improve frequency to 1, during 200MHz (1.2GHz), the impedance of known resistor (A) is 66.406 Ω, and the utility model resistor (B) is 1 in frequency, impedance only is 52.62 Ω during 200MHz (1.2GHz), both impedance rate of change are 32% and 5%, should be that the rate of change of discontinuous spiral groove cutting type fixed resistor of the present utility model is less.
1, during 800MHz (1.8GHz), the impedance of known resistor (A) is 65.632 Ω) absolute value of its rate of change is about about 32%.With respect to impedance 49.935 Ω of the utility model resistor (B), the absolute value of its impedance rate of change is about about 14%.
Claims (5)
1. the structure-improved of a conducting film fixed resistor, this conducting film fixed resistor has an electric insulating quality body of rod, this electric insulating quality body of rod has one first end, one second end and a rod body, be coated with a conducting film in this electric insulating quality body of rod, and press a metal cap respectively in first end and second end of this electric insulating quality body of rod, it is characterized in that: the conducting film on the rod body of this electric insulating quality body of rod is through being cut with a plurality of grooves, and these a plurality of grooves also center on the shape arrangement in the shape of a spiral of this rod body.
2. structure-improved as claimed in claim 1 is characterized in that, wherein this electric insulating quality body of rod be shaped as cylindric or cylindric.
3. structure-improved as claimed in claim 1 is characterized in that, wherein the material of this electric insulating quality body of rod is pottery or glass.
4. structure-improved as claimed in claim 1 is characterized in that, wherein the conducting film on this electric insulation base material is carbon film, metal oxide film or metal film.
5. structure-improved as claimed in claim 1 is characterized in that, wherein is welded with a guide pin on this metal cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01270143 CN2508357Y (en) | 2001-11-05 | 2001-11-05 | Improved structure of conductive film fixed resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01270143 CN2508357Y (en) | 2001-11-05 | 2001-11-05 | Improved structure of conductive film fixed resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2508357Y true CN2508357Y (en) | 2002-08-28 |
Family
ID=33675822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01270143 Expired - Fee Related CN2508357Y (en) | 2001-11-05 | 2001-11-05 | Improved structure of conductive film fixed resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2508357Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086098A (en) * | 2016-11-07 | 2017-08-22 | 蚌埠市正园电子科技有限公司 | The metalfilmresistor and its processing method of a kind of not equidistant grooves |
| CN105810423B (en) * | 2015-01-21 | 2018-09-25 | 株式会社电装 | Ignition coil for internal combustion engine |
| CN110047635A (en) * | 2019-05-05 | 2019-07-23 | 西北核技术研究所 | Solid flexible resistance for edge pulse power supply of drawing last breath |
| CN115206608A (en) * | 2021-04-08 | 2022-10-18 | 光颉科技股份有限公司 | Pulse resistance trimming manufacturing method of columnar resistor element and columnar resistor manufactured in pulse resistance trimming mode |
-
2001
- 2001-11-05 CN CN 01270143 patent/CN2508357Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810423B (en) * | 2015-01-21 | 2018-09-25 | 株式会社电装 | Ignition coil for internal combustion engine |
| CN107086098A (en) * | 2016-11-07 | 2017-08-22 | 蚌埠市正园电子科技有限公司 | The metalfilmresistor and its processing method of a kind of not equidistant grooves |
| CN110047635A (en) * | 2019-05-05 | 2019-07-23 | 西北核技术研究所 | Solid flexible resistance for edge pulse power supply of drawing last breath |
| CN115206608A (en) * | 2021-04-08 | 2022-10-18 | 光颉科技股份有限公司 | Pulse resistance trimming manufacturing method of columnar resistor element and columnar resistor manufactured in pulse resistance trimming mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |