摘要:
A heat dissipation fan includes a housing, a first rotor, a second rotor, a base and a plurality of static blades. The first rotor has a shaft and a plurality of rotor blades. The second rotor is coupled to the first rotor and has a plurality of rotor blades. The base is disposed in the housing for supporting the first and second rotors. The static blades are disposed between the housing and the base, wherein a rear portion of each static blade extends along an axial line of the heat dissipation fan for improving the working efficiency of the second rotor.
摘要:
A high pressure tank installed in an emulsifier and connected between a bubble generator and a water pipe to receive a liquid from a water pump for enabling the liquid to be delivered to the bubble generator for making bubbles, the high pressure tank having a venturi tube extended from one side thereof to the water pipe for enabling a part of the liquid to be guided out of the high pressure tank to the water pipe for circulation, and an air valve installed in the venturi tube for enabling outside air to be drawn into the venturi tube to mix with the liquid passing through.
摘要:
A cellular telephone mobile unit position determining method which utilizes a plurality of range transceivers located at known fixed locations adapted to transmit approximately synchronized digital range signals. The method is especially adapted to determine the position of a cellular mobile unit within cellular service areas for determining billing charges and/or access restrictions. According to the invention, the fixed position range transceivers transmit range signals which are received by a mobile unit. The mobile unit determines either the time difference of arrival or absolute time of arrival of the range signals, which in turn is used to determine the mobile unit's position for cellular billing and/or access restriction purposes. The range transceivers are operable to receive an error signal and correspondingly adjust the output of the next transmitted range signal so as to drive the detected synchronization error to approximately zero.
摘要:
A position system and method utilizes a plurality of range transceivers located at known fixed locations and which are adapted to transmit approximately synchronized digital range signals for receipt by both a primary receiver and a supplemental receiver, the former disposed at a known location and the latter disposed at an unknown location. The range transceivers are adapted to transmit pulse sequences which include an error portion corresponding to the approximate synchronization error of each range signal. This error portion is constantly updated in accordance with the last determined synchronization errors of the corresponding range signals received by a secondary transceiver. In an alternative embodiment employing Code Division Multiple Access (CDMA) technology, the range transceiver time stamp on transmitted range signals may be adjusted to account for the measured timing error for a given range transceiver. The supplemental receiver receives the range signals and uses the same in accordance with known time of arrival or time difference of arrival calculation techniques to determine the position of the supplemental receiver.
摘要:
The present invention provides a fan including a stator and a rotor coupled to the stator. The stator has a base and a bearing disposed inside the base. The rotor has a shaft supported by the bearing. Furthermore, the shaft has a concave structure formed on a surface thereof, or the bearing has a groove structure formed on a surface thereof.
摘要:
A panel assembly includes multiple base boards, multiple cover panels, multiple shelves and multiple accessories so as to be fixed to a wall. The multiple base boars and the multiple cover panels define a path, a space and a gap. The path, the space and the gap communicate with each other. Sand the shelves or the accessories are inserted into the path, the space and gap. The panel assembly can be quickly assembled and replaced to change the arrangements and suitable for decoration and display or storage.
摘要:
A method for programming a multi-level nitride storage memory cell capable of storing different programming states corresponding to multiple different threshold voltage levels includes providing a variable resistance capable of providing a plurality of different resistance values; connecting a drain side of the nitride storage memory cell to a selected one of the plurality of resistance values that corresponds to one of the multiple threshold voltage levels; and programming the nitride storage memory cell to store one of the program states corresponding to the one of the threshold voltage levels by applying a programming voltage to the drain side through the selected resistance.
摘要:
A method for programming a multi-level nitride storage memory cell capable of storing different programming states corresponding to multiple different threshold voltage levels includes providing a variable resistance capable of providing a plurality of different resistance values; connecting a drain side of the nitride storage memory cell to a selected one of the plurality of resistance values that corresponds to one of the multiple threshold voltage levels; and programming the nitride storage memory cell to store one of the program states corresponding to the one of the threshold voltage levels by applying a programming voltage to the drain side through the selected resistance.
摘要:
A method for stabilizing brightness of a cold cathode fluorescent lamp includes receiving currents from two ends of the cold cathode fluorescent lamp and providing a current for the cold cathode fluorescent lamp according to a lower current of the currents received from the two ends of the cold cathode fluorescent lamp.
摘要:
A cylinder apparatus with a capability of detecting a piston position includes a cylinder, a throttling valve, a positive limit and a pressure switch. A piston is movably mounted in the cylinder. A piston rod with an outside end protruding out of the cylinder is attached to the piston and adapted to push an object. The cylinder is connected to a pump with pipes. The throttling valve and the pressure switch are connected to the pipes, and the pressure switch is installed between the cylinder and the throttling valve. Consequently, when the pump starts pumping, the piston rod pushes the object to abut the positive limit. The stopped movement of the piston rod will change the pressure in the cylinder that triggers the pressure switch to send a signal to a controlling host to stop the pump.