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Machine translation
1. (WO2001003299) IMPROVEMENTS IN AND RELATING TO TRIANGLE WAVE GENERATORS AND POWER AMPLIFIERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/003299    International Application No.:    PCT/GB2000/002542
Publication Date: 11.01.2001 International Filing Date: 30.06.2000
Chapter 2 Demand Filed:    31.01.2001    
IPC:
G01R 15/18 (2006.01), G01R 19/165 (2006.01), H02M 7/5387 (2007.01), H03F 1/52 (2006.01), H03F 3/217 (2006.01), H03K 3/0231 (2006.01), H03K 4/06 (2006.01)
Applicants: SEMELAB PLC [GB/GB]; Coventry Road, Lutterworth, Leicestershire LE17 4JB (GB) (For All Designated States Except US).
PULHAM, Richard, Jay [GB/GB]; (GB) (For US Only).
SOPPELSA, Michael [GB/GB]; (GB) (For US Only)
Inventors: PULHAM, Richard, Jay; (GB).
SOPPELSA, Michael; (GB)
Agent: A.A. THORNTON & CO.; 235 High Holborn, London WC1V 7LE (GB)
Priority Data:
9915451.0 01.07.1999 GB
Title (EN) IMPROVEMENTS IN AND RELATING TO TRIANGLE WAVE GENERATORS AND POWER AMPLIFIERS
(FR) AMPLIFICATEURS D'ONDE TRIANGULAIRE ET AMPLIFICATEURS DE PUISSANCE AMELIORES
Abstract: front page image
(EN)A power amplifier is provided with a novel triangle wave generator (4) in which a more precise triangle wave is produced with the aid of logic circuits. The resulting generator (4) is able to operate at higher frequencies. A fast current sensing arrangement is then required for protecting conditioning circuitry (40) against over-current. This is achieved with a combination of a sensing coil (20) sensing the transistor current through conductor (30). The resulting amplifier can be powered by DC and used to amplify a sine wave for DC to AC conversion.
(FR)L'invention concerne un amplificateur de puissance possédant un nouveau générateur d'onde triangulaire (4) dans lequel une onde triangulaire plus précise est produite à l'aide de circuits logiques. Le générateur obtenu (4) est capable de fonctionner à des fréquences supérieures. Un dispositif de détection de courant rapide est alors nécessaire pour protéger le circuit de conditionnement (40) contre la surcharge de courant. Ceci consiste à combiner une bobine de détection (20) détectant le courant de transistor à travers le conducteur (30). On peut alimenter l'amplificateur obtenu par courant continu et l'utiliser afin d'amplifier une onde sinusoïdale servant à convertir un courant continu en courant alternatif.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)