SWITCHING POWER SUPPLY

• US 20110176388A1
• Filed: 10/07/2009
• Published: 07/21/2011
• Est. Priority Date: 10/13/2008
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Bradshaw II, Michael C., Brock-Fisher, Tony
• Application Number:
  US13/119,647
• Publication Number:
  US 20110176388A1
• Time in Patent Office: Days
• US Class Current: 367/87
• CPC Class Codes: H02M 1/12 Arrangements for reducing harmonics from ac input or output
• CPC Class Codes: H02M 1/44 Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
• CPC Class Codes: Y10T 29/49005 Acoustic transducer

Abstract

The patent application describes a switching power supply, wherein the supply has a first output voltage, wherein the first output voltage was generated by a first working voltage with a first frequency and a first phase, wherein the supply is adapted to configure the first frequency and/or the first phase in such a way that disturbances m devices powered by the supply are reduced, wherein the disturbances are caused of electromagnetic interferences. In an embodiment the switching power supply is adapted to configure the first frequency in such a way that the first frequency and its harmonies are different from the operating frequency of the powered device.

Claims

1. An ultrasound system which comprises a switching power supply, wherein the supply has a first output voltage, wherein the first output voltage was generated by a first working voltage with a first frequency and a first phase, wherein the supply is adapted to configure the first frequency and/or the first phase in such a way that disturbances in devices powered by the supply are reduced, wherein the disturbances are caused of electromagnetic interferences;

and

an ultrasound device which operates at an operating Doppler frequency,

wherein the supply is adapted to configure the first frequency in such a way that the first frequency and harmonics thereof are different from the operating Doppler frequency.

4. The ultrasound system according to claim 1, wherein the supply has

a first output voltage, wherein the first output voltage was generated by a first working voltage with a first phase,

a second output voltage, wherein the second output voltage was generated by a second working voltage with a second phase, wherein the supply is adapted to control the first phase with respect to the second phase in such a way that the disturbances are reduced.

5. The ultrasound system according to claim 4, wherein the supply is adapted in such a way that the second working voltage is switched on after or in the moment the first working voltage is switched off.

6. A method for manufacturing the ultrasound system according to claim 1, comprising the step of adaption of the supply such that the first frequency and/or the first phase is configured in such a way that disturbances in devices of the system powered by the supply are reduced, wherein the disturbances are caused of electromagnetic interferences.

2-3. -3. (canceled)

7-12. -12. (canceled)