can anyone help me with my project. Iam thinking to do something related with solar energy. I had seen a project report " Solar tracking". Is it a still new...

There is no 5G yet. Even the APPLE-iphone4(4G) is a disaster . So , keep low your expectations for a few years.

i dont think a transformer output is d.c. for your requirements, you ask the shopkeeper, that you want a 18v dc adapter(converter)