Abstract: An ultracapacitor module is disclosed. The ultracapacitor module comprises: an enclosure, and a plurality of ultracapacitors housed within the enclosure wherein at least one ultracapacitor of the plurality of ultracapacitors is secured to the enclosure. The ultracapacitor module satisfies one or more of the following conditions upon being subjected to a vibration profile in accordance with ISO 16750-3-2012, Table 12 and IEC 60068-2-64: a capacitance within a rated capacitance value as determined in accordance IEC 62391-1, Method 1A, an equivalent series resistance within a rated equivalent series resistance value as determined in accordance IEC 62391-1, a leakage current within a rated leakage current value as determined in accordance IEC 62391-1, an operating voltage with a rated operating voltage value.

Abstract: A medical sensor patch connector assembly can include a medical patch having a first side, a second side opposite the first side, and a hole connecting the first side and the second side. The medical sensor patch connector assembly can include a connector including a first clamping member having a first contact surface in contact with the first side of the medial patch and a tab protruding through the hole in the medical patch. The connector can include a second clamping member having a second contact surface in contact with the second side of the medical patch.

Abstract: An ultracapacitor module is disclosed. The ultracapacitor module comprises: an enclosure, and a plurality of ultracapacitors housed within the enclosure wherein at least one ultracapacitor of the plurality of ultracapacitors is secured to the enclosure. The ultracapacitor module satisfies one or more of the following conditions upon being subjected to a vibration profile in accordance with ISO 16750-3-2012, Table 12 and IEC 60068-2-64: a capacitance within a rated capacitance value as determined in accordance IEC 62391-1, Method 1A, an equivalent series resistance within a rated equivalent series resistance value as determined in accordance IEC 62391-1, a leakage current within a rated leakage current value as determined in accordance IEC 62391-1, an operating voltage with a rated operating voltage value.

Abstract: A method for monitoring one or more characteristics of an ultracapacitor is provided. The method includes obtaining a plurality of voltage measurements. Each of the voltage measurements can be obtained sequentially at one of a plurality of intervals. Furthermore, each of the voltage measurements can be indicative of a voltage across the ultracapacitor. The method can include determining an actual voltage step of the ultracapacitor based on two consecutive voltage measurements of the plurality of voltage measurements. The method can further include determining whether the actual voltage step exceeds a threshold voltage step of the ultracapacitor. Furthermore, in response to determining the actual voltage step exceeds the threshold voltage, the method can include providing a notification associated with performing a maintenance action on the ultracapacitor.

Abstract: A multilayer ceramic radiofrequency mixer can include a first termination, a second termination, a third termination, and a fourth termination. A plurality of interleaved electrodes may include a first set of electrodes connected with the first termination, a second set of electrodes connected with the second termination, a third set of electrodes connected with the third termination, and a fourth set of electrodes connected with the fourth termination. A plurality of dielectric layers may be disposed between respective electrodes of the pluralities of interleaved electrodes. A dielectric constant of the plurality of dielectric layers may vary less than 10% in response to a DC bias voltage applied to the plurality of interleaved electrodes.

Abstract: An ultracapacitor module is disclosed. The ultracapacitor module comprises: an enclosure, and a plurality of ultracapacitors housed within the enclosure wherein at least one ultracapacitor of the plurality of ultracapacitors is secured to the enclosure. The ultracapacitor module satisfies one or more of the following conditions upon being subjected to a vibration profile in accordance with ISO 16750-3-2012, Table 12 and IEC 60068-2-64: a capacitance within a rated capacitance value as determined in accordance IEC 62391-1, Method 1A, an equivalent series resistance within a rated equivalent series resistance value as determined in accordance IEC 62391-1, a leakage current within a rated leakage current value as determined in accordance IEC 62391-1, an operating voltage with a rated operating voltage value.

Abstract: A controller and system for tuning a voltage tunable capacitor is provided. The controller may include at least one analog-to-digital converter configured to receive at least one input signal and convert the at least one input signal into at least one digital signal. The controller may include a processor configured to process the at least one digital signal using logic to generate an output signal. The controller may include a charge pump configured to boost the output signal to generate a boosted output signal. The controller may be configured to provide the boosted output signal to the voltage tunable capacitor to adjust a bias voltage of the voltage tunable capacitor.

Abstract: A medical sensor patch connector assembly can include a medical patch having a first side, a second side opposite the first side, and a hole connecting the first side and the second side. The medical sensor patch connector assembly can include a connector including a first clamping member having a first contact surface in contact with the first side of the medial patch and a tab protruding through the hole in the medical patch. The connector can include a second clamping member having a second contact surface in contact with the second side of the medical patch.

Abstract: A system for balancing ultracapacitors is provided. The system includes a balancing capacitor and a plurality of switching devices. The system further includes a control circuit. The control circuit is communicatively coupled to each of the plurality of switching devices. The control circuit is configured to control operation of a first pair of the switching devices to couple the balancing capacitor across a first ultracapacitor of a plurality of ultracapacitors to transfer electrical charge from the first ultracapacitor to the balancing capacitor. The control circuit is further configured to control operation of a second pair of the switching devices that is different than the first pair to couple the balancing capacitor across a second ultracapacitor of the plurality of ultracapacitors to transfer at least a portion of the electrical charge from the balancing capacitor to the second ultracapacitor.

Abstract: A method for monitoring one or more characteristics of an ultracapacitor is provided. The method includes obtaining a plurality of voltage measurements. Each of the voltage measurements can be obtained sequentially at one of a plurality of intervals. Furthermore, each of the voltage measurements can be indicative of a voltage across the ultracapacitor. The method can include determining an actual voltage step of the ultracapacitor based on two consecutive voltage measurements of the plurality of voltage measurements. The method can further include determining whether the actual voltage step exceeds a threshold voltage step of the ultracapacitor. Furthermore, in response to determining the actual voltage step exceeds the threshold voltage, the method can include providing a notification associated with performing a maintenance action on the ultracapacitor.

Abstract: An ultracapacitor assembly is provided. The ultracapacitor assembly includes a plurality of ultracapacitors. The ultracapacitor assembly further includes a first bus bar and a second bus bar. The second bus bar is spaced apart from the first bus bar. The ultracapacitor assembly includes a discharge resistor coupled between the first bus bar and the second bus bar. The ultracapacitor assembly further includes a first plurality of switching devices and a second plurality of switching devices. Each switching device in the first plurality of switching devices is coupled between the first bus bar and a corresponding ultracapacitor of the plurality of ultracapacitors to selectively couple the corresponding ultracapacitor the discharge resistor via the first bus bar. Each switching device in the second plurality of switching devices is coupled between the second bus bar and a corresponding ultracapacitor to selectively couple the corresponding ultracapacitor the discharge resistor via the second bus bar.

Abstract: Balancing circuits for an ultracapacitor module are provided. In some implementations, the balancing circuit can include a regulator having an input. The regulator can be configured to compare an input voltage associated with the ultracapacitor received at the input to a reference voltage and to provide an output via an output node. The balancing circuit can further include a switching circuit coupled to the regulator. The switching circuit can be configured to discharge the ultracapacitor based at least in part on the output of the regulator. The switching circuit can include at least one semiconductor switching element operated in a hard switching manner during operation of the switching element.

Abstract: A controller and system for tuning a voltage tunable capacitor is provided. The controller may include at least one analog-to-digital converter configured to receive at least one input signal and convert the at least one input signal into at least one digital signal. The controller may include a processor configured to process the at least one digital signal using logic to generate an output signal. The controller may include a charge pump configured to boost the output signal to generate a boosted output signal. The controller may be configured to provide the boosted output signal to the voltage tunable capacitor to adjust a bias voltage of the voltage tunable capacitor.

Abstract: Balancing circuits for an ultracapacitor module are provided. In some implementations, the balancing circuit can include a regulator having an input. The regulator can be configured to compare an input voltage associated with the ultracapacitor received at the input to a reference voltage and to provide an output via an output node. The balancing circuit can further include a switching circuit coupled to the regulator. The switching circuit can be configured to discharge the ultracapacitor based at least in part on the output of the regulator. The switching circuit can include at least one semiconductor switching element operated in a hard switching manner during operation of the switching element.

Abstract: A module comprises at least two ultracapacitors and at least one balancing circuit. The balancing circuit is connected to a heat dissipation component. The heat dissipation component is present on a heat sink comprising a metal.

Abstract: Disclosed is methodology and apparatus for producing an asymmetrical filter for use with implantable medical devices, and in other input filtering environments. Differing forward and reverse characteristic responses are provided by inserting a low value resistor in series with heart connecting leads so that EMI input protection may be provided without significantly reducing energy transfer from the protected device. Improved protection against voltage transients is provided with present arrangements of differentiated series impedance. Higher frequency energy is allowed out of a subject device than is allowed into such device, which allows for attenuation of undesired frequency ranges entering the filter while allowing output pulses to exit without distortion.