The effect of electronic components on the cut-off frequency of the hot-wire system

Full text for this resource is not available from the Research Repository.

Li, Jun-de (2005) The effect of electronic components on the cut-off frequency of the hot-wire system. Measurement Science and Technology, 16 (3). pp. 766-774. ISSN 0957-0233


The analytical solution for the frequency response of a constant temperature hot-wire system at given turbulent velocity fluctuations is used to investigate the effects on the cut-off frequency of the hot-wire system at different operating conditions. It is found that the optimal frequency response of the hot-wire system determined by the traditional square-wave test, under certain circumstances, cannot guarantee the stability of the hot-wire system from velocity perturbations. It is also found that the cut-off frequency depends not only on the hot-wire length to diameter ratio, the mean velocity, the hot-wire materials and the overheat ratio as previously found, but also on the gain bandwidth product of the amplifiers in the feedback circuit, the resistances used in the Wheatstone bridge and the gain of the amplifier in the feedback loop. Hot-wire systems with preferred operating conditions are recommended.

Dimensions Badge

Altmetric Badge

Item type Article
DOI 10.1088/0957-0233/16/3/020
Official URL
Subjects Historical > RFCD Classification > 290000 Engineering and Technology
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Keywords cut-off frequency, hot-wire anemometers, turbulent measurements
Citations in Scopus 15 - View on Scopus
Download/View statistics View download statistics for this item

Search Google Scholar

Repository staff login