Control device for electro-actuators with protection against...

Details Control device for electro-actuators with protection against... Control device for electro-actuators with protection against...

2004-11-19

2010-02-16

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

C361S093100

Reexamination Certificate

active

07663858

ABSTRACT:
A control device (2) for an electro-actuator (3) comprising a first and a second input terminal (4, 5) connected to an electrical energy source (6); a first and a second output terminal (10, 11) connected to the electro-actuator (3); and selectively controlled switches (16, 17, 18) which can be activated in order to connect the first and second output terminals (10, 11) to the first and second input terminals (4, 5) in predetermined operative conditions; the controlled switches (17, 18) comprise first controlled switches (17) which are connected between the first input terminal (4) and the first output terminal (10) and second controlled switches (18) which are connected between the second input terminal (5) and the second output terminal (11); the control device (2) additionally comprises first sensors (31) which are connected to the ends of the first controlled switches (17) and provide a first signal (VHS) which is indicative of the current flowing in the first controlled switches (17).

REFERENCES:
patent: 5159516 (1992-10-01), Fujihira
patent: 5724218 (1998-03-01), Tihanyi
patent: 6236554 (2001-05-01), Groppo et al.
patent: 6624994 (2003-09-01), Schmoock et al.
patent: 4026398 (1991-02-01), None
patent: 0 358 972 (1990-03-01), None
patent: 0 924 589 (1999-06-01), None
ST, IRFP460 N-Channel 500V-0.22ohm-18.4A to-247 PowerMesh II MOSFET, May 2001 pp. 1-8.

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