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 CAPTAIN SKYHAWK Playchoice 10 PCB *Tested and Fully Working* US $200.00 
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 Twin Eagle PCB game board Fully Working! US $65.00
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Pcb Fully
Quattuor failed PCB, now fully operational (connected to an MP3 player)
HSSDC, Or High Speed Serial Data Connector, Is An Interconnect Technologies For High-speed Information
HSSDC, or high speed serial data connector, is an interconnect technology for high-speed data transfer from cable to board (or vice versa) for applications such as gigabyte Ethernet, storage, servers and workstations. Making use of HSSDC, copper implementation of fibre channel along with other serial data applications can reach speeds of up to 2.125 Gbps over long distances. HSSDC has been approved by ANSI committees for use in fibre channel and serial storage architectures, too as for getting included within the new IEEE 802.three MHz Ethernet regular.
The HSSDC connectors are completely shielded, remain connected employing a "click" latching method and have "make first/ break last" ground contacts that make sure a trustworthy and non interfering connection. Circuit boards are developed to integrate into either a PC board providing 6 to 8 connections or in a PCI slot which can permit integration of up to 4 connectors into one card slot.
HSSDC technology has cable plugs that incorporate a tiny printed circuit board which can contain equalization circuitry to extend the usable length of copper cable to over 30 meters. Equalization can decrease the quantity of "cross talk" expected over existing Ethernet implementations. Cross speak is the undesired interference or talking in between 1 part of a network and one more. This reduction of interference decreases the quantity of lost information and network load, thereby rising overall transfer speeds.
HSSDC2 is a newer loved ones of interconnect solutions that includes shielded and adapter receptacles, copper pluggable modules, cable assemblies along with a cable plug kit. HSSDC's plugs are die cast having a stamped latch/ground spring, impedance controlled PCB and seven high-speed get in touch with pads.
Developed from the original HSSDC design, this new connector system utilizes less electricity and has a smaller form factor – providing overall space savings - than HSSDC connectors. This new adaptation of standard HSSDC has been specified by the InfiniBand Trade association for 1X I/O applications and appropriate for fibre channel and gigabyte Ethernet applications.
HSSDC2 is presently capable of providing transfer speeds of two.5 Gbps, an boost of only 0.35 Gbps over HSSDC. Whilst presently only a minor improve, future generations of this system will permit the information transfer capability to be elevated by as a lot as double, to five.0 Gbps. HSSDC2 items are used for storage devices, routers, network switches, and network interface cards (NICs).
For highest efficiency, both these connectors are designed using the aid of advanced modeling methods which includes electromagnetic modeling tools and sophisticated circuit simulations. This optimizes the equalization circuitry for distinct ranges of cables, such as long distance applications up to 30 meters.
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Frequently Asked Questions...
Electrical resistance of modified "Hofmann" voltameter? Uncertain of lengths needed?
modified Hofmann voltameter, constructed like the following...
Take plastic tank and glue a undrilled double copper sided PCB board and vertically across the bottom of tank, to form a weir (divider that doesn't reach the top of the tank) Tank then filled with liquid until the weir fully submerged.
I understand that the electrical resistance of a current path can be found by bulk_conductivity * path length/path_CSA But in this situation I'm unsure of the effective length and CSA for the current path. Only thing I can say with any certainty it's it's width will be that of the tank, but that still leaves it's effective length and depth. Will the depth of the current path be equal to how much water is above the weir? Will it's length be the distance between the midpoints of the electrodes? does the height of the plates change anything
http://en.wikipedia.org/wiki/Hofmann_voltameter
Even "ball park equations" are great. If possible rough error bounds would be really great
Answer:
The exact solution for this is difficult to obtain. It would require plotting the equipotential lines in the water, from which the electric field lines can be determined, and then integrating V = ∫J*E to get J = current density. Then the resistance is R = V/(A*J) where A is the area of the submerged portion of the board.
However, if the top of the liquid is very close to the top of the board, you can make the approximation that most of the resistance comes from that narrow current path. Then the resistance is
R = ρ*t/a where t is the board thickness and a the area of liquid above the board.
