EP 1547233 A1 20050629 - APPARATUS AND METHOD FOR CHARGING AND DISCHARGING A CAPACITOR TO A PREDETERMINED SETPOINT
Title (en)
APPARATUS AND METHOD FOR CHARGING AND DISCHARGING A CAPACITOR TO A PREDETERMINED SETPOINT
Title (de)
VORRICHTUNG UND VERFAHREN ZUM LADEN UND ENTLADEN EINES KONDENSATORS AUF EINEN VORBESTIMMTEN SOLLWERT
Title (fr)
APPAREIL ET PROCEDE DE CHARGE ET DE DECHARGE D'UN CONDENSATEUR JUSQU'A UNE VALEUR DE CONSIGNE PREDETERMINEE
Publication
Application
Priority
- US 0323751 W 20030730
- US 40846802 P 20020905
Abstract (en)
[origin: WO2004023636A1] An apparatus using electrically stimulated smart material requires a power source to stimulate the material. This power source has three main functions, (1) to apply a known voltage potential across the smart material, (2) to convert from the control voltage to a level suitable for the smart material, and (3) to regulate the voltage based on a control input. The power source is a DC to DC converter with special properties achieved by supplying a variable stimulating voltage or actively discharging the actuator. The circuit also provides a dead band, or hysteresis, between the charge point and discharge point. When this circuit is applied with a proportional, mechanically leveraged smart material actuator, a general-purpose industrial actuator becomes a cost-effective solution.
IPC 1-7
IPC 8 full level
H01L 41/04 (2006.01); H02M 3/335 (2006.01)
CPC (source: EP)
H02M 3/33507 (2013.01); H02M 3/3353 (2013.01); H02M 3/33576 (2013.01); H02N 2/0075 (2013.01); H10N 30/802 (2023.02)
Citation (search report)
See references of WO 2004023636A1
Citation (examination)
- US 3947747 A 19760330 - SMITH ARTHUR
- US 5130598 A 19920714 - VERHEYEN MICHAEL R [US], et al
- US 5895998 A 19990420 - SAYLOR RICHARD [US]
- EP 1067608 A1 20010110 - RENAULT [FR]
- US 6147433 A 20001114 - REINEKE JOERG [DE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004023636 A1 20040318; AU 2003257010 A1 20040329; CA 2495486 A1 20040318; CA 2495486 C 20130716; CN 1701499 A 20051123; EP 1547233 A1 20050629; JP 2006512034 A 20060406; JP 4421479 B2 20100224
DOCDB simple family (application)
US 0323751 W 20030730; AU 2003257010 A 20030730; CA 2495486 A 20030730; CN 03820972 A 20030730; EP 03794449 A 20030730; JP 2004534255 A 20030730