An electronic determination device for determining at least one characteristic parameter of a connection set connected between a converter and an electric machine; the converter comprising at least two output terminals and, for each output terminal, a switching branch including at least one converter switch; the connection set comprising a filter connected to the output terminals and a cable connected between the filter and the electric machine; the filter including, for each output terminal, a respective electromagnetic coil connected to said output terminal and a respective capacitor connected to said coil; the determination device comprising: for each output terminal, a device switch configured to be connected to the respective capacitor; a generation module configured to generate a voltage pulse through the connection set, by controlling the converter switches and each device switch; an acquisition module configured to acquire measurements of respective current(s) and voltage(s) through the filter, further to the generation of the respective voltage pulse; and a calculation module configured to calculate at least one characteristic parameter of the connection set according to the respective current(s) and voltage(s) measurements.

Disclosed are devices, systems and methods for assessing the integrity of electrical connections between elements of interfacing electronic devices. In some aspects, a system includes an analysis device having electronics that interface with an assay cartridge inserted into the analysis device, wherein the analysis device is configured to conduct a preflight test in which impedance values for each circuit between the assay cartridge and analysis device are rearranged and assessed to determine the electrical connection integrity of the assay cartridge to the analysis device prior to implementing the assay.

Disclosed are devices, systems and methods for assessing the integrity of electrical connections between elements of interfacing electronic devices. In some aspects, a system includes an analysis device having electronics that interface with an assay cartridge inserted into the analysis device, wherein the analysis device is configured to conduct a preflight test in which impedance values for each circuit between the assay cartridge and analysis device are rearranged and assessed to determine the electrical connection integrity of the assay cartridge to the analysis device prior to implementing the assay.

A circuit device includes an HS driver that is a USB HS-mode transmission circuit and a disconnection detection circuit that performs disconnection detection of USB. The disconnection detection circuit includes a holding circuit that measures and holds first voltage level information that is voltage level information of one signal out of a DP signal and a DM signal of the USB when the HS driver is transmitting a host chirp, a determination voltage generation circuit that generates a first determination voltage based on the first voltage level information, and a detection circuit that performs disconnection detection of the USB based on the first determination voltage and outputs a disconnection detection signal.

A circuit device includes an HS driver that is a USB HS-mode transmission circuit and a disconnection detection circuit that performs disconnection detection of USB. The disconnection detection circuit includes a holding circuit that measures and holds first voltage level information that is voltage level information of one signal out of a DP signal and a DM signal of the USB when the HS driver is transmitting a host chirp, a determination voltage generation circuit that generates a first determination voltage based on the first voltage level information, and a detection circuit that performs disconnection detection of the USB based on the first determination voltage and outputs a disconnection detection signal.

System and methods for operating a portable device. The methods comprise: detecting, by a voltage monitor circuit, an output voltage of an external battery; providing a single output signal from the voltage monitor circuit to a function selector of the portable device, where the single output signal has a variable voltage value; and using, by the function selector, a current voltage level of the single output signal to determine whether the external battery is connected to the portable device and determine whether a reverse polarity connection exists between the external battery and the portable device.

A detector includes a board with a connector, a measurement resistor, a switch, and circuitry. The board with the connector is coupled to an external board. The measurement resistor is connected to the connector. The switch is connected to the measurement resistor and switches on and off an electric current flowing thorough the measurement resistor. The circuitry measures a potential difference between both ends of the measurement resistor, and determines, based on the potential difference measured, a coupling state of the external board with respect to the connector. The circuitry controls the switch to switch on and off the electric current flowing through the measurement resistor.

A detector includes a board with a connector, a measurement resistor, a switch, and circuitry. The board with the connector is coupled to an external board. The measurement resistor is connected to the connector. The switch is connected to the measurement resistor and switches on and off an electric current flowing thorough the measurement resistor. The circuitry measures a potential difference between both ends of the measurement resistor, and determines, based on the potential difference measured, a coupling state of the external board with respect to the connector. The circuitry controls the switch to switch on and off the electric current flowing through the measurement resistor.

Embodiments of the present invention provide a power supply module and a soft start method. The power supply module includes an input detection circuit configured to output a first notification signal to a trigger drive circuit when it is determined that the power supply module receives a power supply signal; the trigger drive circuit configured to, upon receipt of the first notification signal sent from the input detection circuit, wait for a predetermined duration without sending a drive signal to a current limiting circuit, and to send the driver signal to the current limiting circuit when the predetermined duration elapses; and the current limiting circuit configured to limit a current on a Direct Current (DC) bus of the power supply module when the drive signal is not received by the current limiting circuit, and not to limit the current on the DC bus upon receipt of the drive signal.

A calibration method includes transmitting first data comprising a calibration data and a first checksum to the storage device according to each of a plurality of training parameter sets; recording a plurality of error indicators respectively which are corresponding to the plurality of training parameter sets and from the storage device; and identifying one of the plurality of training parameter sets as a predetermined parameter set according to the plurality of error indicators respectively corresponding to the plurality of training parameter sets; wherein each error indicator indicates whether transmitting the first data according to the corresponded training parameter set is successful.