<s>
The	O
abbreviation	O
IEPE	B-Algorithm
stands	O
for	O
Integrated	B-Algorithm
Electronics	I-Algorithm
Piezo-Electric	I-Algorithm
.	O
</s>
<s>
It	O
characterises	O
a	O
technical	O
standard	O
for	O
piezoelectric	B-Algorithm
sensors	I-Algorithm
which	O
contain	O
built-in	O
impedance	O
conversion	O
electronics	O
.	O
</s>
<s>
IEPE	B-Algorithm
sensors	O
are	O
used	O
to	O
measure	O
acceleration	O
,	O
force	O
or	O
pressure	O
.	O
</s>
<s>
Measurement	O
microphones	B-Application
also	O
apply	O
the	O
IEPE	B-Algorithm
standard	O
.	O
</s>
<s>
The	O
electronics	O
of	O
the	O
IEPE	B-Algorithm
sensor	O
(	O
typically	O
implemented	O
as	O
FET	O
circuit	O
)	O
converts	O
the	O
high	O
impedance	O
signal	O
of	O
the	O
piezoelectric	O
material	O
into	O
a	O
voltage	O
signal	O
with	O
a	O
low	O
impedance	O
of	O
typically	O
100	O
Ω	O
.	O
</s>
<s>
In	O
addition	O
,	O
special	O
low	O
noise	O
cables	O
,	O
which	O
are	O
otherwise	O
required	O
for	O
use	O
with	O
piezoelectric	B-Algorithm
sensors	I-Algorithm
,	O
are	O
no	O
longer	O
necessary	O
.	O
</s>
<s>
A	O
distinguishing	O
feature	O
of	O
the	O
IEPE	B-Algorithm
principle	O
is	O
that	O
the	O
power	O
supply	O
and	O
the	O
sensor	O
signal	O
are	O
transmitted	O
via	O
one	O
shielded	O
wire	O
.	O
</s>
<s>
Most	O
IEPE	B-Algorithm
sensors	O
work	O
at	O
a	O
constant	O
current	O
between	O
2	O
and	O
20	O
mA	O
.	O
</s>
<s>
Supplying	O
the	O
IEPE	B-Algorithm
sensor	O
with	O
constant	O
current	O
,	O
results	O
in	O
a	O
positive	O
bias	O
voltage	O
,	O
typically	O
between	O
8	O
and	O
12	O
volts	O
,	O
at	O
the	O
output	O
.	O
</s>
<s>
A	O
typical	O
IEPE	B-Algorithm
sensor	O
supply	O
with	O
4	O
mA	O
constant	O
current	O
and	O
25	O
V	O
compliance	O
voltage	O
has	O
a	O
power	O
consumption	O
of	O
100	O
mW	O
.	O
</s>
<s>
For	O
such	O
applications	O
low-power	O
IEPE	B-Algorithm
sensors	O
exist	O
which	O
can	O
be	O
operated	O
at	O
only	O
0.1	O
mA	O
constant	O
current	O
from	O
a	O
12	O
V	O
supply	O
.	O
</s>
<s>
Many	O
measuring	O
instruments	O
designed	O
for	O
piezoelectric	B-Algorithm
sensors	I-Algorithm
or	O
measurement	O
microphones	B-Application
have	O
an	O
IEPE	B-Algorithm
constant	O
current	O
source	O
integrated	O
at	O
the	O
input	O
.	O
</s>
<s>
In	O
measuring	O
instruments	O
with	O
IEPE	B-Algorithm
input	O
the	O
bias	O
voltage	O
is	O
often	O
used	O
for	O
sensor	O
detection	O
.	O
</s>
<s>
Piezoelectric	B-Algorithm
sensors	I-Algorithm
which	O
do	O
not	O
possess	O
IEPE	B-Algorithm
electronics	O
,	O
meaning	O
with	O
charge	O
output	O
,	O
remain	O
reserved	O
for	O
applications	O
where	O
lowest	O
frequencies	O
,	O
high	O
operating	O
temperatures	O
,	O
an	O
extremely	O
large	O
dynamic	O
range	O
,	O
very	O
energy	O
saving	O
operation	O
or	O
extremely	O
small	O
design	O
is	O
required	O
.	O
</s>
