General and Inorganic Chemistry
... 3. III Basic laboratory procedures and methods ............................................................................... 20 1. III.1 Basic guidelines for working with hazardous materials .............................................. 20 1.1. III.1.1 Laboratory safety .......................... ...
... 3. III Basic laboratory procedures and methods ............................................................................... 20 1. III.1 Basic guidelines for working with hazardous materials .............................................. 20 1.1. III.1.1 Laboratory safety .......................... ...
57 estonian national chemistry olympiad
... element A and nonmetal X, used in cleaning means; molecular formula of B can be written as AX3. If gas B is heated in hydrogen atmosphere, elementary compound A If formed. A is also formed by thermal decomposition of iodide AI3 and in reaction of oxide A2O3 with magnesium. The second product in thre ...
... element A and nonmetal X, used in cleaning means; molecular formula of B can be written as AX3. If gas B is heated in hydrogen atmosphere, elementary compound A If formed. A is also formed by thermal decomposition of iodide AI3 and in reaction of oxide A2O3 with magnesium. The second product in thre ...
MAX8790A Six-String White LED Driver with Active General Description
... phase-locked loop (PLL) circuit translates the PWM signal into an analog signal and linearly controls the LED current down to 12.5%. Below 12.5%, digital dimming is added to allow lower average LED current down to 1%. Both control methods provide 100:1 dimming range. The MAX8790A has multiple featur ...
... phase-locked loop (PLL) circuit translates the PWM signal into an analog signal and linearly controls the LED current down to 12.5%. Below 12.5%, digital dimming is added to allow lower average LED current down to 1%. Both control methods provide 100:1 dimming range. The MAX8790A has multiple featur ...
Molecular structure and reactivity of the Group V metal oxides
... monolayer on various oxide supports (e.g., Al2 O3 , TiO2 , ZrO2 as well as Nb2 O5 and Ta2 O5 ). For supported vanadia catalysts, the active surface sites were essentially redox sites, with the exception of supported V2 O5 /Al2 O3 that also contained strong acidic sites. For supported niobia and tant ...
... monolayer on various oxide supports (e.g., Al2 O3 , TiO2 , ZrO2 as well as Nb2 O5 and Ta2 O5 ). For supported vanadia catalysts, the active surface sites were essentially redox sites, with the exception of supported V2 O5 /Al2 O3 that also contained strong acidic sites. For supported niobia and tant ...
Fragmentation Dynamics of Small Molecules upon
... imaging of non-crystalline objects and the opportunities of ultrafast time-resolved experiments with X-rays. Two basic limitations of conventional X-ray crystallographic imaging are, on the one hand, radiation damage (i.e., a change in the electronic structure and the nuclear positions) induced by X ...
... imaging of non-crystalline objects and the opportunities of ultrafast time-resolved experiments with X-rays. Two basic limitations of conventional X-ray crystallographic imaging are, on the one hand, radiation damage (i.e., a change in the electronic structure and the nuclear positions) induced by X ...
For metals
... DO NOT CRAM. Get your studying done with by the night before. Get a good night’s sleep and have breakfast the morning of the exam. Use a review book with old exams, answers and explanations in it. Take the old tests and grade yourself. The questions you don’t understand why you got wrong make sure t ...
... DO NOT CRAM. Get your studying done with by the night before. Get a good night’s sleep and have breakfast the morning of the exam. Use a review book with old exams, answers and explanations in it. Take the old tests and grade yourself. The questions you don’t understand why you got wrong make sure t ...
MAX5922 +48V, Single-Port Network Power Switch For Power
... the output voltage and current slew rate to minimize EMI (electromagnetic interference). The MAX5922 has an integrated 0.45Ω N-channel power MOSFET that provides efficient operation and simplified system design. The MAX5922 monitors and provides current-limit protection to the load at all times. The ...
... the output voltage and current slew rate to minimize EMI (electromagnetic interference). The MAX5922 has an integrated 0.45Ω N-channel power MOSFET that provides efficient operation and simplified system design. The MAX5922 monitors and provides current-limit protection to the load at all times. The ...
TOPIC 7. CHEMICAL CALCULATIONS I
... than counting atoms or molecules. To illustrate this need by analogy, consider our method of counting money. Use of cents as the basic unit of amount of money would be limited to only very cheap purchases - indeed the smallest coin now in use is the 5 cent piece. Instead, most of our transactions ar ...
... than counting atoms or molecules. To illustrate this need by analogy, consider our method of counting money. Use of cents as the basic unit of amount of money would be limited to only very cheap purchases - indeed the smallest coin now in use is the 5 cent piece. Instead, most of our transactions ar ...
Chapter 5 The Field
... circuits. In this chapter, we introduce the second major type of transistor, the ®eld-effect transistor (FET). There are two general classes of FETs: the metaloxide-semiconductor FET (MOSFET) and the junction FET (JFET). The MOSFET has led to the second electronics revolution in the 1970s and 1980s, ...
... circuits. In this chapter, we introduce the second major type of transistor, the ®eld-effect transistor (FET). There are two general classes of FETs: the metaloxide-semiconductor FET (MOSFET) and the junction FET (JFET). The MOSFET has led to the second electronics revolution in the 1970s and 1980s, ...
AAT1239-1 数据资料DataSheet下载
... The LED current is digitally controlled across a 6x operating range using Skyworks’ Simple Serial Control (S2Cwire™) interface. Programmability across 26 discrete current steps provides high resolution, low noise, flicker-free, constant LED outputs. In programming AAT1239 operation, LED brightness i ...
... The LED current is digitally controlled across a 6x operating range using Skyworks’ Simple Serial Control (S2Cwire™) interface. Programmability across 26 discrete current steps provides high resolution, low noise, flicker-free, constant LED outputs. In programming AAT1239 operation, LED brightness i ...
preview as pdf - Pearson Higher Education
... electric field produced by that distribution at a point P?” We saw that the answer could be found by representing the distribution as an assembly of point charges, S each of which produces an electric field E given by Eq. (21.7). The total field at P is then the vector sum of the fields due to all t ...
... electric field produced by that distribution at a point P?” We saw that the answer could be found by representing the distribution as an assembly of point charges, S each of which produces an electric field E given by Eq. (21.7). The total field at P is then the vector sum of the fields due to all t ...
BDTIC
... The Gate of the low-side MOSFET in a half-bridge inverter topology is controlled by this pin. There is an active L-level during UVLO (undervoltage lockout) and a limitation of the max. H-level at 11V during normal operation. Turning on the MOSFET softly (with reduced diDRAIN/dt), the Gate drive volt ...
... The Gate of the low-side MOSFET in a half-bridge inverter topology is controlled by this pin. There is an active L-level during UVLO (undervoltage lockout) and a limitation of the max. H-level at 11V during normal operation. Turning on the MOSFET softly (with reduced diDRAIN/dt), the Gate drive volt ...
ADP2114 Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
... regulator that satisfies a wide range of customer point-of-load requirements. The two PWM channels can be configured to deliver independent outputs at 2 A and 2 A (or 3 A/1 A) or can be configured as a single interleaved output capable of delivering 4 A. The two PWM channels are 180º phase shifted t ...
... regulator that satisfies a wide range of customer point-of-load requirements. The two PWM channels can be configured to deliver independent outputs at 2 A and 2 A (or 3 A/1 A) or can be configured as a single interleaved output capable of delivering 4 A. The two PWM channels are 180º phase shifted t ...
Nanofluidic circuitry
Nanofluidic circuitry is a nanotechnology aiming for control of fluids in nanometer scale. Due to the effect of an electrical double layer within the fluid channel, the behavior of nanofluid is observed to be significantly different compared with its microfluidic counterparts. Its typical characteristic dimensions fall within the range of 1–100 nm. At least one dimension of the structure is in nanoscopic scale. Phenomena of fluids in nano-scale structure are discovered to be of different properties in electrochemistry and fluid dynamics.