Why is diode useful?

Diodes are essential semiconductor devices widely used in electronics for their ability to control the direction of current flow. They serve various critical functions in electronic circuits, making them highly useful components in modern technology. Diodes allow current to flow in one direction (forward bias) while blocking it in the opposite direction (reverse bias), a … Read more

Why is a neutral wire not connected in a motor ?

In three-phase motors, a neutral wire is not typically connected because these motors operate on a balanced three-phase power supply. Each phase of the motor is powered by one of the three phases of the electrical system, which are 120 degrees apart in phase angle. The three-phase system inherently provides a rotating magnetic field in … Read more

What can an inductor be used for in an electronic circuit ?

Inductors serve various purposes in electronic circuits due to their ability to store energy in a magnetic field and their behavior in AC and DC circuits. One common use of inductors is in filtering circuits, where they block certain frequencies of signals while allowing others to pass. Inductors are also crucial in energy storage applications, … Read more

Why do we need zero crossing detectors in some circuits?

Zero crossing detectors (ZCDs) are essential in circuits where precise timing and synchronization with the AC mains waveform are crucial. They detect the exact moment when the AC voltage crosses zero volts (zero crossing point) during each cycle of the AC waveform. This capability is necessary for accurately triggering devices like TRIACs, thyristors, and other … Read more

How are noise cancelling microphones able to work ?

Noise-cancelling microphones operate by actively reducing or eliminating unwanted ambient noise during audio capture. They achieve this through various technologies, including passive noise isolation and active noise cancellation (ANC). Passive noise isolation involves physical barriers and acoustic design elements that block or reduce external noise from reaching the microphone diaphragm. This method is effective for … Read more