Abstract:
The regulator circuit with an auxiliary boundary regulator that provides enhanced transient response includes: an upper comparator 24 having a first input coupled to a feedback node and a second input coupled to a first reference voltage node V_HIGH; a lower comparator 26 having a first input coupled to the feedback node and a second input coupled to a second reference voltage node V_LOW; a first switching device 30 having a control node coupled to an output of the upper comparator 24; a second switching device 28 having a control node coupled to an output of the lower comparator 26; an inductor 36 having a first end coupled to the first and second switching devices 28 and 30, and a second end coupled to an output node Vout; and a feedback circuit 32 and 34 coupled between the output node Vout and the feedback node. This circuit provides a precise, quiet, linear regulator that provides a tightly regulated output with a fast regulator working in parallel to ensure that the output voltage stays within an acceptable boundary.
Abstract:
A composition is provided which is useful for the polishing of a semiconductor wafer substrate comprising an organic polymer having a backbone comprised of at least 16 carbon atoms, the polymer having a plurality of moieties with affinity to surface groups on the semiconductor wafer surface. Another composition is provided which is useful for the polishing of a semiconductor wafer substrate comprising a surfactant having a carbon chain backbone comprised of at least 16 carbon atoms.
Abstract:
Method for laser machining explosives and related articles. A laser beam is directed at a surface portion of a mass of high explosive to melt and/or vaporize the surface portion while directing a flow of gas at the melted and/or vaporized surface portion. The gas flow sends the melted and/or vaporized explosive away from the charge of explosive that remains. The method also involves splitting the casing of a munition having an encased explosive. The method includes rotating a munition while directing a laser beam to a surface portion of the casing of an article of ordnance. While the beam melts and/or vaporizes the surface portion, a flow of gas directed at the melted and/or vaporized surface portion sends it away from the remaining portion of ordnance. After cutting through the casing, the beam then melts and/or vaporizes portions of the encased explosive and the gas stream sends the melted/vaporized explosive away from the ordnance. The beam is continued until it splits the article, after which the encased explosive, now accessible, can be removed safely for recycle or disposal.
Abstract:
The subject invention provides novel compositions of biologically active discodermolide compounds which can advantageously be used for immunomodulation and/or treating cancer. The compounds of the subject invention have utility for use in the treatment of cancer, as tubulin polymerizers and as microtubule stabilization agents. The present invention also pertains to the identification of regions of the discodermolide molecule which are responsible for certain aspects of the bioactivity of discodermolide compounds.
Abstract:
A controlled area network (CAN) driver provides improved symmetry between its differential output signals CAN-H and CAN-L, and provides protection for its low voltage devices from voltage transients occurring on its output lines. A plurality of CAN drivers 80 are serially interconnected to form a driver system, wherein each downstream driver stage receives a time-delayed form of the digital input signal TxD, each stage providing a time-delayed contribution to the differential output signals of the overall driver system.
Abstract:
A secured network system comprising a readykey controller which has a first card reader and a power relay switch connected thereto. The user of the stem inserts a microchip embedded card into the first card reader which then transmits an authorization signal to the readykey controller. The readykey controller then activates a power relay switch affixed to the computer which connects the computer's power supply to an external power source activating the computer. The secured network system also has a data relay switch which includes a manual A/B secured network switch. The manual A/B switch allows the user to receive and process classified data, by setting the switch to a predetermined position which connects a secured network server to the computer. The user inserts his proximity card into a second card reader which transmits a second authorization signal to the readykey controller. The readykey controller, responsive to the second authorization signal, activates the data relay switch. Activating the data relay switch connects the secured network switch to the secured network server via the data relay switch which allows for the transmission of classified data between the secured network server and the personal computer.
Abstract:
A magnetic gripper provides a support for releasable attachment to a ferromagnetic surface. A magnet adheres the gripper to the ferromagnetic surface. A frame is rotatably attached to the magnet where the frame defines cam surfaces to raise and lower the magnet from the ferromagnetic surface. An ear extends from the magnet to engage the ferromagnetic surface at a location spaced from the cam surfaces so that an end of the magnet near the ear can be first disengaged from the ferromagnetic surface, causing an air gap between the magnet and the ferromagnetic surface. The remainder of the magnet is sequentially disengaged from the surface as the cam surface is rotated. A foot support may be rotatably mounted to the frame so that a user can stand on the gripper to perform maintenance and repairs on the structure defined by the ferromagnetic surface.
Abstract:
The device has a semiconductor chip having active circuitry in the face thereof. The circuitry has busing over it containing two conductive layers having a plurality of contacts and vias with spacings between them that alternate with respect to one another to provide current ballasting and improved switching uniformity. The spacings between the alternating contacts and vias provide regions of maximum conductor thickness and therefore reduces the busing resistance. Staggering the rows of alternating contacts and vias provides further current ballasting. A first conducting layer is used to contact and provide electrically isolated low resistive conducting paths to the various semiconductor regions while the second conducting region is used to provide selective contact to the first conductive layer, thus providing a means of busing large currents over active semiconductor area without sacrificing performance parameters.
Abstract:
A shared spectrum communications unit and system provides communications without interfering with incumbent point-to-point receivers. This system includes a transmitter (e.g., of a PCS device) and a geographical location device which is operatively associated with the transmitter. The geographical locating device determines the position of the transmitter, and provides position information to a frequency authorization device. Geographical information pertaining to the PCS device is compared with the locations of the incumbent point-to-point receivers, using a database of the frequency authorization device including the locations of the point-to-point receivers, and a frequency allocation/authorization is generated to the PCS device when the PCS device is located outside of a predetermined range associated with local point-to-point receivers. An authorized frequency is stored and employed by the frequency authorization device for control of the operating frequency of the PCS device.
Abstract:
A voltage level shifting circuit (FIG. 4) has a plurality of PMOS transistors M.sub.1, M.sub.2, M.sub.3 connected in parallel for respectively driving a capacitive load C.sub.L with a selected different voltage level V.sub.1, V.sub.2 or V.sub.3. Transistors M.sub.1, M.sub.2, M.sub.3 are controlled so that one of them is placed in the ON condition, with the others in the OFF condition, to connect one of the voltages V.sub.1, V.sub.2 or V.sub.3 to charge the load CL. The largest voltage transistor M.sub.3 has its body connected to its source. The lower voltage transistors M.sub.1, M.sub.2 have their bodies respectively connected to switches S.sub.1, S.sub.2, which connect the bodies to the sources when the transistors are placed in the ON condition and connect the bodies to the highest voltage V.sub.3 when the transistors are placed in the OFF condition.