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EP0072523A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Protection circuit for a field effect transistor in a load circuit

Assignee: Siemens AG
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Filing: 1982-08-10
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Granted: —
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Expires: 2002-08-10
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Abstract

Abstract Translated from German Die Schutzschaltung verhindert ein kritisches Ansteigen des Laststromes. Sie besteht aus einer parallel zur gesteuerten Strecke des Feldeffekttransistors 15 geschalteten Strommeßschaltung 5,6, deren Ausgang einen ersten Schalter 12 steuert. Der erste Schalter begrenzt die Steuerspannung am Steuereingang des Feldeffekttransistors. Ein weiterer Schalter 13 sperrt den Steuereingang des ersten Schalters, sobald ein Taktimpuls am Eingang 17 der Schaltung anliegt. The protective circuit prevents a critical increase in the load current. It consists of a current measuring circuit 5,6 connected in parallel with the controlled path of the field effect transistor 15, the output of which controls a first switch 12. The first switch limits the control voltage at the control input of the field effect transistor. Another switch 13 blocks the control input of the first switch as soon as a clock pulse is present at input 17 of the circuit.

Inventors

  • 👤 Klaus Ing.(Grad.) Hoepfner
  • 👤 Bernd Dipl.-Ing. Klauck

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 11:55
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/08; H03K17/082; H03K17/0822

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