About this manual
This user manual is an integral part
of the Falco Systems WMA-005
amplifier product. Please read it
carefully and pay attention to the
recommendations
and
the
instructions for safe use.
General description
The Falco Systems WMA-005 is a
high voltage amplifier that runs from
an 18 – 30V DC power supply and
can be battery powered if required,
e.g. for use in a Faraday cage. Its
internal high voltage generator is
inductor-free and hence does not
spread magnetic interference in
sensitive experimental setups. Its
large voltage range makes it an
excellent choice for use with MEMS
devices, EO-modulators, PZT (piezo)
positioning systems, beam steering
components, and many more.
The amplifiers’ full-power frequency
response
has
a
-3dB
corner
frequency at 20kHz. The input
impedance is 100k
Ω
and the output
50k
Ω
.
The output noise is at this price level
impressively low at 3mVrms. For
extremely low noise applications
where bandwidth is not an issue, a
dedicated WMA-005LF version is
available that contains an output low
pass filter capacitor which reduces
the bandwidth to 50Hz, but makes
the noise drop to 0.1mVrms. This
bandwidth-limited amplifier is ideal
for MEMS or piezo positioning with
manual voltage adjustment requiring
extremely low noise.
The WMA-005 contains an over-
voltage protection for the daily use
and abuse in the laboratory and is
long-term short-circuit proof. The
input (indicated “Input” on the WMA-
005
label),
output
(indicated
“Output”) and DC power supply
(Indicated “18 – 30V DC 120mA”)
connections are all standard BNC.
The amplification is 20x (fixed). With
a range of –75V to +75V, a –3dB
bandwidth of 20kHz, possibility for
battery powered operation, and
below 3mVrms output noise, this
amplifier
will
enable
many
measurements
in
different
applications.
Safety
- This product is able to produce over
75V, but the 50k
Ω
output impedance
limits the current to a rather safe
maximum of 1.5mA. Although this
voltage is painful it will under normal
circumstances
not
be
lethal.
Nevertheless take care. This is a
high
voltage
unit
and
safety
measures
should
be
taken
accordingly.
- The internal circuitry of the amplifier
operates at high voltage. Only
qualified
personnel
from
Falco
Systems
should
service
this
amplifier.
- When the amplifier is turned on or
off, a short voltage spike may appear
at the output which may damage
circuitry already connected to it.
- Replace the fuse with 250V
315mAT 5x20mm rated fuses only.
- The Falco Systems WMA-005 is
only suitable for indoor use in a class
!
