AT166379B - Impregnated voltage-dependent resistor - Google Patents
Impregnated voltage-dependent resistorInfo
- Publication number
- AT166379B AT166379B AT166379DA AT166379B AT 166379 B AT166379 B AT 166379B AT 166379D A AT166379D A AT 166379DA AT 166379 B AT166379 B AT 166379B
- Authority
- AT
- Austria
- Prior art keywords
- voltage
- impregnated
- resistor
- dependent resistor
- dependent
- Prior art date
Links
Landscapes
- Thermistors And Varistors (AREA)
Description
<Desc/Clms Page number 1>
Imprägnierter spannungsabhängiger Widerstand
Es ist bekannt, dass spannungsabhängige Widerstände von kristallinem Aufbau zur Erhöhung der elektrischen Belastbarkeit mit isolierenden Substanzen nach dem Brennen imprägniert werden können. Zum Imprägnieren wurden die üblichen organischen Substanzen, wie Öl, Wachs, Paraffin usw., verwendet. Es hat sich aber gezeigt, dass den mit diesen Mitteln imprägnierten Widerständen ein grosser Nachteil anhaftet, welcher darin besteht, dass die Stromspannungscharakteristik des spannungsabhänigen Widerstandes bei der wiederholten, stossweisen Belastung, wie sie im Betrieb auftritt, unzulässigen Veränderungen unterworfen ist. Diese Ver- änderungen werden dadurch hervorgerufen, dass sich diese Imprägniermittel unter dem Einfluss des Stossstromes verändern.
Gemäss vorliegender Erfindung wird dieser Nachteil dadurch vermieden, dass bei der Herstellung eines spannungsabhängigen Widerstandes von kristallinem Aufbau der fertige Widerstandskörper nach seiner endgültigen Formgebung mit einem anorganischen Stoff imprägniert wird, welcher unter dem Einfluss von den Widerstandskörper durchfliessenden elektrischen Ströme keine die Stromspannungscharakteristik des Widerstandes beeinflussende Veränderung erfährt.
Solche Imprägnierstoffe sind vorzugsweise z. B.
Wasserglas. Diese Stoffe haben, wie die oben erwähnten organischen Stoffe, die Fähigkeit, aie elektrische Belastbarkeit des Materials zu erhöhen. Dabei wird jedoch die Stromspannungscharakteristik des spannungsabhängigen Widerstandes bei stossweiser Belastung nicht verändert.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Impregnated voltage-dependent resistor
It is known that voltage-dependent resistors with a crystalline structure can be impregnated with insulating substances after firing in order to increase the electrical load capacity. The usual organic substances such as oil, wax, paraffin, etc. were used for impregnation. It has been shown, however, that the resistors impregnated with these agents have a major disadvantage, which is that the current-voltage characteristic of the voltage-dependent resistor is subject to impermissible changes under the repeated, intermittent loading that occurs during operation. These changes are caused by the fact that these impregnating agents change under the influence of the surge current.
According to the present invention, this disadvantage is avoided in that when producing a voltage-dependent resistor with a crystalline structure, the finished resistor body is impregnated after its final shape with an inorganic substance which, under the influence of the electrical currents flowing through the resistor body, does not change the voltage characteristics of the resistor learns.
Such impregnating agents are preferably z. B.
Water glass. Like the organic substances mentioned above, these substances have the ability to increase the electrical load capacity of the material. However, the voltage characteristic of the voltage-dependent resistor is not changed in the event of intermittent loading.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH166379X | 1943-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT166379B true AT166379B (en) | 1950-07-25 |
Family
ID=34200941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT166379D AT166379B (en) | 1943-10-22 | 1947-12-01 | Impregnated voltage-dependent resistor |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT166379B (en) |
-
1947
- 1947-12-01 AT AT166379D patent/AT166379B/en active
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