Patent Number: 6,166,565

Title: Circuit for comparing two electrical quantities

Abstract: The circuit arrangement has two electrical quantities in the form of a first quadrature-axis current component (I.sub.1) and of a second quadrature-axis current component (I.sub.2) that are compared to one another. The circuit arrangement has a first inverter unit (n.sub.1, p.sub.1) and a second inverter unit (n.sub.2, p.sub.2). Respectively one output (50, 52) of the two inverter units ((n.sub.1, p.sub.1, (n.sub.2, p.sub.2)) are coupled to an input of the respectively other inverter unit (52, 53). A reset unit (5) that initiates the comparison of the currents when activated is located between the two outputs of the two inverter units (n.sub.1, p.sub.2). When the reset unit (5) is deactivated, the output datum obtained in the evaluation remains stable.

Inventors: Thewes; Roland (Puchheim, DE), Prange; Stefan (Munchen, DE), Wohlrab; Erdmute (Munchen, DE), Weber; Werner (Munchen, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: G06F 7/48 (20060101); G06F 7/52 (20060101); H03K 005/22 ()

Expiration Date: 12/26/2017