摘要:
A method provides for additive plating on a subcomposite having filled plated through holes. Fine-line circuitry is achieved via electroless deposition onto a dielectric substrate after the through hole is plated and filled. Fine-line circuitry may be routed over landless, plated through holes thereby increasing the aspect ratio and the available surface area for additional components and wiring.
摘要:
A coupling device for use in a resonator has a loop electrically connected at one end to a central conductor and at the other end to an electrically conductive ring wherein the loop may be rotated independently of the coupling device connector and mounting plate thereby allowing the loaded Q of the resonator to be varied without complete disengagement of the coupling device from the resonator.
摘要:
A method of converting a land grid array (LGA) module to a ball grid array (BGA) module by removing and oxidizing portions of the LGA conductive pad features on the upper surface of the LGA module. A BGA solder ball is deposited on the remaining portion of the conductive feature of the LGA module, with subsequent reflowing of the BGA solder ball. By modifying the LGA module to support a BGA structure, excessive heat generated by components placed on the modified LGA pad can be conducted through the BGA structure and into the element on which the LGA module is attached, such as a PCB.
摘要:
An apparatus for programmably controlling the operation of a water heater having a programmable timer coupled to the water heater for establishing predetermined times of when the water heater should operate. The programmable controller allows for the operation of a solenoid valve which controls the flow of natural gas to a burner. The present invention may utilize a conventional 110/120 volt power source as provided in a power vented gas water heater or an electrical water heater, or the present invention may utilize a thermopile as a mini generator by which to power the programmable timer and solenoid.
摘要:
A three way lamp having two gas discharge light tubes mounted on the same housing having three terminals arranged thereon as provided on a three-way incandescent lamp.
摘要:
In a fluorescent lamp having a multi-layer phosphor, a halophosphate-containing layer having color coordinates within an oval centered on X=0.382 and Y=0.384. A rare earth activated phosphor layer has approximately the same color coordinates. The area density ratio of the rare earth and halophosphate-containing phosphor layers is between 0.088 to 0.222 and preferably between 0.088 to 0.133.