Electronics FAQ

01/12/2025

https://electronicfaq.blogspot.com/2025/09/why-transformer-rating-in-va.html

Why transformers are rated in VA ? The reason is reactive power generated by a inductive load. So the power is load dependent that can not be in watts

25/11/2025

https://electronicfaq.blogspot.com/2025/11/how-does-vfd-convert-ac-to-dc.html

Learn how a VFD converts AC to DC using rectifiers and DC bus technology. Simple explanation for engineers, students, and electricians.

16/11/2025

https://electronicfaq.blogspot.com/2025/09/how-do-snubber-circuits-protect-relay.html

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This post explain how RC Snubber avoids sparking across relay contact thus reducing wear and tear of the relay contact for the inductive load

05/11/2025

What is Ohm's Law? Read further...
https://electronicfaq.blogspot.com/2025/09/understanding-ohms-law.html

04/11/2025

Why is there sparking across the switch for the Inductive load like a Fan? Read full story....
https://electronicfaq.blogspot.com/2025/09/the-sparking-across-switch-that.html

03/11/2025

Why speaker polarity is important in wiring the speaker... read further.
https://electronicfaq.blogspot.com/2025/09/why-speaker-polarity-is-important.html

Why speaker polarity is important ? Because mismatch in speaker polarity can generate a destructive interference that is not good for audio output.

02/11/2025

A Brushless DC Motor, or BLDC Motor, is an advanced type of electric motor that operates without mechanical brushes and a commutator.
https://electronicfaq.blogspot.com/2025/10/are-bldc-motors-ac-or-dc.html

02/11/2025

How to Wire 2-Way Switches to Control One Light Fixture | 2-Way Switch Wiring Diagram, Steps, and Connection Guide What is a two-way switch? You need ‘ Two Way ’ and not ‘three way’ as wrongly mentioned in the earlier answer. ..

Learn how to wire two switches to control one light fixture safely. Step-by-step 2-way switch wiring diagram, tools, and safety tips.

02/11/2025

A BLDC motor runs on DC voltage. We also find BLDC motors in Ceiling fans and washing machines that run on AC, but in that case, AC is first converted to DC by an SMPS or switch-mode Power Supply.

Are BLDC motors AC or DC? Learn brushless DC motor working, difference, advantages, and uses of BLDC, AC, and brushed DC motors.