1. Field of the Invention
This invention relates generally to oscillators and, more specifically, to a fast start-up piezoelectric resonator based oscillator which uses a circuit which will prestress the piezoelectric resonator and which will bias the oscillator into a linear operating region after the piezoelectric resonator has been prestressed.
2. Description of the Prior Art
The start-up time of an oscillator is defined as the time required for the oscillator to reach a steady state. Presently, for most oscillators, the start-up time can be several seconds depending on the crystal frequency and amplifier design of the oscillator. The start-up time may be even longer when the temperature of the device using the oscillator increases. This creates the problem since the start-up times may be fairly long and unpredictable.
Therefore, a need existed to provide an improved oscillator. The improved oscillator must have faster start-up times than present oscillators. The improved oscillator must further have faster and more predictable start-up times even though operating conditions may fluctuate and change.