Trong một hệ thống truyền thông, dữ liệu được truyền từ một điểm này đến một điểm khác bằng ý nghĩa của các tín hiệu. Một tín hiệu tương tự là một dạng sóng điện từ biến đổi một cách liên tục được truyền qua nhiều môi trường truyền khác nhau phụ thuộc vào phổ của chúng.
Asking Google for different applications of electrolysis, interesting results can be noticed: electrolysis and hair removal - about 284 000 000 web pages, water electrolysis - about 7 440 000 web pages and industrial electrolysis - about 2 540 000 results. In this book three most important applications of technological electrolysis are discussed - water electrolysis (hydrogen production), industrial electrolysis and environmental electrolysis.
The 555 timer is one of the most useful electronic devices in the
market. The 555 timer was first introduced by Signetics but today it is manufactured
by nearly all semiconductor firms. The cost of this device is low
and it is widely available. The 555 timer has lots of uses such as: Mark Space
Adjustment, Pulse Width Modulation and Inductive Current Detection just
to name a few. The 555 has some unique advantages and capabilities, such as: low-cost, high
operating voltage (5-15V) range, it is high powered and at the same time able to
be triggered by small currents.
This book contains chapters on nanocomposites for engineering hard materials for high performance aircraft, rocket and automobile use, using laser pulses to form metal coatings on glass and quartz, and also tungsten carbide-cobalt nanoparticles using high voltage discharges. A major section of this book is largely devoted to chapters outlining and applying analytic methods needed for studies of nanocomposites. As such, this book will serve as good resource for such analytic methods.
Uncontrolled Single-Phase Rectiﬁers
Single-Phase Half-Wave Rectiﬁers
Operation A single-phase half-wave rectiﬁer consists of a single diode connected as shown in Fig. 4.1. This is the simplest of the rectiﬁer circuits. It produces an output waveform that is half of the incoming AC voltage waveform. The positive pulse output waveform shown in Fig. 4.1 occurs because of the forward-bias condition of the diode. A diode