| Title of Invention | SWITCHED-MODE POWER SUPPLY |
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| Abstract | A switched—mode power supply has a storage capacitor (Cl), a transformer (TR) with a primary winding and at least one secondary winding, and also a switching transistor (TI) which is connected in series with the primary winding. The primary winding is subdivided here into sub—windings (W1a, W1b) with at least one tap (A), and a capacitance (C1, C3) is in each case disposed in parallel with sub—windings, preferably with each sub- winding (W1a, W1b), as a damping network. The numbers at windinqs of the sub-windinqs and the capacitances of the capacitors disposed in parallel with the sub—windings are selected in such a way that the oscillations occurring when the switching transistor is deactivated have different resonant frequencies and thereby partially cancel each other out. This results in an effective damping of the deactivation voltage (U2) over the Switching transistor. Since the capacitors (C2, C3) are connected in series, the effective total capacitance is low, so that the resulting discharge current at the when the switching transistor (T1)becomes conductive comparably low. |
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445-cal-2001-granted-abstract.pdf
445-cal-2001-granted-assignment.pdf
445-cal-2001-granted-claims.pdf
445-cal-2001-granted-correspondence.pdf
445-cal-2001-granted-description (complete).pdf
445-cal-2001-granted-drawings.pdf
445-cal-2001-granted-examination report.pdf
445-cal-2001-granted-form 1.pdf
445-cal-2001-granted-form 18.pdf
445-cal-2001-granted-form 2.pdf
445-cal-2001-granted-form 26.pdf
445-cal-2001-granted-form 3.pdf
445-cal-2001-granted-form 5.pdf
445-cal-2001-granted-letter patent.pdf
445-cal-2001-granted-priority document.pdf
445-cal-2001-granted-reply to examination report.pdf
445-cal-2001-granted-specification.pdf
445-cal-2001-granted-translated copy of priority document.pdf
| Patent Number | 221896 | |||||||||
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| Indian Patent Application Number | 445/CAL/2001 | |||||||||
| PG Journal Number | 28/2008 | |||||||||
| Publication Date | 11-Jul-2008 | |||||||||
| Grant Date | 09-Jul-2008 | |||||||||
| Date of Filing | 14-Aug-2001 | |||||||||
| Name of Patentee | THOMSON LICENSING S. A. | |||||||||
| Applicant Address | 46 QUAI A. LE GALLO, F-92100 BOULOGNE-BILLANCOURT | |||||||||
Inventors:
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| PCT International Classification Number | H02M 3/28 | |||||||||
| PCT International Application Number | N/A | |||||||||
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