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1. (WO2007083075) A DRIVE CIRCUIT
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2007/083075 International Application No.: PCT/GB2006/004606
Publication Date: 26.07.2007 International Filing Date: 11.12.2006
Chapter 2 Demand Filed: 16.11.2007
IPC:
H02M 7/48 (2007.01) ,H02M 3/158 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42
Conversion of dc power input into ac power output without possibility of reversal
44
by static converters
48
using discharge tubes with control electrode or semiconductor devices with control electrode
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3
Conversion of dc power input into dc power output
02
without intermediate conversion into ac
04
by static converters
10
using discharge tubes with control electrode or semiconductor devices with control electrode
145
using devices of a triode or transistor type requiring continuous application of a control signal
155
using semiconductor devices only
156
with automatic control of output voltage or current, e.g. switching regulators
158
including plural semiconductor devices as final control devices for a single load
Applicants: CAUSIER, Stephen James[GB/GB]; GB (UsOnly)
DYSON TECHNOLOGY LIMITED[GB/GB]; Tetbury Hill Malmesbury Wiltshire SN16 0RP, GB (AllExceptUS)
Inventors: CAUSIER, Stephen James; GB
Agent: BONNER, Catherine L. ; Tetbury Hill Malmesbury Wiltshire SN16 0RP, GB
Priority Data:
0600868.417.01.2006GB
Title (EN) A DRIVE CIRCUIT
(FR) CIRCUIT D'EXCITATION
Abstract:
(EN) There is provided a drive circuit for a high-frequency agitation source (P1), the drive circuit comprising signal generating means (1) for generating a train of low voltage square-wave pulses (S2) at a drive frequency, boost means (2) including a boost inductor (L1) for generating a back EMF, the boost means (2) being arranged to produce a high-voltage pulse train (S3) in response to the low-voltage square-wave pulse train (S2) and filter means (3) for producing a drive signal (S4) having a pre-determined harmonic of the drive frequency, the drive signal (S4) being used to drive the high-frequency agitation source (P1). The drive circuit is particularly suitable for use with piezoelectric crystals.
(FR) La présente invention concerne un circuit d'excitation destiné à une source d'agitation haute fréquence (P1). Le circuit d'excitation comprend un moyen de génération de signal (1) qui génère un train d'impulsions d'onde carrée basse tension (S2) à une fréquence d'excitation, un moyen d'amplification (2) comprenant un inducteur d'amplification (L1) servant à générer une force contre-électromotrice, le moyen d'amplification (2) étant prévu pour produire un train d'impulsions haute tension (S3) en réponse au train d'impulsions d'onde carrée basse tension (S2) et un moyen de filtre (3) servant à produire un signal d'excitation (S4) ayant une harmonique prédéterminée de la fréquence d'excitation, le signal d'excitation (S4) étant utilisé pour exciter la source d'agitation haute fréquence (P1). Ce circuit d'excitation est particulièrement approprié pour être utilisé avec des cristaux piézoélectriques.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, 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, LV, LY, MA, MD, 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, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, 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)