fast time constant
Also found in: Acronyms.
fast time constant[′fast ′tīm ‚kän·stənt]
An electric circuit which combines resistance and capacitance to give a short time constant for capacitor discharge through the resistor.
Circuit with short time constant used to emphasize signals of short duration to produce discrimination against low-frequency components of clutter in radar.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.