About 21 results
https://drivepatents.com/patents/966362 · 10 Dec 2014
The present document relates to the charging of rechargeable batteries. In particular, the present document relates to the charging of battery stacks comprising a plurality of battery cells or storage cells. A system (120) configured to charge a first subs...
https://drivepatents.com/patents/970832 · 27 Aug 2014
This application relates a method and a control circuit (10) for determining a charge current of a battery (4) connected to a modulated load (2) is proposed, wherein a current limited power source (11) is connected in parallel to the modulated load (2) and...
https://drivepatents.com/patents/974614 · 21 May 2014
The present document relates to a driver circuit for a solid state light source. In particular, the present document relates to the start-up and/or the maintenance of a supply voltage for the integrated circuit of a driver circuit. A driver circuit (300) f...
https://drivepatents.com/patents/986902 · 11 Sep 2013
The present document relates to isolated electrical systems coupled e.g. by a transformer / inductor system, a piezo transformer, a capacitor or other isolation means. In particular, the present document relates to a method and system for communicating acr...
https://drivepatents.com/patents/994685 · 26 Dec 2012
Circuits and methods for current limited DC-to-DC converters having multiple power sources have been disclosed. One of multiple power sources is activated by a multiplexer (20). A current sensing unit (21), deployed close to the multiplexer, detects if an ...
https://drivepatents.com/patents/997081 · 17 Oct 2012
Circuits and methods providing a electronic power supply applicable to any dual supply rail systems, which require a smooth and uninterrupted output supply and a replica power path and autonomous mode of operation from the system power supply are disclosed...
https://drivepatents.com/patents/998802 · 5 Sep 2012
Circuits and methods to charge batteries of a portable device simultaneously with supplying power to the device for its operation, using a power source with limited maximum current, as e.g. an USB port, have been achieved. The system invented relies upon d...
https://drivepatents.com/patents/1001184 · 20 Jun 2012
Systems and methods using the same to achieve a multiple battery charger with automatic charge current adjustment have been disclosed. The invention maintains equilibrium of charge levels during charge and discharge between all of the multiple batteries (4...
https://drivepatents.com/patents/1012841 · 18 May 2011
Systems and methods for a front-end circuit receiving a current from a photodiode receiving a signal light and ambient light have been disclosed. In a preferred embodiment the front-end circuit accommodates a photo diode current, generated by a signal ligh...
https://drivepatents.com/patents/1073534 · 5 Oct 2005
A circuit and a method are given, to realize a very efficient driver device for igniters or squibs as used e.g. in airbag applications. Special attention has been turned to include secure and always reliable operating features into the device and at the sa...