"Most circuit simulators I have ever come across are based on the same methodology as SPICE, even if they are optimised to certain circuits or have built in models for more complicated or accurate circuit elements. Hence they are all limited in the…"

"There is one other circuit that I have invented that would create a virtually complete replacement for a mechanical relay with no limit to it's current capacity or voltage (with the correct component choice of course), but I have not seen it…"

"You have not stated what voltage the device should withstand (operational and extreme) and what isolation you require and if there are any safety considerations, also what about cost or size limiatations? To start I would assume you have already…"

"Download Alibre Design, its not as good as Solidworks, but it's free and very similar."

"The NXP LPC2000/3000 range. Fully featured open source compiler and IDE (GNU/YAGARTO). Very low cost debugger (AMONTEC). The LPC devices are crammed full of usefull stuff & very fast yet low power."

"Hi, Let me introduce myself an my company. I am an electronics engineer with 15+ years experience in electronics design. Our company is a small electronic product design consultancy based in the UK. VPN Solutions Ltd specialise in microprocessor…"