DE1490546A1 - Electrical sheet resistance - Google Patents
Electrical sheet resistanceInfo
- Publication number
- DE1490546A1 DE1490546A1 DE19641490546 DE1490546A DE1490546A1 DE 1490546 A1 DE1490546 A1 DE 1490546A1 DE 19641490546 DE19641490546 DE 19641490546 DE 1490546 A DE1490546 A DE 1490546A DE 1490546 A1 DE1490546 A1 DE 1490546A1
- Authority
- DE
- Germany
- Prior art keywords
- resistance
- layers
- electrical
- resistances
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/06—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Non-Adjustable Resistors (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Description
Elektrischer Schichtwiderstand Die Erfindung betrifft einen elektrischen Schichtwiderstand, der zur Verminderung und insbesondere Vermeidung eines,Temperaturkoeffizienten seines Widerstandswertes eine Widerstandsschicht aufweist, die aus verschiedenartigen, auf einen nichtleitenden Tragkörper aufgebrachten Widerstandsschichten entgegengesetzt gerichteten Temperaturkoeffizienten besteht.Electrical sheet resistor The invention relates to an electrical one Sheet resistance, which is used to reduce and in particular avoid a temperature coefficient of its resistance value has a resistance layer made of various Opposite resistance layers applied to a non-conductive support body directed temperature coefficient.
Die Benutzung von abwechselnd aufgebrachten Kohlenstoff-und Metallschichten zur Beeinflussung des Temperaturkoeffizientens des Widerstandswertes ist an sich bekannt. Bei einer derartigen bekannten Anordnung handelt es sich um eine auf einen Teil einer Kohlenstoffschicht aufgebrachte Metallschicht, die infolge ihres positiven Temperaturverhaltens das entgegengesetzte Verhalten der Kohlenstoffschicht kompensieren soll.The use of alternating layers of carbon and metal to influence the temperature coefficient of the resistance value is in itself known. Such a known arrangement is one on one Part of a carbon layer applied metal layer, which as a result of its positive Temperature behavior compensate for the opposite behavior of the carbon layer target.
Auch der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen elektrischen Widerstand zu schaffen, dessen Aufbau so gewählt ist, daß sich die verschiedenartigen, auf einem gemeinsamen nichtleitenden Tragkörper aufgebrachten Widerstandsschichten wegen ihres gegensinnigen Temperaturverhaltens kompensieren.The present invention is also based on the object To create electrical resistance, the structure of which is chosen so that the different types, applied to a common non-conductive support body Compensate resistance layers because of their opposite temperature behavior.
Zu diesem Zweck ist gemäß der Erfindung vorgesehen, daß die Widerstandsschichten mit entgegengesetzt gerichteten Temperaturkoeffizienten ihrer Widerstände auf den Tragkörper aufgebracht sind und das Verhältnis der Summen der Widerstandswerte der Schichten mit untereinander jeweils gleichen oder fast gleichen Temperaturkoeffizienten ihrer Widerstände zueinander umgekehrt proportional dem Verhältnis der Temperaturkoeffizienten ihrer Widerstände ist.For this purpose it is provided according to the invention that the resistance layers with oppositely directed Temperature coefficients of their resistances are applied to the support body and the ratio of the sums of the resistance values of the layers with the same or almost the same temperature coefficients their resistances to each other inversely proportional to the ratio of the temperature coefficients their resistances is.
Bei in Reihe aufgebrachten reinen Metallschichten mit einem Tk von +¢000 . 10 6 /Grad Celsius und Kohleschichten mit einem Tk von -220 . 10-6 /Grad Celsius müssen sich dementsprechend die Widerstandswerte der aufgebrachten Metall- und Kohleschichtanteile wie etwa 1 : 20 verhalten. Soweit bedingt durch Schwankungen im Ablauf, z.B. des Aufdampfverfahrens, Abweichungen von dem geforderten Verhältnis der Widerstandswerte zueinander auftreten, können diese beispielsweise dadurch korrigiert werden, daß die einen und/oder anderen Schichten jeweils gleichen Temperaturkoeffizientens mittels Wendeln auf die geforderten Widerstandswerte geschliffen werden. Insbesondere für höhere Widerstandswerte empfiehlt sich dabei die Wendelung einer in Längsmitte' des Tragkörpers aufgebrachten ldetallschicht. Hierdurch ergeben sich günstigere Belastungsverhältnisse. Zweckmäßig wird man bereits bei Aufbringen der einzelnen Widerstandsschichten die einen und/oder anderen Schichten durch entsprechende Schichtdicken und/oder Längenbemessung derart in ihren Widerstandswerten festlegen, daß zumindest annähernd sich ihre Widerstandswerte zueinander umgekehrt proportional wie die Temperaturkoeffizienten verhalten.With pure metal layers applied in series with a TC of + ¢ 000. 10 6 / degrees Celsius and coal layers with a TC of -220. 10-6 / degree Celsius, the resistance values of the applied metal and carbon layer components must accordingly as about 1: behave 20th If deviations from the required ratio of the resistance values occur due to fluctuations in the process, e.g. the vapor deposition process, these can be corrected, for example, by grinding the one and / or other layers with the same temperature coefficient to the required resistance values by means of coils. In particular, for higher resistance values, it is advisable to twist an metal layer applied in the longitudinal center of the support body. This results in more favorable loading conditions. When the individual resistance layers are applied, the resistance values of one and / or the other layers are expediently determined by appropriate layer thicknesses and / or length measurements in such a way that their resistance values are at least approximately inversely proportional to one another as the temperature coefficients.
In einer bevorzugten Ausführungsfora eines solchen Widerstandes sind dabei Kohlenstoff- und Metall-, hier wiederum insbesondere Nickelschichten in Reihe auf dem Tragkörper aufgebracht, wobei ggf. anstelle der Kohlenstoffschichten Netalloiidschichten verwendet werden können.In a preferred Ausführungsfora such a resistor thereby are carbon and metal, in particular nickel layers, in turn, applied in series on the support body here, which, if necessary, instead of the carbon layers Netalloiidschichten can be used.
Zur näheren Erläuterung der Erfindung sind in der Zeichnung Ausführungsbeispiele des Gegenstandes der Erfin-dung dargestellt. For further explanation of the invention, the object of the invention are shown in the drawings embodiments.
Auf dem in Fig. 1 dargestellten Tragkörper 1, z.B. aus Glas oder Keramik, sind abwechselnd in Reihe Metall-und Kohlenstoffachichten 2 bzw. 3 aufgebracht und die von den kappenförnigen Anechlußelementen 4,5 freien Widerstandsschichten derart gewendelt, daB sich das Ver- hältnis aus dem Gesamtwiderstandswert der Kohlenstoffschichten zu dem Gesamtwiderstandawert der Metallschich- ten umgekehrt proportional wie deren Temperaturkoeffi- zienten zueinander verhält. Bein elektrischen Widerstand nach Pig. 2 sind die auf die Kohlenstoffschicht 3 aufgebrachten Metallschichte n 2 derart in ihrer Länge bemessen, daß die vorgenannte Forderung ebenfalls er- füllt und der Temperaturkoeffizient des Gesamtwider-standes Null ist. Die z.B. drahtförmig und mit scheibenförmigen Enden ausgebildeten Stromanschluflelemente können unmittelbar mit Lot 6 mit der Metallschicht fest verbunden werden. On the support body 1 shown in FIG. 1, for example made of glass or ceramic, metal and carbon layers 2 and 3 are alternately applied in series and the resistance layers free of the cap-shaped connection elements 4, 5 are coiled in such a way that the relationship is formed the total resistance value of the carbon layers to the Gesamtwiderstandawert the metal layers in inverse proportion as the temperature coefficients behaves each other. Leg electrical resistance according to Pig. 2, applied to the carbon layer 3 metal layer are n 2 such in their length dimensioned so that the aforesaid requirement also fills ER and the temperature coefficient of Gesamtwider- is prior zero. The power connection elements, for example wire-shaped and with disk-shaped ends, can be directly connected to the metal layer directly with solder 6.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0090313 | 1964-03-31 | ||
DES0090313 | 1964-03-31 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1490546A1 true DE1490546A1 (en) | 1969-09-04 |
DE1490546B2 DE1490546B2 (en) | 1972-12-21 |
DE1490546C DE1490546C (en) | 1973-07-12 |
Family
ID=
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301665A1 (en) * | 1983-01-20 | 1984-07-26 | Brown, Boveri & Cie Ag, 6800 Mannheim | METHOD FOR PRODUCING A THIN FILM RESISTOR |
DE4314364A1 (en) * | 1992-04-30 | 1993-11-04 | Mitsubishi Electric Corp | Thermal flow sensor with reduced errors in measurement - comprising heat sensitive electrical resistance, holder, bridge circuit, and control switch |
DE102010003030A1 (en) | 2010-03-18 | 2011-09-22 | Technische Universität Dresden | High performance mass resistor e.g. positive temperature coefficient resistor, for use in e.g. high frequency applications, has support material whose volume is temperature-independent in relation to volumes of resistant or bonding material |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301665A1 (en) * | 1983-01-20 | 1984-07-26 | Brown, Boveri & Cie Ag, 6800 Mannheim | METHOD FOR PRODUCING A THIN FILM RESISTOR |
DE4314364A1 (en) * | 1992-04-30 | 1993-11-04 | Mitsubishi Electric Corp | Thermal flow sensor with reduced errors in measurement - comprising heat sensitive electrical resistance, holder, bridge circuit, and control switch |
US5465618A (en) * | 1992-04-30 | 1995-11-14 | Mitsubishi Denki Kabushiki Kaisha | Thermal flow sensor and heat-sensitive resistor therefor |
DE102010003030A1 (en) | 2010-03-18 | 2011-09-22 | Technische Universität Dresden | High performance mass resistor e.g. positive temperature coefficient resistor, for use in e.g. high frequency applications, has support material whose volume is temperature-independent in relation to volumes of resistant or bonding material |
Also Published As
Publication number | Publication date |
---|---|
DE1490546B2 (en) | 1972-12-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 |