New electronics-theory content

Since it is almost holiday and most of the students already left to enjoy the summer, I have some more time to add content to the website.

I started with some more theory about passive filters, voltage dividers and some better graphics to explain the opamp circuits that I use quiet often.  Also some complete oscillator circuits and amplifiers. Hope you can use the examples in your own work. Something like this for example:

I will explain about the amplification of small signals with opamps.
and I added some nice oscillator circuits and more theory 

It is still not finished (when will it ever be;-)) but it’s a start.
Have a nice summer!