Questions tagged [inverter]

Electrical device that converts direct current (DC) to alternating current (AC).

From Wikipedia: An inverter is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency depends on the particular device employed. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry.

Solid-state inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers to large electric utility high-voltage direct current applications that transport bulk power. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries.

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Why have two NOT gates in series?

I have recently been looking at the datasheets for the 74HC139 IC in order to see if it was suitable for my project, and have come across the following logic diagram which strikes me as a little bit odd: simulate this circuit – Schematic created…
Thomas Russell
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Can you make a CPU out of electronic components drawn by hand on paper?

I explored a lot of literature about paper-based electronics recently, and one particular paper caught my interest: “Handwritten Oxide Electronics on Paper” (DOI: 10.1002/admt.201700009) by Elvira Fortunato et al. It explains a method to make…
Zoé Martin
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Stopping electric arcs between layers in PCB - big PCB burn

Firstly, let me preface this with the fact that I am not interested in chastising the user, and I am not interested in looking at the original source of the arc (it was a tool accidentally breaching the power rails). This question is EXPLICITLY…
David Molony
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Why does inverter synchronization with the grid take 5 minutes?

We had some solar panels & an inverter installed recently. Every time the inverter is turned on (after maintenance or with the first light of the day) it has to synchronize its generation phase with the grid, and it is easy to understand. But why…
dvdmn
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Powering laptop from 12V sources without inverter

This question has two parts: 1) How inefficient is it to boost 12V to 120V and then back to 12V as in using a traditional car power inverter to power a laptop (i.e. the 12V car battery power is boosted to 120V by a power inverter and then back to…
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Electronic Drivers for Fluorescent Lamps: How is the DC-to-AC Conversion done?

Pretty much all (somewhat inaccurately named) electronic ballasts for fluorescent lamps run off a DC voltage and have to convert it into AC to operate the lamp. The DC supply can come from rectified AC mains (as seen in standard compact fluorescent…
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Could a modified sine wave inverter destroy/damage the AC adapter for a laptop?

I recently encountered a scenario where I attempted to use a Energizer EN500 modified sine wave inverter to provide power to a Dell 180 watt AC adapter. The circuit powering the inverter was 12 volt, 15 amps DC. The AC adapter input is 100-240V ~…
Josh
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Why are rectifiers-inverters used to drive AC motors instead of using the rectified current to drive DC motors?

I understand the advantages of using a rectifier-inverter system to drive an AC motor instead of simply plugging it into mains power, as it allows much better control of its speed and performance; but what I don't understand is: since the original…
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Extending the backup runtime of a UPS with an external car battery

I'm looking for a simple/inexpensive way to have a longer power backup time. My fist thought was putting 2 cheap UPSes in parallel. But I quickly found it's not that simple. You would need another device that synchronizes the waves, otherwise...…
GetFree
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Convert 5VDC to 400VDC

I'm currently making a geiger-counter and therefore I need to crank my 5VDC up to around 400 VDC, the current is very low, around 0.015-0.02 mA. What would be the best way to generate 400VDC from my 5v source?
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which kinds of electrical equipment need a pure sine wave inverter to work correctly?

I am planning to purchase a good inverter, and pure sine wave inverters cost about 3 times as much as modified sine wave ones of the same power. I am thinking about a 2000W continuous/4000W peak inverter 12/24VDC -> 230VAC. Which commonly used…
ria
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Do solar inverters dump excess generated energy as heat?

I have a off-grid solar system and it got me curious, how is my inverter able to know how much excess energy is being produced? I could not show the actual graph from the app but it's really close to this one: Looking at it with my limited…
Jake quin
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What's the difference between an inverter with a bubble at the input and one with a bubble at the output?

See this datasheet, page 2: the internal logic diagram for the MM74HC138. The diagram shows logic inverters with bubbles at the input or at the output. Is there an actual difference between them?
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Why two inverters cascaded in multiplexer control signal terminals?

Why cascaded inverters are used in the multiplexer when it is possible to realize the circuit using a single inverter.
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How does an inverter affect the computer?

I have rampant power failure in my country. So to mitigate, we have an inverter that basically converts the charge from a big lead-acid battery to AC. But as far as i know this doesn't produce pure sine AC. It is something close to sine. The output…
A User
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