The ASR contains about 3,500 microscopic solar cells that are able to convert light into electrical pulses, mimicking the function of cones and rods. To implant this device into the eye, surgeons make three tiny incisions no larger than the diameter of a needle in the white part of the ey...
Draw a chart of the current (or voltage) against time and you'll get a square wave. Although electricity varying in that fashion is, technically, an alternating current, it's not at all like the alternating current supplied to our homes, which varies in a much more smoothly undulating ...
Pulsed trickle is a variation in which the charger provides brief pulses of approximately C/8 magnitude, with a low duty cycle that provides a typical average trickle current of C/512. Because pulsed-trickle charging applies to both nickel chemistries and lends itself well to the on/off type ...
Figure 7. Main paced-loop flow chart. Hardware Fail-Safe ReminderBefore exploring some examples, one final recommendation is to consider the use of a µP supervisor with a watchdog timer and a hardware fail-safe system. The supervisor's reset function provides a clean system reset when the ...
By looking at lots of people, eye doctors have decided what a "normal" human being should be able to see when standing 20 feet away from an eye chart. If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what a "normal" human being can...
Left: burst firing in current-clamp in the same GRP neuron in response to the same blue light stimulation. (B) Repetitive light stimulation (five 4 ms pulses at 25 intra-burst frequency, repeatedly delivered at 0.5 Hz) of Grp-ChR2 neurons mimicked burst-like firing in response to input ...
By looking at lots of people, eye doctors have decided what a "normal" human being should be able to see when standing 20 feet away from an eye chart. If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what a "normal" human being can...
By looking at lots of people, eye doctors have decided what a "normal" human being should be able to see when standing 20 feet away from an eye chart. If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what a "normal" human being can...
By looking at lots of people, eye doctors have decided what a "normal" human being should be able to see when standing 20 feet away from an eye chart. If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what a "normal" human being can...
Figure 7. Main paced-loop flow chart. Hardware Fail-Safe Reminder Before exploring some examples, one final recommendation is to consider the use of a µP supervisor with a watchdog timer and a hardware fail-safe system. The supervisor's reset function provides a clean system reset when the...