Figure 8 is the screen shots of the response surface of volume of ablation against pulse width
and number of pulses at pulse energy levels of (a) 1 J, (b) 2J, and (c) 3J.
The pulse width
ratio was measured using the 50 g test mass by applying the noise reduction algorithm as shown in Figure 11.
To evaluate the variable pulse width
, we change the code parameters of the selected register block.
where [tau] is the pulse width
. Simulated result is presented in Figure 11.
The effect of varying the current profile was studied by applying pulsed dc with different pulse widths
. The apparent flux for pulse train of different pulse widths
is shown in Table 1.
Key words: pacemakers, longevity, pulse amplitude, pulse width
, pacing threshold
The minimum range is derived from the pulse width
by the following formula:
Enhanced performance with the wider pulse widths
and increased reverse current density ratios were not surprising, but the improvement, although statistically less significant, with increased average current density was unexpected.
Boulder, Colorado-based AudioLogic's IP includes all-digital pulse width
modulation technology and what it claims is the world's lowest power digital signal processor.
Process Control Corp., Atlanta, has improved its XG series of gravimetric blenders with a new Pulse Width
Modulation (PWM) closed-loop drive control, which increases the operating range of each ingredient feeder to 30:1 from 10:1.
Other features of the 2001 Series include a pulse width
modulation output that ensures smooth, cool motor operation over a range of speeds; high carrier frequency output that ensures a quiet motor at all speeds and loads; and the ability to smoothly start into a rotating motor in either direction.
Combining 40W average power with 400[micro]J pulse energies and exceptional energy stability of less than 0.5 per cent rms, the Carbide maintains all the best features of its predecessor, Pharos, including tuneable repetition rates from single shot to 1MHz, an integrated pulse picker for pulse-on-demand control, and tuneable pulse width
from less than 290fs to more than 10ps.