. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. 38 STIMULATORS The classical device for stimulating biological tissue is, of course, the induc- tion coil. By interrupting the direct current flowing in a primary winding an is induced into a mutually coupled secondary which drives stimulat- ing current through the preparation* {Figure ). The stimulating current. * Output to —'^ tissue Figure waveform has the form shown; a sharp rising phase followed by an expo- nential decay. The magnitude of the shock depends on the mutua
. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. 38 STIMULATORS The classical device for stimulating biological tissue is, of course, the induc- tion coil. By interrupting the direct current flowing in a primary winding an is induced into a mutually coupled secondary which drives stimulat- ing current through the preparation* {Figure ). The stimulating current. * Output to —'^ tissue Figure waveform has the form shown; a sharp rising phase followed by an expo- nential decay. The magnitude of the shock depends on the mutual induc- tance between the coils—one is arranged to slide in and out of the other— and the time constant of the decay depends on the self inductance of the secondary winding and the resistance of the preparation, being equal to the 1 Low resistance buzzer 41/2V Dry battery. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donaldson, Peter Eden Kirwan. New York, Academic Press
Size: 1996px × 1252px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, bookleafnumber650
