Abstract: Described herein is an apparatus (30) for regulating voltages across a plurality of loads (21, 23). The apparatus comprises a first linear regulator (35) for regulating a first voltage across a first load (23) and a second linear regulator (37) for regulating a second voltage across a second load (21). The apparatus also has a current recycling node (33) provided between an output of the second linear regulator (37) and an input of the first linear regulator (35) such that, in use, a total current drawn by the apparatus is less than a sum of a current flowing in the first load and a current flowing in the second load.

Abstract: A system for transferring data and power between electronic devices implanted in a patient is described. The system comprises a first unit and a second unit that in use are both implanted in the patient and a cable connecting the first unit and the second unit. The first unit comprises a current supply unit that supplies a selected current output to the second unit via the cable and a processor configured to anticipate an action to be performed by the second unit and to select the current output dependent on the anticipated action.

Abstract: A medical implant comprising a power source configured to generate a direct current (DC) signal, a first interface configured to convert the DC signal to an alternating current (AC) signal; and a DC power storage device. The implant also comprises a second interface configured to convert the AC signal received from the first interface via two interface connection lines to a DC signal, and configured to provide the DC signal to the power storage device via two storage connection lines, and wherein the second interface includes: at least one switch disposed between the two module connection lines and the two storage connection lines; and at least one switch controller configured to control the at least one switch to prevent the power storage device from being electrically connected to an opposite polarity of the power source.

Abstract: A body stimulating device operatively adapted to provide electrical stimuli within a body, the device including stimulating electrodes, stimulus generator, and electrode voltage sensors, said electrode voltage sensors operatively measuring the DC/LF voltage of the electrodes, wherein if the sensors determine that the electrode voltage for an electrode is outside a predetermined range, then a compensating current is applied to that electrode, so as to reduce the voltage.

Abstract: A method and system for charge imbalance compensation in a stimulating medical device is provided. The stimulating medical device includes at least one electrode contact configured for providing stimulation to a recipient. A charge imbalance compensation system in the stimulating medical device measures any residual charge remaining on the electrode contact that may result from an imbalance in the applied stimulation. If the measured residual charge exceeds a threshold, the charge imbalance compensation system causes a compensator current to be applied to reduce the residual charge. This residual charge may be measured by measuring a potential difference between the electrode contact and a reference electrode; or, by measuring a potential difference across a capacitor in-series with the electrode contact.

Abstract: This invention concerns interfacing to electronic circuits or systems operating at low temperature or ultra-low temperature using complementary metal-oxide semiconductor (CMOS) technology. Low temperature in this case refers to cryogenic temperatures in particular, but not exclusively, to the 4.2 K region. Ultra-low temperatures here refers to the sub-1 K range, usually accessed using dilution refrigerator systems. The electronic circuits comprise a controller (for writing and manipulation), an observer (for readout and measurement) circuits, or both, fabricated from ultra-thin silicon-on-insulator (SOI) CMOS technology.

Abstract: This invention concerns interfacing to electronic circuits or systems operating at low temperature or ultra-low temperature using complementary metal-oxide semiconductor (CMOS) technology. Low temperature in this case refers to cryogenic temperatures in particular, but not exclusively, to the 4.2 K region. Ultra-low temperatures here refers to the sub-1 K range, usually accessed using dilution refrigerator systems. The electronic circuits comprise a controller (for writing and manipulation), an observer (for readout and measurement) circuits, or both, fabricated from ultra-thin silicon-on-insulator (SOI) CMOS technology.