Power LED s simplest light with constant current

... 10 http://www.instructables.com/id /Power- LED_ s simplest- light- with- constant- current/ intro: Power LED& apos ;s - simplest light with constant- current circuit Here&apos ;s a really simple and inexpensive ($1) LED ... comments http://www.instructables.com/id /Power- LED_ s simplest- light- with- constant- current/ Home Sign Up! Explore Community Submit...

Ngày tải lên: 18/04/2014, 09:22

... turned off. B. Soft Switching Ideal semiconductor valve devices, such as MOSFETs or IGBTs, the switching operation is done in a moment, so the switching loss is zero. There is transition time in actual semiconductor ... current switch. The basic configuration of this switch is shown in Fig. 1. Four MOSFETs are connected in two parallel arms. Each arm con- sists of two MOSFETs connected in s...

Ngày tải lên: 15/10/2013, 16:11

... overall assessment of a child s health (as excellent, very good, good, fair or poor), which studies show corresponds closely with objective clinical assessments by health professionals. The focus ... and state levels was on the percentage of children ages 17 years or younger whose general health status was considered to be less than optimal—that is, assessed by their parents or guardia...

Ngày tải lên: 12/02/2014, 12:20

... process for strategy innovation in a corporate setting is not as simple as it sounds. This is especially true when the process ventures outside the current corporate strategy or business model. Escaping ... liberals, or some right-brain thinkers and some left-brain thinkers. Often teams will use standardized aptitude tests or per- sonality tests, such as Myers-Briggs, to help them define the...

Ngày tải lên: 17/02/2014, 04:20

... addressed depression, anxiety, emotional distress, psychological distress, depression symptoms, and mood as a subsection were also chosen. Due to the great deal of variability of these studies ... longitudinal studies used interviews, counseling sessions and surveys (Cain et al., 1983; Manne et al., 2007) with follow-up surveys (Manne, et al., 2007) or assessment interviews and surveys...

Ngày tải lên: 05/03/2014, 13:20

... and also within the same line. When we want to stress the dependence of the constants on some parameter (or parameters), we add subscripts to C, as C δ , etc Also constants with subscripts are allowed ... Adams inequalities. In this subsection we give some improvements of the Adams inequality (see [1] and [16]) and in particular we consider the possibility of dealing with operators P g po...

Ngày tải lên: 15/03/2014, 09:20

...

Ngày tải lên: 22/03/2014, 11:20

... response algorithm; Q is the user s query-generating algorithm; R is the user s response reconstruction algorithm; q is the user s actual query; s is the user s secret (associated with q); r is the database s ... 1024-bit numbers). Our scheme and security analysis is presented using general groups with hidden smooth subgroups; the scheme can be instantiated using compos- ite moduli...

Ngày tải lên: 23/03/2014, 12:20

... to assess or formally plan for care, they often serve as charge nurses in nursing facilities (IOM, 1996). Their major responsibilities include supervising the care by nursing assistants, passing ... transportation. The services include hands-on and stand-by or supervisory human assistance; assistive devices such as canes and walkers; and technology such as computerized medication reminders .....

Ngày tải lên: 28/03/2014, 17:20

... Huntingtin is ubiquitously expressed. Within neurons, huntingtin is found in the cytoplasm, within neurites and at synapses. It associates with various organelles and structures, such as clathrin-coated ... patient usually dies within 10 to 20 years after the first symptoms appear, as there is currently no treatment to prevent or delay disease progression. As the disease progresses, the...

Ngày tải lên: 30/03/2014, 23:20