ELECTRONICA Munich. The worlds leading trade fair for professional
9:00 a.m. They are coming!
Purchase Manager Markus Keller:
Ready for the visitors: Markus
Tishurova and Monty Grimes (from left to right)
Vice President Monty Grimes and
Junior Assistant Viktoria
Hottmann: We even try to speak Spanish for our customers.
Vice President Olga Tishurova and
Production Manager Torsten Mei�ner
Left: Development Engineer Sven Jacobi with a
Sweets, fruits and high voltage switches: Whatever the visitors
display of a dielectric liquid cooling system using the new BEHLKE
PU-2 pump unit. Various malfunctions can be simulated to
demonstrate the safety features of the intelligent PU-2 pump.
Top left in the cooling box is a callable cell phone (i-phone 5)
immersed in the liquid, to show the dielectrical properties of
the FPFE coolant. In the lower
cooling box are two resistors of 47 Ohm each, which are connected
in series to the mains voltage (240 VAC). The resulting power
dissipation is 560 Watt, which can be removed either by the active
radiator (AR-800W) or the heat exchanger (HE-10). At
the right side of the resistor box is a high-voltage
high-frequency switching unit (FSWP 51-01) with a transparent
viewing window. The unit can generate square wave pulses
from 0 to 5 kV at a repetition rate of up to 3 MHz. The rise
and fall time is less than 6 ns. Thanks to the DLC cooling, the max. power dissipation
in this small plastic housing can be up to
The display case for the
dielectric liquid cooling equipment. In the front is a 19" rack
housing with an integrated PU-2 pump unit.
Top: The high
voltage demonstration set-up for the new compact switches.
Underneath: A small selection of fast high voltage
The high voltage demonstration set-up in operation with 20 kV
input voltage. All switch control inputs are unshielded and
connected in parallel. All switches are in a high side
configuration with a 5 Kiloohm load at the output (except the
push-pull switch). On the scope display: Yellow = common TTL
control signal, blue = 6 kV push-pull switch, violet = 12 kV
variable on-time switch, green = 24 kV fixed on-time switch. All
three switches are operated at the same time at about 90% of their
maximum operating voltage. The high voltage pulse rise times of
the three switches are between 5 to 8 ns. Nice to see that the
three switches do not interference each other, even with
unshielded input wiring. The newly developed VC4 control
circuit guarantees a perfect EMC even under the absolute worst
A small selection of FDA fast high voltage diodes, high voltage
square wave pulsers and pockels cell drivers
A small selection of fast high voltage push-pull switches
Fast high voltage thyristor switches (1)
Fast high voltage thyristor switches (2)
Liquid cooled high-power high-voltage switches in a tubular
housing. The switches are equipped with a special noise filter
(black tube) and have a separate control unit.
Top: MOSFET switch, 100 kV / 200 A / 20 kW.
Middle: MOSFET switch, 150 kV / 200 A / 30 kW.
Below: MOSFET switch, 150 kV / 400 A / 40 kW
In the background at the blue column: A 150 kV, 200 A MOSFET
push-pull switch in a plastic standard housing, also with DLC
direct liquid cooling.
An issue for highly qualified engineers: The radio controlled
At last, they got it.
Thank you for your visit and see you soon in N�rnberg and San Francisco!
From left to right: Frank Behlke, Olga Tishurova,
Viktoria Hottmann, Hannah Pohl, Monty Grimes and Torsten Mei�ner