Nonlinear distortion measurement using composite pulse waveform

Details Nonlinear distortion measurement using composite pulse waveform Nonlinear distortion measurement using composite pulse waveform

1979-04-30

1981-03-24

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

328162, G01R 2700

Patent

active

042583144

ABSTRACT:
The linearity of a circuit is measured by applying a test signal waveform to the circuit under test and then determining the level of the DC component or a certain low frequency component of the waveform as altered by the circuit under test. The test signal waveform has a first value for a first predetermined time period, a second value for a second predetermined time period and a third value for a third predetermined time period, the first and third values being equal in magnitude and polarity to each other, the second value being different in magnitude and polarity from the first and third values. The area of the part of the waveform above zero axis is equal to the area below the zero axis. Once the altered waveform varies in shape from the original waveform, the area of the portions of the altered waveform above and below the zero axis will be different in accordance with the nonlinearity. This difference will cause an increase in the level of the certain low frequency component which is indicative of the linearity of the circuit under test.

REFERENCES:
patent: 3387211 (1968-06-01), Kaufmann et al.
patent: 3421021 (1969-01-01), Britt
patent: 3469183 (1969-09-01), Cosgrove et al.

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