Driver circuit

Details Driver circuit Driver circuit

2005-07-05

2005-07-05

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Internal-combustion engine ignition system or device

Electronic ignition system

C324S378000, C123S644000

Reexamination Certificate

active

06914434

ABSTRACT:
Driver circuit (1) for actuating an electrical device via a control line (3) and for diagnosing the state of the control line (3) and/or of the actuated device, having a test circuit (Q1-Q6, R1-R6), connected to the control line (3), for measuring the electrical output current flowing via the control line (3), and an evaluation unit (5-8), connected to the test circuit, for generating a diagnostic signal (DIAG) on the basis of the measured output current, the test circuit having at least one current mirror circuit (Q1, Q2; Q4-Q5).

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Habiger, E. U.A.: Elektromagnetische Vertraglichkeit, Verlag Technik Berlin Munchen, 2. Auflage 1992, ISBN 3-341-00993-0, S. 566, 567.

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