COPYRIGHT

Copyright (C) 2015 Ole Wolf <wolf@blazingangles.com>.


geophone.c is free software:  you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program.  If not, see <http://www.gnu.org/licenses/>.


The original schematic for the amplifier was provided by David Johnson,
P.E. at "Dave's Circuits" at
<http://discovercircuits.com/DJ-Circuits/geophonepreamp1.htm>.

The files Amplifier.sch and Amplifier.sch are released under a Creative
Commons Attribution-ShareAlike 2.5 Generic (CC BY-SA 2.5); see
<http://creativecommons.org/licenses/by-sa/2.5/legalcode> for details.