Connect with us

Sine vs Square Wave Inverter

Discussion in 'Electronic Design' started by jsmith, Jul 21, 2004.

Scroll to continue with content
  1. jsmith

    jsmith Guest

    What benefit does a fairly pure sine wave inverter have over a very
    symetrical square wave for any given application.
     
  2. jsmith escreveu no sci.electronics.design:
    Some electronics don't like square waves, they need the sine waves.
    That is no the case for the TV, computer monitor... because they use
    the SMPS power supply where AC is turned into DC.
     
  3. Bob Wilson

    Bob Wilson Guest

    First of all, essentially no one makes a squarewave inverter. What is on the
    market are so-called Quasi-sine or Modified-sine types. These are basically
    squarewave, but VERY IMPORTANTLY have a certain amount of dead time (10
    to 15%) between half cycles. A pure squarewave inverter, if it not EXACTLY 50%
    duty cycle can cause a lot of problems such as saturating inductive loads,
    resulting is destrucion of the load or the inverter.

    Pure sinewave inverters as compared to Quasi-sine types offer the following
    advantages: Less heating of motor loads. Greater ease of starting many loads
    such as motors, especially when the motor is under load. Far less EMI
    (interferance on TVs etc.). Ability to power highly reactive loads with ease,
    such as microwave ovens; typically a microwave oven requires a higher power
    quasi-sine inverter than if you power it with a true sine device. etc. etc.

    Bob.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-