Electronics FAQ

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

Why are transformers rated in VA and not watts? 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

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

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

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

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

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

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

If Amplifier Output Is AC, Why Do Speakers Still Have polarity? Why speaker polarity is important ? Because mismatch in speaker polarity can generate a destructive interference that is not good for audio output.

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. ..

Staircase Wiring Diagram - Controlling a Bulb from 2 Places Learn how to wire two switches to control one light fixture safely. Step-by-step 2-way switch wiring diagram, tools, and safety tips.

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