25-07-2023 дата публикации
Номер: CN116482451A
Принадлежит:
The invention relates to the technical field of noise measurement, and particularly discloses a chained self-noise measurement circuit based on noise self-excitation, which comprises a plurality of pre-amplifiers, a power supply and measurement equipment, the plurality of pre-amplifiers are connected in sequence, the plurality of pre-amplifiers are respectively connected with the power supply, and the measurement equipment is connected with the power supply. And the preamplifier at the rearmost end is connected with measuring equipment. The invention further discloses a chained self-noise measurement method based on noise self-excitation. Compared with a traditional measurement mode, a high-power amplifier is not introduced, the structure is simple, operation is easy and convenient, and the noise influence caused by a complex circuit is avoided; a chain-type measurement structure is adopted, and a proper amplification stage number is selected according to the noise magnitude, so that the ...
Подробнее