An amplifier (50) having an input and output stage for providing drive current to a load (RL) coupled thereto includes circuitry (42, 44, 46, 52) that senses when an input signal is applied to the amplifier and is responsive thereto for providing an enabling signal at an output thereof and current regulator circuitry (20, 22) that supplies a low drain current to bias the stages when the amplifier ...

PURPOSE: To improve the extent of assembly operation properties in making each constituent member lighter in weight and simple in structure as well as to promote a reduction in noise to be produced out of an engine and a generator. CONSTITUTION: A generator 21 and an engine 22 are attached to the top of a base box 12, and a soundproof-fan duct box 25 attached with a radiator 20 is attached to a re...

A wear and erosion resistant coating for substrates having a non-nitrogen titanium-containing outer surface onto which a non-stoichiometric titanium nitride coating is deposited in which the nitrogen content in the titanium nitride coating is from 32.5 to 47 atomic weight percent.

A process for the production of polypropylene comprising continuously contacting liquid propylene or a mixture comprising liquid propylene and one or more other alpha-olefins in one or more reaction zones, under gas phase polymerization conditions, with a catalyst system comprising (i) a solid particulate catalyst precursor, which includes magnesium; titanium; a halogen which is chlorine, bromine,...