All of the illustrated devices would not be
able to function properly were it not for the
phenomenon of outpoint excitation
conversion. Luckily, it is an easily produced
and easily understood process. The devices
in question are a standard lab model PRFT
rig, a parallel field translator, and a standard
three configuration determinator. The thing
that these two common pieces of apparatus
have in common is that they both require
the use of an overbled Mollot cell.
Overbleeding is the simplest method of
raising the gravity of a small Mollot cell
without altering its Hartley rating. However,
overbleeding also creates "phantom mass"
readings, better known as "stelching," which
must be smoothed out in order for either of
these devices output to be in any way useful.
This is where outpoint excitation conversion
The OEC is very simple in
concept and construction; generally an alloy
of Mercury, Cobalt and Boron granules is
contained within an envelope with the "in"
"out" terminals buried within the mass.
The signal is conducted straight through
while excess excitation is dephased by
exposure to the Boron, thus resulting in a
signal which has full gravity but has its
outpoint excitation dephased or converted.