A layer of silicon oxide (SiO 2) typically grows on a silicon substrate and a metal or polysilicon layer is deposited over it. If you observe, this acts as a…
A magnet is a coil of insulated wire that is wound on a rod-shaped form made of solid iron, solid steel or iron powder and generates a magnetic field when…
How to test a thyristor (SCR): Obtain a bench DC power supply with adjustable output voltage and current limit. For example 0–30Vdc 0–5A Set the power supply to around 30 Vdc…
A rectifier is an electrical device that consists of one or more diodes and converts alternating current (AC) to direct current (DC). A diode is like a one-way valve, in which electrical…
There are mutliple reasons for this: Tube amplifiers produce more even harmonics than solid state amplifiers. Solid state amplifiers, on the other hand, are rich in odd order harmonics. For some evolutionary…
Methods of electricity generation There are seven basic methods to convert other forms of energy directly into electrical energy: Static electricity through physical separation and charge transport (examples: triboelectric effect…
The current consumed by the LEDs is given by (Vin-Vf) / Rs which depends on the applied input voltage Vin, the direct voltage drop of the LEDs Vf and the…
VDC is an abbreviation for “Volt DC”. DC stands for “direct current”, which means that the voltage is constant (in contrast to alternating current, alternating current, in which the voltage oscillates…
There is always a tendency to choose a higher frequency to reduce the size of the inductor and capacitor to minimize the size of the converter. However, it does not necessarily…
There are basically two principles that govern a DC motor. How to repel poles of a magnet and tighten them differently. We have all played with magnets and are familiar with…
Advantages that a bipolar junction transistor has over a MOSFET? The collector current follows an exponential function of the base-emitter voltage very precisely and over a wide range (can be…
Earthing provides a low impedance ground path for power if an insult fails and a live cable comes into contact with an exposed part of a device, causing the device…
Motor protection is the isolation of the motor from the main supply in the event of an abnormal condition in the operating state of an motor (i.e. when the motor…