To characterize the power supply sensitivity, a sine wave
was injected onto the 5 V supply.
The %THD of modified sine wave
UPS is highest among all the UPS under test as shown in table 4.
Modern "sine wave
" inverters give a close approximation of a pure sine wave
by using numerous small steps to simulate a smooth curve (Illustration 4).
This requires 2's complement when the phase is between (n: 2[pi]) and is achieved by adding full adder at the output gate to accomplish the full sine wave
The term that describes how a sine wave
differential signal is affected by an interconnect when it exits is the differential insertion loss, sometimes referred to by its S-parameter designation, SDD21.
Figure 2a shows the 1.00 kHz sine wave
as a single peak at 1.00 kHz, whereas Figure 2b has the same 1.00 kHz peak plus square-wave-induced, high-level harmonics at 3.00 kHz and 5.00 kHz and lower amplitude frequency artifacts, none of which existed in the original 1.00 kHz signal.
Available in 600 VA, 1,000 VA, 1,500 VA, 2,000 VA and 3,000 VA tower and 19" rackmount models, the GE Digital Energy IT Series 600-3,000 VA UPS features pure sine wave
, fully digitized, microprocessor-controlled automatic voltage regulation at 50/60 Hz, and utilizes hot-swappable, user-replaceable batteries.
Residents also can receive 20% off the retail price of a wind turbine generator and 15% off of a sine wave
inverter at participating outlets.
Operators can choose a square wave shape for fast travel speeds and excellent puddle control, a sine wave
for a traditional softer sounding arc, or a triangular wave at low amperages to reduce the heat input into the weld.
It's true online, double-conversion UPS provides perfectly regulated sine wave
output within 2 percent of 100/110/120V (user-selectable) under all usage conditions.
Return loss is the fraction of sine wave
that reflects back from an interconnect in the special case when the source driving it and the far end termination are each 50 ohms.
When the sine wave
crosses zero, no power is supplied to the load; only when the sine wave
is at its peak is the instantaneous power applied to the load equal to the DC power.