BRUEL & KJAER 2006 User Manual

type. It can be re-charged from a charging unit which is also contained in
the instrument.
However, the instrument can also be driven from power lines carrying 100
- 115 - 127 - 150 - 220 - 240 volts AC, 50-400 Hz. Power consumption
is about 15 watt. Adjustment for the various mains voltage is carried out at
the back plate of the instrument cover. A disc indicates to which mains
voltage the instrument is adjusted. The instrument is protected by a fuse
which is inserted in the primary side of the power transformer. The fuse can
be replaced from the back of the apparatus
The battery has a charge of 3.5 Ampere-hours which corresponds to 8 hours
of continuous operation of the unit. The power supply for the transistors is
stabilized and the internal impedance is only a fraction of an ohm. A
transistorized DC converter and voltage-doubling circuit is used to obtain the
power mentioned above. The converter frequency is approximately 20 kHz.
It has been found convenient to give some sort of easy, visual indication of
whether the instrument is switched for battery or mains voltage operation
so that an unnecessary use of the battery is avoided. This is made by means
of a neon-lamp. When the instrument is operated from the battery the light
comes on at certain regular intervals, while during mains voltage operation
the light is continuous. When recharging, only the meter lights are on.
When it is desired to re-charge the battery the instrument is connected to the
mains voltage and the POWER SWITCH set to position "Charge" (or "Line").
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BRUEL & KJAER 2006 Specifications

General

Brand	BRUEL & KJAER
Model	2006
Category	Measuring Instruments
Language	English