Siemens Aktiengesellschaft

Karl Niedermeier

Christoph Nöth

Annemarie Lehmeier

Peter Hauselt

Martin Meinke

Manfred Wintzer

Josef Kaser

Jens Ulrich

Roman Wunschik

The invention relates to a regulating device () for a motor, comprising a housing () which can be associated with said motor and in which a control unit () and an actuator () are arranged. Due to heat-related reasons, said device can only be used in an encapsulated manner, for example close to a motor. In order to solve this problem, the actuator () comprises an electromagnetic switching element () and the control signal () for the same is designed as a timing signal which is measured&#x2014;taking into consideration at least one heat source inside or optionally outside the housing ()&#x2014;in such a way that the operating temperature of the electromagnetic switching element () is below an upper authorised limiting value.

Regulating device for a motor

A process for the production of ceramic substrates for thin layer circuits utilizes a cast compound which may be transformed into a ceramic body by sintering. The compound is poured out in the form of a coating on a base, for drying whereupon a leather-like, tough, 'green' substrate layer is formed from which the required shapes can be punched out and sintered. In the green, air-drying state, the substrates are exposed to a pressure of up to approximately 1000 kp/cm.sup.2 between highly polished, plane parallel surfaces constituted by mirror finished surfaces of compression rams which may advantageously include highly polished surfaces of synthetic material.

Process for the production of ceramic substrates for thin layer circuits

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Kitzingen, Germany

Karl Niedermeier