Questions tagged [inverter]
Electrical device that converts direct current (DC) to alternating current (AC).
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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How does an increase in operating frequency result in decrease in the size of an inverter circuit?
I was reading about inverters in a textbook where the author says that
The size and cost of the circuit can be reduced to some extent if the operating frequency is increased but then inverter ...
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What is the nature and history of UL capacitor recognition?
First, the background. I've been working on a grid-tied inverter design for some time now. General topology is:
We've just completed UL listing our product under 508c, and the process was quite ...
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H-Bridge blows the fuses in my house
Transistors: FDP18N50
Optocouplers: EL817B
I have been struggling with this for several days. I want to make a 230V AC/230V AC inverter that extends the wave to control the speed of a blower. When I ...
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What's the reason for large VA vs W difference in an inverter?
I'm using a new set-up of a 3.6 kW inverter with two 150 Ah gel batteries in series.
I don't understand why the inverter reports a much larger VA than the watts that are consumed. As I understand it, ...
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12 Volt from solar panel converted to 120VAC without battery
I have solar panels that will supply about 200 watts. (They are rated for 400 watts.)
I have a load that needs about 150 watts, 120 Volt AC, off grid, and only when the sun shines.
The 12 volt solar ...
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How bad is it to use 1N4007 as a bootstrap?
I have a moderately high power inverter board I've made. Standard 3 phase H-bridge with bootstrapped high side gate drivers. I've built a few, all have worked fine. They've all been pushing many ...
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How do I power a LCD Backlight inverter (got from a disasembled LCD screen) [closed]
I have two LCD Backlight Inverters lying around here and I want them to powerup without using any laptop part / motherboards.
I want to power it by using a simple power source, I have both AC and DC ...
user14179
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How is a PWM signal converted to Sine using a transformer?
How does a sine choke exactly function? In most high power inverter systems, the primary side of the output transformer is always driven by a PWM signal. The secondary output which is sent to a load ...
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Cascaded logic inverters
In this datasheet the logic diagram shows three cascaded inverters to get a simple inverting function.
So that would mean that you have three PMOS-NMOS pairs in succession. Why is this better than ...
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How do transistors replace the electromechanical switch in an inverter circuit?
Quoting from wikipedia:
"In one simple inverter circuit, DC power is connected to a transformer through the centre tap of the primary winding. A switch is rapidly switched back and forth to allow ...
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Is it ok to connect 60Hz inverter to 50Hz transformer?
I have a car inverter (DC 12 V to AC 240 V). Inverter's frequency is 60 Hz.
I want to connect the output (240 V) of the inverter to an transformer (AC 240 V to AC 16 V) which indicates input frequency ...
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What does the value "Z" in the function table for this inverter stand for?
I came across a simple hex inverter IC with the truth table having "z" as an output state for a low (L) input.
So what does Z stand for here? Does it mean a toggle or partial state?
The other variant ...
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What is this Z symbol on the PCB?
Does anyone know what this Z component symbol is? It was in my solar charger inverter and went up in smoke.
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Is DC-to-DC (24 V to 12 V) buck conversion typically more efficient than AC-to-DC (110 V to 12 V) conversion? [closed]
While building an online UPS system, I'm basing the choice to eliminate as many AC inverters from the system as possible because of the assumption that DC-to-DC conversion is more efficient than AC-to-...
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How does pulse or burp charging work?
I've been doing some research about how to fully charge a lead-acid and AGM battery. However I have some questions and need some guidelines for proper implementation.
Basically I am trying to find ...
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MOSFET Gate-Source protection question
I have seen different schemes in the three phase motor inverter design when people try to protect gate-source from high voltage as shown in the picture.
I understand the usage of zener diode to limit ...
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What constitutes a "sufficient" ground?
Electricity novice here. Thanks for reading!
I have a 3000 watt DC to AC inverter attached to a 12V battery bank. The inverter has "DC ground lug" on the exterior of the inverter's case which the ...
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Need help with the BLDC drive inverter circuit problem
I am building a BLDC drive circuit for a 24V/60W BLDC motor. I chose SI4564DY(P+N) and FAN3278 to realize it as shown below (I only include A+ and A-, B and C are exactly the same). The FB indicated ...
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Why the triangle reference wave is used in PWM for sine modulation?
I'm implementing PWM for a three-phase inverter.
The documentation on the subject, especially the technical implementations, is very good but as far as I am able to understand none of the one I read ...
5
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2
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Joining two AC inputs with different voltages
I have a project where we have to design a wind turbine. I currently have two 5 kW generators (https://wxftgs.en.alibaba.com/product/60689557542-804881319/5kw_permanent_magnet_generator_price....
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Transfer function of an RLC filter
I want to calculate the transfer function of the following low pass filter
simulate this circuit – Schematic created using CircuitLab
UPDATED Circuit
It is made from an inductor, the internal ...
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What happens when a grid tie inverter is out of sync?
Background:
I have a growatt sph6000 tl bl-us which is a split-phase hybrid solar inverter. I purchased this with the assumption that my grid was split-phase, with the two lines offset by 180 degrees. ...
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Solar panel voltage drops when connected to load
I have a 100 W solar panel with these specifications:
Optimum operating voltage = 18.1 V
Optimum operating current = 5.52 A
Voc = 22.1 V
Isc = 5.86 A.
I connected this solar panel directly to a 100 ...
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Why do we rectify then invert current in induction heaters?
I was trying to build a simple zone refining prototype, so I thought of How to simplifying induction heater for zone refining?
I throughly read What does a beginner need to know to build an inductive ...
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Simplest possible 5V to +/- 10-15V converter (for op-amps)
Im looking for simplest possible solution to power op-amps from USB or phone charger.
Requirements:
+5V input voltage
±10V to ±15V output voltage
at least 10mA output current on both rails (+/-)
...
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Self-oscillating inverter questions
I'm researching a good (and simple) driver for a HV transformer, and found this very simple and elegant circuit on the web:
It uses a feedback winding to turn transistors on in an alternating pattern....
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How do I apply PWM signal to the primary side of a transformer to get synthesized sine wave at the secondary side?
I'm trying to obtain a sinusoidal signal (\$f_{sin}=50Hz\$) by using a ferrite transformer. I am going to apply a PWM signal at the primary side (\$100kHz\le f_{PWM}\le300kHz\$). I'm going to use one (...
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Implementing a sine wave inverter with an oscillation circuit
I was thinking today about a whether it would be feasible to implement an inverter using a simple sine wave oscillator (perhaps op amp based or a Wien bridge implementation), a power amplifier stage ...
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Voltage used to charge a UPS-Inverter and its usage
I'm new to this area and know very little about electrons and how electrical components work. I'm always curious about Inverter/UPS usage.
I'm from India and we have a inverter at home. It is ...
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Can a solar inverter be damaged if installed capacity is much larger than demand?
I had a dispute with my fellow. In his opinion, a power inverter can be damaged if the load is much lower (e.g 100W) than installed capacity (e.g. 10kW) of the solar system.
I am of the opinion that ...
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Grid tie inverters and islanding
How do modern grid-tie invertes which are commonly found in solar pv panels and wind turbines actually stop islanding from occurring when the utility grid is down? I know there are a lot of methods ...
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Can you offer suggestions for this voltage interverting circuit?
I have come up with this circuit, mainly through experimenting and trying things out. It basically inverts Vcc into -Vcc (chiefly for using as a V- for things like op-amps and other such low-power ...
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Am I supposed to ground the inverter or the battery or both to the vehicle chassis?
I am setting up a solar system in a vehicle. I have 400W solar panels, a 12V battery bank, and a 2000W inverter. I've looked at the manuals and read online to figure out the wiring diagram below, but ...
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Simple Oscillator Designs
I want to be able to create simple oscillator circuits for clocking in digital circuits and am wondering what is the most simple design people know of?
I could use a simple ring oscillator which is ...
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Why does the UPS mode of an inverter have faster switching times?
Of all the sinewave inverters I have used, they contain a switch at the back labelled Normal and UPS. When you put the inverter in normal mode, there is some 40-50 ms switchover time, enough to make ...
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