Automatic frequency response plotting system

Details Automatic frequency response plotting system Automatic frequency response plotting system

1976-01-15

1978-05-16

Miller, Jr., Stanley D.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

328145, 324 57R, H03B 304

Patent

active

040901424

ABSTRACT:
An automatic frequency response plotting system includes control circuitry for controlling the sweep rate during the plotting operation as a function of rapid changes in the amplitude of the output of the device under test. The control circuitry senses the rate of change of the amplitude of the output of a device, which is supplied with a constant amplitude signal at a frequency which is variable at a sweep rate initially selected by an operator. When the rate of change of the amplitude of the output of the device exceeds a selected level the control circuitry automatically slows down the sweep rate until the amplitude rate of change falls below the selected level, when the normal sweep rate is automatically resumed. By reducing the sweep rate during rapid amplitude changes the plotter is able to accurately trace steep amplitude excursions, thus preventing unsuspected sharp dips or peaks in the response from being missed or minimized.

REFERENCES:
patent: 2970258 (1961-01-01), Sinclair
patent: 3612993 (1971-10-01), Tims
patent: 3750036 (1973-07-01), Burrows et al.

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