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S E CT I ON 1
GE NE R AL DE S CR I P T I ON
1 .1
I NT R ODU CT I ON
The Elgar TrueWave™ Series AC power source, models TW 3700 and TW 5550 use
transformerless, direct coupled amplifiers and a DSP-based sine wave controller for
testing a variety of complex electronics.
Figure 1-1 Elgar TrueWave AC Power Source (Rack Mount Version)
Programming is accomplished at the front panel or with a personal computer (PC).
The TrueWave communicates with the PC through a GPIB or RS-232 interface.
Programming commands are defined in the TW Programming Manual, Elgar Document
No. M161469-02.
One to three phase AC sine wave or DC output is specified by pushbutton/LED menu-
based control. Incremental and absolute voltage and current setpoints are available at
the TW front panel. The TW incorporates a hierarchical menu system to set system
parameters.
The TrueWave sources are true DC as well as AC power supplies. Up to 312 VRMS
are available in AC or AC+DC modes. Multi-phase models can be switched to single or
three-phased operation via the front panel or the GPIB.
A wide frequency range of DC or 40 Hz to 500 Hz is available for a broad array of
applications. Utilizing the latest in AC switch mode technology, the TW has less than
-60 dB of noise and ripple with total harmonic distortion (THD) of <0.5%. A crest factor
of 3.25 provides high peak-to-RMS current capability. An optional input power factor
correction (PFC) of .99 is also available.
Elgar TrueWave
1-1
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