EnrgTech

Oscillators Oscillators are very important electronic circuits without which computers, clocks, quartz watches and radios would be rendered inoperable. Oscillators produce periodic, oscillating electronic signals mostly sine waves or square waves depending on the component values. This makes them very good sources of repetitive AC. For an  oscillator  to produce AC, it only requires a D.C supply. The signal generated by an oscillator, whether sine wave or square wave, has aconstant amplitude. Types of oscillators Oscillators are categorized based on the signal they produce. Sine wave oscillator – Produces sine waves Relaxation oscillator – Produces square and rectangular waves Sweep wave oscillator – Produces sawtooth waves Parts of an oscillator Oscillators are mostly made up of three basic parts; Amplifier – This is mostly a voltage amplifier and can be biased in class A, B or C Wave shaping network – This is made up of passive components like filter...

Internet of Thing (IoT) is taking over the world quite fast. This interconnection of physical devices relies on 2.45GHz short range radio transmission systems. These systems include both the Bluetooth and the Zigbee technologies. While these technologies have good wall penetration, their range often causes numerous challenges. Designers now integrate several manufacture parts together to come up with solutions to boost the range of the 2.45GHz wireless systems. Boosting 2.45 GHz radio systems Mesh networking Mesh networking involves the bouncing of signals between dozens or even hundreds of nodes so as to spread a network connection over a large area. Nodes are small radios that perform similarly to wireless routers. These nodes utilize Wi-Fi standards (802.11 a/b/g/n/ac range) to communicate both with each other and with users. They are programmed with a software that guides how they interact with each other within the network. This software also enables the nodes to auto...

DC motor controller Remote controlled cars are every kid’s dream toy. Well, some adults too still derive pleasure toying around with them, you can never outgrow then really. The ability to rapidly accelerate, decelerate, make crazy turns and in some instances flips, is what makes these toys worthwhile. At the heart of all these controls is the DC motor controller. A  DC motor controller  is a device that acts as an intermediary between the motor, microcontroller, and batteries. There are three types of motors; Brushed DC motor controllers First pick on the control method you need (R/C, Serial, Analog Voltage, Multiple, PWM) and then Servo motor controllers When choosing a brushed DC motor, you will need to consider the number of connections, the total power output, and peak voltage. Stepper motor controllers When picking a stepper motor, you choose between a unipolar and bipolar. Also, consider the input voltage and maximum current. Uses of DC mot...