Macaulay gave two alternative measures: 1  Expression (1) is FisherâWeil duration which uses zero-coupon bond prices as discount factors, and. 2  Expression (3) which uses the bond's yield to maturity to calculate discount factors.
An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal, often a sine wave or a square wave.Oscillators convert direct current (DC) from a power supply to an alternating current signal. They are widely used in many electronic devices.he most common form of linear oscillator is an electronic amplifier such as a transistor or op amp connected in a feedback loop with its output fed back into its input through a frequency selective electronic filter to provide positive feedback.
Thus, cesium oscillators are true primary standards that meet all performance requirements, and are the obvious and preferred choice of frequency standard for cal labs with the most demanding requirements. However, not all labs can justify the cost of a cesium.