Modified Sine Wave Current: Good Or Bad?

This post is based entirely upon the author’s personal experience with modified sine wave current.

I have used few electronic devices with modified sine wave current and I have observed reduced life span and low efficiency. The experience is based upon the use of DVD player, CRT monitor, TV tuner and desktop computer on modified sine wave UPS. DVD player and TV tuner got malfunctioned within the warranty period. CRT monitor and motherboards of desktop computer failed before their average expected life.



The other experience regarding modified sine wave current is to use it to run fans and stereo speakers during load shedding. Fans produce noise like they are angry with this current and stereo speakers give humming noise as a ”background music”. An electrical engineer told me that rectifiers of stereo speakers are leaking current but I don’t think this is the case. The reason could be rectifiers are not capable of rectifying modified sine wave current properly into direct current (DC) as these are designed for rectifying pure sine wave alternating current (AC). The same thing could be responsible for destroying motherboards which I have mentioned above as power supply of computer failed to make modified sine wave current a perfect direct current.



In my opinion, modified sine wave current is not good for the health of sensitive electronic devices. So, if you have expensive electronic machinery and you are suffering from power outages and you want extended life span for that machinery, buy UPS or Power inverter designed for inverting current of batteries into pure sine wave alternating current. Moreover, if you want to build solar energy system, preferably buy pure sine wave inverter for it.

Related Posts

Corrosion of Battery Terminals: Explanation, Cleaning & Prevention Sometimes, terminals or posts of lead acid batteries corrode due to which connection between batteries and appliance cuts off completely or weakens. I...
Methods For Circuiting UPS & Inverter With Home & Office Wiring Learn how to circuit UPS or Power Inverter with household appliances like fans, tube lights, energy savers, computers etc. Connect your office equipme...
Functions of Different Power Inverter/UPS Buttons, Switches Power Inverter is a device used to invert batteries direct current into alternating current for providing backup to different appliances when main ele...
What Causes Battery Terminals Corrosion in Car Major Causes: - Leaking electrolyte from cracks or loose joints. - Fumes of acid escaping battery through loose joints or vents. - Bad alternator/g...
How to Extend Batteries Backup & Life (UPS, Inverter & Car Battery) Lead-acid battery technology is one of the oldest rechargeable energy storage technologies still widely used around the world. From vehicles to power ...
Why Car, UPS or Power Inverter Battery is Not Holding Charge – Reasons & Soluti... Reasons: - Battery is old and worn out - Weather is cold that has increased self-discharge rate - Battery is new but abused - Car battery suffered...
Batteries in Series and Parallel Connections (Battery Packs) Making larger battery packs is often required to extend backup time or increase voltage to make certain devices work. For example, if you own solar po...
How to Stop and Protect Battery Terminals from Corrosion - Apply grease or petroleum jelly to battery terminals. - Use tin, silver or aluminum plated copper terminals. - Fix alternator/generator causing ov...

Add a Comment

Your email address will not be published. Required fields are marked *