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3
votes
0answers
44 views

Yields in DRAM and other Massively Redundant Processes

I'm right now combing the electrical engineering literature on the sorts of strategies employed to reliably produce highly complex but also extremely fragile systems such as DRAM, where you have an ...
1
vote
1answer
77 views

using double powersupplies

I have 2 computers (home PC's). Both are connected to the internet through a router/switch. The router is always powered, regardless when one (or both PC's) are going standby. Idea is, to power the ...
1
vote
1answer
130 views

How to create a triple redundant clock tree in FPGA manually?

I am exploring a range of techniques to implement TMR clock trees as part of a global TMR design (all resources including i/o pins, clock trees, reset trees, logic and registers are implemented with ...
1
vote
2answers
2k views

Using a relay to switch between 230VAC inputs

I have two mains power inputs (in case one fails, the other is likely to still work), but the device only has one power supply, so I decided to use a relay to switch between the inputs (the device ...
13
votes
3answers
2k views

Dual-SIM phone, do they use 2 GSM modules ? Anyone has high level schematic?

As an slight extension of my project, I am trying to see if I can improve connectivity resilence by using a dual-SIM approach. Dual-SIM phones (or Tri-SIM, quad-SIM phones) are quite popular in many ...
4
votes
2answers
191 views

Operation without power: Passing analog video

Okay, the title sounds odd, I'll admit. I need my project to work without power. That is, a complete power failure may happen, and no additional power (such as a battery or supercap) is available ...