The Gift BoxBlind

I am currently using the following relay in a product: http://www.digikey.com/product-detail/en/te-connectivity-potter-brumfield-relays/RT424024/PB969-ND/1095293 It is a DPDT, non-latching relay rated for 8A switching, and a 24Vdc coil voltage. The problem: The "clicking sound." This is for a home audio application, so we need it to be silent. I am looking for a silent version, using MOSFETS for example, built onto a daughter board (PCB) with the same footprint and pin-out as the relay. Note - I only need SPDT capability (I tie the two poles of the DPDT relay via on the board that the relay is installed onto). One side of the relay coil (pin 1) is always tied to 24V. And the other side is either set to 24V or GND via this chip: http://www.digikey.com/product-search/en?keywords=296-19046-5-ND (which is controlled by a PIC micro) Requirements: - An electrical schematic of the new design - A BOM of all the parts required - Gerbers for the PCB daughter board - Same footprint and pin-out as the RT424024 relay. Note, for this SPDT version, the following pins will be tied together (12 & 22, 11 & 21, 14 & 24). They are already tied together on the PCB that the relay currently is soldered to. - Same 24Vdc "coil voltage" (pin 1 always tied to 24Vdc, and pin 2 is controlled externally to be 24Vdc or GND via the external chip mentioned above). - When the relay is not activated, pins 12 & 22 are connected to pins 11 & 21). When the relay is activated, pins 11 & 21 are connected to pins 14 & 24. - Use high current MOSFETs (the lower the turn on resistance, the better! Should be able to handle > 25 Amps continuously (ideally > 50 Amps continuously). - Must have full protection from ESD / over-voltage on every pin. - There must NOT be 'cross-conduction' of the pins. - Must be very reliable - Must be silent switching - Must be the same footprint and pinout as the relay that it is replacing (Mentioned above). Max. height is > 1 inch (we are only limited by the footprint, not the height). - Layout software can be whatever you want as long as I can get the PCB gerbers to send to my PCB house. - BOM should be in a spreadsheet (excel) - Electrical schematic can be in PDF

Create 3d block models of 3 homes. We need to see the effect the shadow of the middle home effects the house to the East. Each of the 3 homes will not need a lot of detail. The house must be placed in a real world location.

The design requires a clean simple method with minimized parts and manufacturing costs. Product is low volume, 250 to 500 pieces per year. We are interested in minimizing capital tooling costs. Design challenge is to design a keyboard slide platform that sits at a 32.5 degree angle (see attached documents). Keyboard slide needs to easily lock in upward position when not in use, and needs to easily be released and slide downward when in use. The keyboard slide is on a cart platform, so when the cart is being moved around, if it gets bumped, we do not want the keyboard slide to dislodge and slip into the down position.

We are redesigning an existing tool, it is a very simple tool which combines existing parts, Our focus is on portability and a modern sleek design, we require 2d and 3d tech drawings

Project is to design a conveyor system to transfer a range a products into a hydro-cooling bath, and then transfer the product through the bath and out the other end. Attached is a some more notes of the project and images of the products. The contents of the Pails and Bladder is hot Jams and Sources etc. Currently we don't know the thickness of the bladders when fill of the products but we can find this out once we have awarded the project. The attached files are only ideas from our customer, they would prefer to have the maximum time of immersion in the bath. Max floor space available is 8m, so as close to 8m of immersion would be ideal. Someone that has done work with Hydro-cooling bath conveying or works for a company that builds this type of equipment will be a great help. Please let us know if you require more information from us before taking on this project.