Total Cost for all components for
do-it-yourself project
$49.24
This design is basically a 7555 IC timer chip set for 50% duty cycle and
~3.9 Hz. driving a sub-miniature relay. Electrode polarity continually
reverses ~1/4 second positive / 1/4 second negative. Frequency is not
critical.
Patents applied for.
Footnote:
CODE OF FEDERAL REGULATIONS 21 § 807.65 Subpart D -- Exemptions. Paragraphs {d}
& {f}
Excludes and exempts from regulation:
" (d) Licensed practitioners, including physicians, dentists, and
optometrists, who manufacture or otherwise alter devices solely for
use in their practice."
" (f) Persons who manufacture, prepare, propagate, compound, or
process devices solely for use in research, teaching, or analysis,
and do not introduce such devices into commercial distribution."
Use of this device therefore appears legal and exempt from FDA
regulations when you construct it yourself for research and/or use it
in your own practice! But double-check your local, county and state
regulations for possible exceptions.
Copyright 2007 Tools for Healing, LLC. All Rights Reserved. Revised: February 2007
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