200Mhz to 400Mhz Voltage Controlled Oscillator:

90 MHz voltage controlled oscillator : A controllable source of RF for experiments on the FM Broadcast frequencies.

CMOS Inverter VCO tunes octave to UHF: 11/19/98 EDN-Design Ideas

Inverters form three phase VCO: 08/02/2001 EDN - Design Ideas / You sometimes need an inexpensive VCO that can produce evenly spaced three-phase outputs over a wide frequency range. You could use tracking all-phase filters with only one oscillator, but this technique is difficult to implement and offers limited range. Other methods, such as using a DSP, are feasible, but they're complex and expensive..

Inverting Latches Make Simple VCO: 06/19/97 EDN-Design Ideas

Programmable Clock Oscillator: voltage controller oscillator that was designed as a wide range oscillator to generate clock pulses for a stepper motor drive system, frequency could be varied over1,000,000:1

Voltage Controlled Panner: