Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung | ||
| electrical_engineering_1:preparation_properties_proportions [2025/09/15 15:26] – mexleadmin | electrical_engineering_1:preparation_properties_proportions [2025/09/15 15:27] (aktuell) – mexleadmin | ||
|---|---|---|---|
| Zeile 1: | Zeile 1: | ||
| - | # | + | # |
| + | |||
| ====== 1 Preparation, | ====== 1 Preparation, | ||
| Zeile 622: | Zeile 622: | ||
| The values of the resistors are standardized in such a way, that there is a fixed number of different values between $1~\Omega$ and $10~\Omega$ or between $10~\rm k\Omega$ and $100~\rm k\Omega$. These ranges, which cover values up to the tenfold number, are called decades. In general, the resistors are ordered in the so-called {{wp>E series of preferred numbers}}, like 6 values in a decade, which is named E6 (here: $1.0~\rm k\Omega$, $1.5~\rm k\Omega$, $2.2~\rm k\Omega$, $3.3~\rm k\Omega$, $4.7~\rm k\Omega$, $6.8~\rm k\Omega$). As higher the number (e.g. E24) more different values are available in a decade, and as more precise the given value is. | The values of the resistors are standardized in such a way, that there is a fixed number of different values between $1~\Omega$ and $10~\Omega$ or between $10~\rm k\Omega$ and $100~\rm k\Omega$. These ranges, which cover values up to the tenfold number, are called decades. In general, the resistors are ordered in the so-called {{wp>E series of preferred numbers}}, like 6 values in a decade, which is named E6 (here: $1.0~\rm k\Omega$, $1.5~\rm k\Omega$, $2.2~\rm k\Omega$, $3.3~\rm k\Omega$, $4.7~\rm k\Omega$, $6.8~\rm k\Omega$). As higher the number (e.g. E24) more different values are available in a decade, and as more precise the given value is. | ||
| - | For larger resistors with wires, the value is coded by four to six colored bands (see __ BROKEN-LINK: | + | For larger resistors with wires, the value is coded by four to six colored bands (see __ BROKEN-LINK: |
| < | < | ||
| Zeile 1042: | Zeile 1042: | ||
| This process is also reversible: When cooled down, the conducting paths get re-connected. | This process is also reversible: When cooled down, the conducting paths get re-connected. | ||
| These components are also called **polymer positive temperature coefficient** components or PPTC. \\ | These components are also called **polymer positive temperature coefficient** components or PPTC. \\ | ||
| - | In the diagram below the internal structure and the resistance over the temperature are shown (more details about the structure and function can be found __ BROKEN-LINK: | + | In the diagram below the internal structure and the resistance over the temperature are shown (more details about the structure and function can be found __ BROKEN-LINK: |
| {{drawio> | {{drawio> | ||