This Design Idea describes an oscillator in which setting the resistance of two digital potentiometers independently programs the oscillation amplitude and frequency. This design idea uses diode-stabilized Wien-bridge oscillator that generates accurate si
http://www.edn.com/article/CA198897.html
handful of components configures a current-feedback op amp as a large-amplitude sine-wave oscillator with independent adjustment of amplitude and frequency
http://www.edn.com/archives/1995/060895/12di5.htm
circuit draws only 0.5 microamps from a 6 volt supply, outpur frequency is 2 Hz but can be tuned up to 300 Hz, based on CD4007UB IC
http://www.imagineeringezine.com/e-zine/lowfreq.html
Silicon controlled rectifiers (SCR) can easily oscillate if there is an inductor (a speaker coil in this case) which gives just enough extra voltage to completely switch off the sustain current. In this way a new cycle may start and oscillations set in. I
http://www.geocities.com/CapeCanaveral/Lab/5185/circuit.html
Microcontrollers commonly add intelligence or digital functions to products, but they can also provide a variety of analog signals. An 18-pin PIC16C54 microcontroller, combined with an inexpensive, 8-bit DAC and a simple lowpass filter, can generate sine
http://www.edn.com/article/CA196484.html
includes CMOS 555 timer clock oscillator and schmitt-trigger RC oscillator.
http://www.psyber.com/~dibsed/CIRCATS/cmosrcs.pdf
works much like the classic 555 timer, but draws only about 1.5 microamps from a 3 volt battery, highly stable under varying temperature and supply voltages
http://www.imagineeringezine.com/PDF-FILES/10secosc.pdf