File conversions

Online Tutorials

General Engineering

Engineering.com lots of cool videos and resources to introduce engineering to students
University of the People - Help international students striving to receive a degree
The Indo US Collaboration for Engineering Education (IUCEE) program - lots of webinars and educational materials related to engineering
Khan Academy - free videos on math topics
Publish your articles here: Research Gate
Spoke is an online free content business database and the authoritative source for business information.

Interested in Machine Learning?

Simulations

Simjava2 with augmented statistical and reporting support
Sonnet Tutorial - A useful tool for modeling and simulating transmission lines.
N1010A FlexDCA Express is a powerful software application that provides the following offline capabilities on your PC. You can download the free version. Usefully for Signals and Systems, Eye diagram, etc.
Rent a Software - This site gives you tempera access to a large number of different software packages. I have never tried it!
This circuit drawing program is available in windows for free. But it looks symbol for DC sources
A inductance calculator from Stanford
This is the solid state circuit web page. Some of its content is not free. But it is loaded with information from the best of best circuit designers

Free Online Journals & Books

Electronics - Open Access Journal
Journal of High Speed Networks
IOS Press (In Netherlands)
Sensor Web Portal (lots of information about different sensor technologies)
IEEE Communications Society Publications Contents Digest - This is a handy guide that helps you to keep track of the latest published articles in one place.
Sensors is an international, peer-reviewed open access journal on the science and technology of sensors and biosensor, is published by MDPI online monthly.
Optics Express - The original all-electronic, open-access optics journal Optics Express (OpEx) is known for its rapid time to publication and high Impact Factor.
Free Whitepapers from National Instruments.
**** You can also click on this link for more information....****

Funding

Buying Parts