Abstract: A phase-locked loop comprises a voltage controlled oscillator. The voltage controlled oscillator comprises an inductor and a capacitor, connected in parallel, and also connected in parallel therewith, a negative resistance structure. A first terminal of the negative resistance structure is connected to respective first terminals of the inductor and the capacitor. A second terminal of the negative resistance structure is connected to respective second terminals of the inductor and the capacitor. The negative resistance structure exhibits a tunable capacitance, such that a frequency of an output of the voltage controlled oscillator can be tuned by a control input signal, and the control input signal is generated in the phase-locked loop. The negative resistance structure comprises first and second transistors.

Abstract: Method for separating a volume of composite liquid into at least a first component and a second component including centrifuging a separation bag containing a volume of composite liquid and a volume of gas so as to sediment at least a first component and a second component separation bag; displacing a volume of hydraulic fluid against the separation bag to cause a transfer of at least one fraction of the content of the separation bag into at least one component bag connected to the separation bag; determining the volume of hydraulic fluid displaced and determining the volume of the composite liquid or the transferred components from the determined volume of displaced hydraulic fluid.

Abstract: A method used in connection with processing of blood components, wherein blood products are then filtered via a filter rotating along with a centrifuge rotor and the sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products.

Abstract: A method used in connection with processing of blood components, wherein blood products are then filtered via a filter rotating along with a centrifuge rotor and the sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products.

Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.

Abstract: Method and apparatus for separating a volume of composite liquid into at least a first component and a second component including centrifuging a separation bag containing a volume of composite liquid and a volume of gas so as to sediment at least a first component and a second component separation bag; displacing a volume of hydraulic fluid against the separation bag to cause a transfer of at least one fraction of the content of the separation bag into at least one component bag connected to the separation bag; determining the volume of hydraulic fluid displaced and determining the volume of the composite liquid or the transferred components from the determined volume of displaced hydraulic fluid.

Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.

Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.

Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.

Abstract: In a set of devices for transferring electric signals, devices according to at least two different designs are provided. Each device comprises a bus and a connector providing electrical and mechanical connection of the bus to a bus of another of the devices. Each device further includes terminals for external connection of the device to electrical arrangements, for signal exchange with the electrical arrangements. Each device further includes a signal adapting module electrically connected to the bus and to the terminals. The different designs of the devices allow sets of devices to be combined in a way which utilizes space efficiently.

Abstract: A device for transferring electric signals comprises a first unit having a bus and electrical and mechanical interconnections of this bus and a bus of another device at at least one side of the unit. A second unit has terminals electrically connected to the bus for external connection of the device to, and signal exchange with, electrical arrangements. The device further comprises two different carriers on which the bus unit and the terminal unit, respectively, are arranged, and members for releasable mechanical connection of the two carriers to each other, and adapted to allow separation of the terminal unit from the bus unit with maintained connection thereof to the bus unit of an adjacent device.

Abstract: A method and apparatus for generating a current corresponding to a quantity supplied to the device, for example an analog current output device for a digitally working process control system, using two parallel-working current-generating means, each one connected to a current summation means; the current-generating means are each adapted to generate a current proportional to the quantity and the proportionality being determined by a changeable proportionality factor. Each one of the current-generating means being adapted to supervise both its own function and that of the other means. Upon indication of a malfunction in one of the means, the function of the device is taken over by the other means alone.

Abstract: Electrical equipment has its components mounted on a plurality of circuit cards. The communication to and from the cards, the supply of supply voltages, etc., take place via conductors arranged on a connection device. The circuit cards are connected to the conductors by means of contact devices. At least some of the conductors are interrupted at each contact device on the connection device. Some of the cards, are slave cards, and are provided with means for bridging the interruptions, whereas others, the main cards, have no such bridging means. By plugging an optional number of slave cards into the connection device immediately adjacent to a main card, a functional unit is formed at an arbitrary location on the connection device. The conductors provided with interruptions form a local bus for internal communication within a multi-card functional unit.