An infrared heat source for temperature control of a small microscope flow bath

Author

Hewett, Kenneth W. ; Francis, W.W.

Author_Institution

Div. of Pediatr. Cardiol., Med. Univ. of South Carolina, Charleston, SC, USA

Volume

37

Issue

5

fYear

1990

fDate

5/1/1990 12:00:00 AM

Firstpage

543

Lastpage

546

Abstract

A simple, inexpensive, and easily installed infrared heat source with temperature controller for small superfusion baths used in electrophysiologic experiments is described. The output of a thermal sensor in the bath is amplified and sent to a feedback circuit which in turn controls the voltage supplied to a tungsten/halogen bulb focused on the bath. Fluctuation from the set point is no more than 0.2 degrees C with good fluid level control. Judging from the lack of change in the cardiac action potential duration, heart cells do not preferentially absorb in infrared radiation.

Keywords

biocontrol; bioelectric phenomena; biological techniques and instruments; biothermics; infrared sources; temperature control; cardiac action potential duration; electrophysiologic experiments; feedback circuit; fluid level control; heart cells; infrared heat source; small microscope flow bath; small superfusion baths; temperature control; thermal sensor; Feedback circuits; Fluctuations; Fluid flow control; Infrared heating; Microscopy; Temperature control; Temperature sensors; Thermal sensors; Tungsten; Voltage control; Action Potentials; Animals; Baths; Dogs; Equipment Design; Heart; Heating; Infrared Rays; Microscopy; Temperature;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.55646

Filename

55646