App note: Principles of SAWR-stabilized oscillators and transmitters

Principles of SAW-stabilized oscillators and transmitters from EPCOS, app note here (PDF!) This application note describes the physical principle of SAW-stabilized oscillator. Oscillator structures for one- and two-port SAW resonators are discussed. An application example for a 433.92MHz transmitter for keyless entry is given

ATtiny25 Basic VCO, RC oscillator overclocking and testing frequency pickup

Alex over at InsideGadgets has posted an article describing how he built an ATtiny25 voltage controller oscillator (VCO): I recently bought a Rigol DS1052E and have been playing around with the different functionality it has. Eventually I came to the point that I’d like to see what frequency does to various components and wanted to build […]