New Computer Method for Obtaining Optimum Area

An automatic computer method for obtaining the optimum area for any fixed time interval under a transient is described and discussed. This method automatically chooses the point on the transient where integration of the area is initiated and a preset timer stops the integrator after the selected time interval has elapsed. This method is based on the use of a magnetic tape recorder with a modified playback arrangement and integrator. The initiating point is chosen with an accuracy of ±0.028 volt where the input signal range is zero to ten volts. The stability of the one‐shot timing circuit is one part in a thousand with a gate time between 40 and 500 milliseconds. The system accuracy for obtaining area depends on the particular magnetic tape system and integrator used, and type of transient being examined.