Abstract: A resistor-capacitor oscillator for receiving a current source, comprising a first switch path and a second switch path that are symmetric and connected in parallel. The first switch path comprises a signal output terminal and a first voltage output terminal. The second switch path comprises a complementary signal output terminal and the second voltage output terminal. One of these two voltage output terminals is selected randomly and input to both the first comparator and the second comparator simultaneously. The first comparator further receives a {fraction (1/2 )} VBG voltage, and the second comparator further receives 2VBG voltage. The first comparator outputs to a PMOS transistor, and the second comparator outputs to an NMOS transistor. The PMOS transistor is in series with the NMOS transistor, and is jointly coupled in between the system power supply and the ground voltage. Moreover, a latch and an inverter are serially coupled to the location of the serial junction node of these two transistors.

Abstract: A process for the preparation of a composition useful in telecommunications jacketing comprising: (i) introducing a polyolefin into the first mixing zone of a melt/mixer having first and second mixing zones; (ii) introducing particulate carbon black per se or a premix of said carbon black and polyolefin into the first mixing zone, said carbon black being in an amount of about 2 to about 50 percent based on the weight of the polyolefin introduced into the first mixing zone; (iii) melting the polyolefin in the presence of the carbon black in the first mixing zone; (iv) mixing the carbon black and the molten polyolefin in the first mixing zone to provide a molten mixture; (v) passing the molten mixture from step (iv) into the second mixing zone; (vi) adding sufficient polyolefin to the molten mixture from step (v) to dilute the carbon black to a level of about 2 to about 3 percent by weight based on the weight of the total polyolefin in the melt/mixer; (vii) mixing the added polyolefin with the molten mix

Abstract: A laser structure, coupled to a LED pump, has an unguided uniform gain element having two mirrors forming a Fabry-Perot cavity. The gain element is coupled to an input waveguide and an output waveguide, wherein the output waveguide has a greater mode field diameter than the input waveguide. The output waveguide may be a TEC fiber. The structure is coupled to a LED pump.

Abstract: A fragrance device for delivering a fragrance or other volatile material includes a fluid vessel containing a quantity of a fuel, a wick, and a porous emanator element which releases the fragrance or volatile material particularly when the wick is burning. Methods for the manufacture of the device, as well as methods for its use of are also disclosed.

Abstract: A grinder for polishing the outer surface of a work piece, comprising a power unit set in a machine base to carry a centrifugal disc to a centrifugalize grinding solution contained in a container for polishing work pieces therein. Elongated stop bars are longitudinally arranged on the inner wall surface of the container to stop the grinding solution centrifugalized by the centrifugal disc. Stirring bars are on the cap of the container for stirring the centrifugalized grinding solution. Stirring blades are provided on a rotary wheel, which is revolvably attached to the inner bottom of the cap, for agitating the centrifugalized grinding solution into turbulent flow so as to achieve better grinding performance.

Abstract: A grinder of the type comprising a grinding cylinder for containing liquid grinding compound and a centrifugal disc to centrifugalize said liquid grinding compound for performing grinding operation, the improvement including a grinding cylinder automatic lifting mechanism controlled by a timer to automatically drive a motor to drive a linkage to automatically lift said grinding cylinder from said centrifugal disc for discharging liquid grinding compound and processed working pieces out of said grinding cylinder. A water circulation system is provided to circulate clean water through said grinding cylinder for cleaning purpose.