An Instrument for the Rapid Removal of DC Levels with Minimum AC Attenuation of Very Low Frequencies.
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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An ac amplifier with automatic adjustment of the input time constant to suit the signal frequency was developed. A dc component is removed from the ac signal within four cycles and the ac component attenuated by less than 25 over the design frequency range of 0.1 to 5 Hz.
- Test Facilities, Equipment and Methods