摘要:
This invention relates to a nulling current transformer. More particularly, this invention relates to a nulling current transformer for accurately detecting current and giving an improved response, accuracy and stability using toroidal current transformer technology along with active components. This invention finds particular application in switchgear devices such as residual current devices and metering operations. The nulling current transformer is implemented in a closed magnetic core having at least one primary winding inductively coupled thereto. A secondary winding is also inductively coupled to said magnetic core, the secondary winding being responsive to any magnetic flux generated in said magnetic core. A separate tertiary winding is also inductively coupled to said magnetic core, the tertiary winding being responsive to any magnetic flux generated in the magnetic core. A nulling means is also provided for receiving the output of said tertiary winding and nulling the received output, the nulled output of the nulling means being connected to the input of said secondary winding such that it serves to cancel the magnetic flux in the magnetic core.
摘要:
A residual current device (RCD) protects a circuit by tripping in response to an imbalance signal representative of residual current imbalance in the circuit. The RCD trips the circuit when the imbalance signal exceeds a predetermined threshold rating. The RCD includes a sense coil for generating the imbalance signal and a test coil for introducing a simulation residual current imbalance into the device so as to increase the imbalance signal. A processor monitors the imbalance signal and determines the simulation residual current imbalance required to increase the imbalance signal to a level that corresponds to the predetermined threshold rating so that the sense coil senses the sum of any residual current imbalance in the circuit being protected and the simulation residual current imbalance in order to test operation of the RCD against the predetermined threshold rating.
摘要:
There are provided antigens, vectors encoding the antigens, and antibodies and other binding compounds to the antigens and uses thereof in the prevention or treatment of malaria. In particular, compositions are provided comprising a Reticulocyte-binding protein Homologue 5 (PfRH5) antigen having at least 90% identity with SEQ ID NO: 1, or a fragment thereof; or which comprise a viral vector that expresses PfRH5 antigen having at least 90% identity with SEQ ID NO: 2, or a fragment thereof.
摘要翻译:提供的抗原,编码抗原的载体,以及针对抗原的抗体和其它结合化合物及其在预防或治疗疟疾中的用途。 特别地,提供了包含与SEQ ID NO:1具有至少90%同一性的网织红细胞结合蛋白同源物5(PfRH5)抗原或其片段的组合物; 或其包含表达与SEQ ID NO:2具有至少90%同一性的PfRH5抗原或其片段的病毒载体。
摘要:
A paper feed system for use in a printing apparatus that detects multi-feeds and separates all sheets while allowing a single sheet to continue into the machine includes a nip with a drive roller for feeding sheets. A reversible pressure roller downstream of the drive roller is connected to a motor, but idles in the direction of the paper feed in normal operation. When a multi-feed is detected, the motor is turned ON and the reversible pressure roll actuated by a controller. The reversible pressure roller has more friction with the sheet in its contact than the friction between sheets. This drives the sheet in contact backwards. This sheet can be diverted to a separate paper path using a gate mechanism and, if desired, fed back into the feed path.
摘要:
A paper feed system for use in a printing apparatus that detects multi-feeds and separates all sheets while allowing a single sheet to continue into the machine includes a nip with a drive roller for feeding sheets. A reversible pressure roller downstream of the drive roller is connected to a motor, but idles in the direction of the paper feed in normal operation. When a multi-feed is detected, the motor is turned ON and the reversible pressure roll actuated by a controller. The reversible pressure roller has more friction with the sheet in its contact than the friction between sheets. This drives the sheet in contact backwards. This sheet can be diverted to a separate paper path using a gate mechanism and, if desired, fed back into the feed path.
摘要:
A control system for a vehicle, the vehicle including an engine, a variable transmission for varying the transmission ratio between an output member of the engine and a ground engaging drive apparatus, the control system including at least one control apparatus which is operative to provide inputs to a controller, the controller being responsive to inputs from the control apparatus when the control system is operating in a first operating mode, to provide output signals to vary the engine speed, and when the control system is operating in a second operating mode, to provide output signals to vary the transmission ratio without changing the engine speed, and a mode selector control whereby an operator may select the first or second operating mode.
摘要:
Automated methods for processing a cash advance and/or a check cashing transaction using an ATM entail obtaining identification information for a user; producing an image of each side of an original check for the transaction; accessing a database of financial transactions to determine if the transaction has an unacceptable risk; voiding the original check and returning the voided check to the user; producing a cash (debit) card and corresponding account for a principal amount for the user; and communicating the image of each side of the original check to a settlement service provider via a communications network on a maturity date.
摘要:
An array in which an external control feature for normalization has been designed and tested for its ability to mimic the range of observed expression levels for a test set of oligos. The external control probes span a series of concentrations. They are spatially randomized across a grid of an array. The series of concentrations is duplicated in a given grid. The individual grid layout and number of control and external normalization features per grid have been designed to cope with sources of both systematic error and spatial variation.
摘要:
A series of novel alkoxypyridin-4-yl and alkoxypyrimidin-4-yl derivatives of indol-3-ylalkylpiperazines of Formula I are intended to be useful agents ##STR1## for alleviation of vascular headache on the basis of their potent affinity and agonist activity at 5-HT1D binding sites.
摘要:
A device for rapidly securing and obscuring footwear laces includes a strap having a cinching device such as a cord lock; a plurality of tubular lace restraints along the length of the strap; and a means for connecting one end of the strap to the other, so as to secure the device around a wearer's ankle with the laces obscured beneath. Laces travel the majority of the length of the strap, and can stay engaged with the laces even when footwear is not being worn. A user can insert foot into footwear, tighten laces by pulling on ends, cinch laces in tightened position by engaging cinching device, wrap strap with laces around ankle, and secure in place around ankle or ankle of footwear.