EK Technologies

  ARDUINO COMMANDS Basic Arduino IDE Commands 1.  pinMode(x, OUTPUT); Configure or assign the pin number x as an output pin. Where x is the digital pin number on the arduino device which you intend to use as an output. 2.  pinMode(x, INPUT);   Configure or assign the pin number x as an input pin. Where x is the digital pin number on the arduino device which you intend to use as an input. 3.  digitalWrite(x, HIGH); Turn the digital pin number x ON or as HIGH. Where x is the digital pin number on the arduino device which you intend to turn ON. Note that turning it HIGH gives out a voltage of 5V at that digital pin. So this can be used to turn on or drive some devices connected at the pin e.g LED, activating relays for driving circuit, etc. 4.  digitalWrite(x, LOW); Turn the digital pin number x OFF or as LOW. Where x is the digital pin number on the arduino device which you intend to turn OFF. Note that turning it LOW gives out a voltage of 0V at that digital...

 Power Semiconductor Devices in Power Electronics Power electronics refers to control and conversion of electrical power by power semiconductor devices whereby these devices operate as switches. Power electronics run over a broad field of application such as in drives applications, Switch-mode power supply (SMPS), aviation electronics, high frequency inverters and power electronics, Electric power transmission, Automotive electronics, Uninterruptible power supplies (UPS), Alternative power sources controllers  etc. Power Semiconductor Devices (Switches) Power switches operates in two states (modes). This is shown in the figure 1 below: -  ON state (Conducting mode): this is when the switch closed.   -  OFF state (Blocking state): this is when the switch is opened. Figure 1: switching states of a power semiconductor switch Note: Power switches don’t operates in linear mode. Classification of Power Switches Power switches are classified in three groups. Namely: -...

  MULTIPLEXER we are going to see more complex combinational logic circuits or combinational devices which are the multiplexer and demultiplexer. These devices are can be found as integrated circuits (ICs) and are widely used in the field of telecommunication like in multiplexing. WHAT IS A MULTIPLEXER? A multiplexer also called data selector is a device that selects one of many input signals and forwards the selected input to the output. A multiplexer of 2 n inputs has n select bits, which are used to select which input line to send to the output.   See figure 1. An electronic multiplexer makes it possible for several signals to share one device or resource like one communication line instead of having one device per input signal. An example can be in a cyber where many computers are connected to the same printer, another example is an mp3 player, laptop, digital cable TV connected to a single surrounding sound system through a Mux.