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1. (WO2009135815) FAST PRECISION CHARGE PUMP
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/135815    International Application No.:    PCT/EP2009/055346
Publication Date: 12.11.2009 International Filing Date: 04.05.2009
IPC:
H04R 19/00 (2006.01), G05F 3/20 (2006.01), H02M 3/07 (2006.01), H04R 3/00 (2006.01)
Applicants: EPCOS PTE LTD [SG/SG]; 166 Kallang Way Singapore 349249 (SG) (For All Designated States Except US).
HANZLIK, Tomasz E. [PL/PL]; (PL) (For US Only).
POULSEN, Jens Kristian [DK/DK]; (DK) (For US Only)
Inventors: HANZLIK, Tomasz E.; (PL).
POULSEN, Jens Kristian; (DK)
Agent: EPPING HERMANN FISCHER PATENTANWALTSGESELLSCHAFT MBH; Ridlerstr. 55 80339 Munich (DE)
Priority Data:
61/126,491 05.05.2008 US
Title (EN) FAST PRECISION CHARGE PUMP
(FR) POMPE DE CHARGE PRECISE ET RAPIDE
Abstract: front page image
(EN)The present invention relates to a condenser microphone assembly comprising a capacitive electro-acoustic transducer element comprising a diaphragm and a back-plate operatively connected to a DC bias voltage, a fast charge pump adapted to generate the DC bias voltage, and a controllable or programmable current source operatively connected to the DC bias voltage to draw a predetermined DC current there from. The controllable or programmable current source is responsive to a difference between a representative of a detected DC bias voltage and a DC reference voltage.
(FR)L’invention concerne un ensemble microphone à condensateur comprenant un élément transducteur électro-acoustique capacitif constitué d’un diaphragme et d’une plaque arrière connectée fonctionnelle à une tension de polarisation CC, une pompe de charge rapide conçue pour générer la tension de polarisation CC, ainsi qu’une source de courant programmable ou réglable connectée fonctionnelle à la tension de polarisation CC pour en tirer un courant continu prédéterminé. La source de courant programmable ou réglable réagit à une différence entre une tension de polarisation CC détectée et une tension CC de référence.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)