摘要:
A memory voltage control circuit includes two slots, a control circuit, a voltage conversion circuit, and a switch circuit. The two slots are able to efficiently process different memory types. The control circuit receives memory identification signals from the two slots. The control circuit administers the output voltage of the voltage conversion circuit according to the memory identification signals. The memory identification signals determine whether the switch circuit is to be turned on or off. This will control whether the output voltage of the voltage conversion circuit will go to the first or the second slot.
摘要:
Disclosed herein are phosphor compositions comprising a BAM phosphor BaMgAl10O17:Eu2+ and at least one other hexaaluminate that may also be europium activated. The BAM may be mixed with any number of different kinds of heaxaaluminates having a similar crystal structure. The aluminum ratio may also be adjusted to alter the defect structure or to produce a second phase. Addition of another hexaaluminate to BAM enhances emission intensity and resistance to degradation, which is beneficial to applications such as plasma display panels.
摘要:
An exemplary device for controlling rotation speed of a computer fan includes an identifying device and a control circuit. The identifying device is configured for identifying the type of the computer fan. The control circuit configured for controlling rotation speed of the computer fan includes an electric switch, an integrated circuit, a first output terminal, and a second output terminal. The electric switch has a first terminal coupled to the identifying device to receive an identifying signal, a second terminal coupled to a super I/O chip to receive a PWM signal. The integrated circuit is configured to convert the PWM signal to an analog voltage signal. The first output terminal is configured to output the PWM signal to a PWM control pin of a fan header. The second output terminal is configured to output the analog voltage signal to a power pin of the fan header.
摘要:
An electrical connector comprises an insulating housing (1) defining a receiving cavity opening (101) through a front face thereof for receiving a mating connector, a plurality of conductive terminals (2) comprising an elastic contacting portion (22) slantwise extending into the receiving cavity and a discrete limiting member (4) being inserted into the cavity through a inserting opening (15) and positioned under the contacting portion so as to prevent the contacting portions from over moving when an un-mating connector is inserted into the receiving cavity.
摘要:
An electrical connector (100) for permitting insertion of a full sized plug and preventing insertion of a smaller sized plug includes an insulative housing (1) defining a receiving cavity (110) through a mating face (11) thereof for receiving a mating connector and a plurality of terminals (2) received in the housing. Each terminal defines a fixing portion (20) retained in the housing, a contacting portion (21) being inclinedly bent at an angle and extending into the receiving cavity from one end of the fixing portion and a soldering portion (22) extending from the other end of the fixing portion. The fixing portion further defines a supporting portion (23) with two ends connecting with the fixing portion, the supporting portion faces to and supports the contacting portion to prevent the contacting portion from further excursion.
摘要:
Novel phosphor systems are disclosed having the formula A2SiO4:Eu2+D, where A is at least one of a divalent metal selected from the group consisting of Sr, Ca, Ba, Mg, Zn, and Cd; and D is a dopant selected from the group consisting of F, Cl, Br, I, P, S and N. In one embodiment, the novel phosphor has the formula (Sr1-x-yBaxMy)2 SiO4:Eu2+F (where M is one of Ca, Mg, Zn, or Cd in an amount ranging from 0
摘要:
Disclosed is a compound having the formula (I) pharmaceutically acceptable salts or solvates thereof and pharmaceutical compositions containing the same, wherein the structural variables are as defined herein. The compounds, salts and solvates of this invention are useful as LXR agonists
摘要:
An optical-electric connector (100) includes an insulating housing (10), a number of terminals, an optical element (40) and a shielding shell (30). The insulating housing (10) defines a mating face (11) having a mating hole (111) thereon, a receiving room (13) communicating with the mating hole and a number of terminal slots (15) receiving the terminals. The optical element is assembled in the insulating housing. The shielding shell substantially encloses the insulating housing and comprises a grounding tab (33) extending from an upper face thereof, the terminal comprises a grounding terminal and a detecting terminal.
摘要:
Novel two-phase yellow phosphors are disclosed having a peak emission intensity at wavelengths ranging from about 555 nm to about 580 nm when excited by a radiation source having a wavelength ranging from 220 nm to 530 nm. The present phosphors may be represented by the formula a[Srx(M1)1-x]zSiO4●(1-a)[Sry(M2)1-y]uSiO5:Eu2+D, wherein M1 and M2 are at least one of a divalent metal such as Ba, Mg, Ca, and Zn, the values of a, x, y, z and u follow the following relationships: 0.6≦a≦0.85; 0.3≦x≦0.6; 0.85≦y≦1; 1.5≦z≦2.5; 2.6≦u≦3.3; and Eu and D each range from 0.001 to about 0.5. D is an anion selected from the group consisting of F, Cl, Br, S, and N, and at least some of the D anion replaces oxygen in the host silicate lattice of the phosphor. The present yellow phosphors have applications in high brightness white LED illumination systems, LCD display panels, plasma display panels, and yellow LEDs and illumination systems.
摘要翻译:公开了当波长范围为220nm至530nm的辐射源激发时,波长范围为约555nm至约580nm的峰值发射强度的新型二相黄色荧光体。 本发明的荧光体可以由式a [Sr x 1(M 1)1-x N z SiO 2 S / >(1-a)[Sr y y(((u u Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu Eu 2 + D,其中M1和M2是二价金属如Ba,Mg,Ca和Zn中的至少一种,a,x,y,z和u的值遵循以下关系 :0.6 <= a <= 0.85; 0.3 <= x <= 0.6; 0.85 <= y <= 1; 1.5 <= z <= 2.5; 2.6 <= u <= 3.3; 并且Eu和D各自为0.001至约0.5。 D是选自F,Cl,Br,S和N的阴离子,并且D阴离子中的至少一些取代荧光体的主体硅酸盐晶格中的氧。 目前的黄色荧光粉可用于高亮度白光LED照明系统,液晶显示面板,等离子显示面板以及黄色LED和照明系统。
摘要:
This invention provides novel fuel cell electrodes and catalysts comprising a series of catalytically active thin-film metal alloys with low platinum concentration supported on nanostructured materials (nanoparticles). Processing of the electrodes and catalysts can include electrodeposition methods, and high-pressure coating techniques. In certain embodiments, an integrated gas-diffusion/electrode/catalyst layer can be prepared by processing catalyst thin films and nanoparticles into gas-diffusion media such as Toray or SGL carbon fiber papers. The catalysts can be placed in contact with an electrolyte membrane for PEM fuel cell applications.