Air Damped Capacitance Accelerometers and Velocimeters

This is a companion paper serving as an extension of an earlier presentation entitled ``Signal Transduction With Differential Pulse Width Modulation´´¹. In that paper, a scheme was introduced to streamline the data acquisition system bridging a variety of physical parameters to be measured with several forms of signal processing. The essential part of that scheme involves the generation of a differential pulse width modulated signal with integrated logic circuits utilizing d. c. excitation to produce analog output with significant power, a pulse width modulated signal suitable for transmission or tape recording, or a digital output suitable for computer coupling.