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Depends on the device. For instance almost all laptop power supplies use a international (aka universal) switch mode power supply. They don't care about modified sine wave output at all!
Almost all low-cost inverters use a step-wave output that approximates a RMS sine wave (like wall voltage). This is a double square wave with a gap between the negative going and positive going squares. The inverter companies call this "modified sine" which is kind of a misnomer used as a marketing term. The more expensive inverters use a high-frequency Class-D amplifier to produce a more accurate approximation of a sine wave. It's usually not "pure", as it has some amount of harmonic distortion, but for marketing reasons they try to distinguish their product from the "modified-sine" by using the "pure sine" misnomer.
The front end of all switch-mode power supplies rectify the incoming AC into DC as a first step in conversion. Step wave rectifies just as well as a normal sine wave! The ONLY reason to run "pure sine" inverters is if you are running sensitive audio gear with linear power supplies, as step-wave will induce a buzzing noise in the audio signals whereas the smoother approximation will not.
Don't believe the hype that the "pure sine" inverter companies promote, it simply isn't true. The only things that are dangerous to run on step-wave are things with triac devices or capacitor-based power supplies. This includes things like Dewalt power tool chargers, light dimmers, etc. If it's extremely light (feels like there's nothing in it), and/or it has a 120V rating only, then it's probably not safe for step-wave use. Dewalt chargers have been known to fail and overheat on step-wave!
If your power supply has a wide input voltage, such as almost all laptop supplies (100-240v), it is a universal switch mode supply and therefore safe. This includes most small electronics chargers, like for phones, iPods and cameras. If the voltage requirement reads only 120V and it's NOT a heavy "wall-wart" type supply, it's probably not safe. Check your nameplates!
If your device has sound such as a TV or Stereo and it emits a buzzing sound out of it's speaker when you run it on step-wave, then that's not harmful, but is an annoying side-effect. You can buy the more expensive "pure-sine" model if this is undesirable.
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Explain about multi-step inverter?
An inverter is designed to provide an AC voltage from a battery or DC supply. The AC voltage provided varies in waveform makeup from a square wave to a true sine wave. In between the two extremes are the multi step devices that have as many steps in their modified sine wave as they have switching devices needed to provide each step. Multi step inverters with as many as 48 steps have been manufactured to produce a relatively clean AC waveform.
How can two square waves be combined in an electronic circuit?
If they are the same voltage a logic gate could combine them in various ways. A ring modulator fed from two square waves would make interesting sounds. An op-amp would combine the waves. A single fet would combine them. One signal flowing from source to drain modulated by the second frequency applied to the gate.
Need cheats for dead space ps3?
Here is a list of all the cheats in Dead Space PlayStation 3 version. To activate a cheat, pause the game and enter a cheat code.Refill Stasis energyPress Square, Triangle, Triangle, Square, Triangle.Refill oxygenPress Square, Square, Triangle, Triangle, Triangle.+2 Power NodesPress Triangle, Square, Square, Square, Triangle.+5 Power NodesPress Triangle, Square, Triangle, Square, Square, Triangle, Square, Square, Triangle, Square, Square, Triangle.+1,000 CreditsPress Square, Square, Square, Triangle, Square.+2,000 CreditsPress Square, Square, Square, Triangle, Triangle.+5,000 CreditsPress Square, Square, Square, Triangle, Square, Triangle.+10,000 CreditsPress Square, Triangle, Triangle, Triangle, Square, Square, Triangle.
Where does Africa fall if you arrange the continents in order by size from largest to smallest?
1. Asia - 17,139,445 square miles (44,391,162 square km)2. Africa - 11,677,239 square miles (30,244,049 square km)3. North America - 9,361,791 square miles (24,247,039 square km)4. South America - 6,880,706 square miles (17,821,029 square km)5. Antarctica - 5,500,000 square miles (14,245,000 square km)6. Europe - 3,997,929 square miles (10,354,636 square km)7. Australia - 2,967,909 square miles (7,686,884 square km)
1800 square yards equals how many sq feet?
1,800 square yards = 16,200 square feet.
