The scientist Ampere has empirically discovered the interaction force for two parallel wires, dependent on the force being reversely perpendicular to the distance between…
Category: Learning
Smith Chart
The Smith Chart is shown in Figure 1. It is a very useful tool for solving the problems of RF engineers with regards to…
What is MEMS technology
This post answers the question: "What is MEMS technology?". MEMS (Micro Electro-Mechanical Systems) technology is a technology for creation of microscopic integrated devices and…
Power BJT – static characteristics
The power BJT static characteristics determine the safe operational regime of the device. These characteristics are usually described in the datasheet as maximum ratings.…
Introduction into industrial automation
This post covers topic of introduction into robotics and industrial automation. Industrial robots are machines controlled by integrated computer. Nowadays robots do the groundwork…
What is rotating electric machine
Rotating electrical machine consists of a stator, rotor and the air gap between them. Stator and rotor has windings . The rotor is installed…
BJT definition and characteristics
BJT transistor is a three terminal semiconductor device, based on three layers of p and n layers, with different doping concentration. BJT transistor can…
Magnetic induction vector circulation
There are two methods of magnetic induction B calculation. The first method is using the Biot-Savart-Laplace and induction superposition principle. The second method is…
Electromagnetic induction
In 1831 British physicist Michael Faraday was analysing all the cases of electromagnetic induction phenomena – phenomena of current induction in a conductor along…
Quarter-wave impedance transformer
The quarter-wave impedance transformer is a device that matches the transmission line and the impedance and is shown in Figure 1. Let's consider the…