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

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2
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21 views

Safe dead time limit on 19Khz PWM sine wave inverter

I'm buiding a 60Hz sine wave inverter based on 19Khz PWM generated by a PIC16F883 (lookup table) using a half bridge with 4 x IRF2807 - switching a pair of low-side/high-side. I'm using my own ...
0
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0answers
21 views

el inverter for 3.7V lipo battery [on hold]

Hello what kind of inverter can I use to drive Electroluminescent wire with 3.7 lipo battery? 3V inverter with one diode to drop 0.6V? thank you 🙏
1
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2answers
39 views

What could be the reason for failure in using a single-phase full-bridge square wave inverter to drive a coil for wireless charging?

I am working on a wireless charging project that needs a three-phase inverter. I built the inverter (with flexible wiring using connectors) myself and tested it as a single-phase full bridge converter ...
1
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1answer
45 views

How can FETs act as flyback diodes

Considering a 3 phase inverter using MOSFETs without body diode or GAN as transistors. How can the FETs safely emulate diodes? I mean I understand the transistors in question must be able to conduct ...
0
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0answers
46 views

Can I bypass these two adapters?

Scenario I have a LiPo battery connected to a DC > AC inverter and these two adapters (images below) are plugged into the inverter. Hypothesis Everything runs ...
1
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1answer
46 views

Charging a 12V battery bank while using it

I have (4) 12V 190 Ah AGM batteries connected in series. I want to run a portable A/C unit through a 2000 watt inverter connected to those batteries and charge the batteries simultaniously with a ...
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0answers
34 views

Operating frequency of RD15VHF1 and 1N5822

I am currently building an inverter circuit and a rectifier circuit. I proposed to use RD15VHF1 and 1N5822 in the circuit because my target is to operate the circuit in the range 500kHz to 1.5MHz. In ...
1
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2answers
146 views

Double polarity pulse with one single power source and virtual spdt switch

I have a problem in the design or my circuit. I need send data at a maxixum bitrate of 12000 bits /second. The high value should be +12v and the low value should be -12v providing at least 35mA of ...
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0answers
34 views

Hydrometer vs inverter and charge controller readings

I am using five 100 amp, lead acid batteries to run a dc portable cooler. It draws about 50 watts per hour. I have 150 watts of solar panel dedicated to this system. I live on the equator so I have 10 ...
0
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1answer
77 views

How sine wave is generated in wien bridge oscillator? [closed]

It is known that the initial feedback signal is developed from the noise in the resitors and the transients of the power supply. The question here is : why the waveform at the output is sine wave ...
0
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1answer
38 views

Wire size for battery interconnects

I'm putting together a bank of 3 batteries, connected in parallel for use in a solar PV system. The primary load will come from a 1000W inverter (2000w surge). The inverter manual recommends using a ...
0
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1answer
81 views

MOSFET inverter switching losses/events - 3-phase motor

To keep this simple, let's focus on one half-bridge which supplies sinusoidal current to the motor. Q1 is the high side MOSFET and Q2 is the low side MOSFET. SPWM outputs change twice per period - so ...
1
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1answer
52 views

Switching between two devices

I want to switch (toggle) two devices using one GPIO pin and basic components. To achieve that I designed circuit containing one FET driving first device and two FET transistors for driving second ...
-4
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0answers
29 views

What conversion topology is used in the following image?

We had a broken microinverter and we just opened it up. Its made by a chinese manufacturer. I'm just curious to know what conversion topology is used in this product.I first thought it uses full ...
1
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1answer
37 views

Need for inverter chain to decrease rise and fall time in a comparator

I was designing a MOS comparator for my laboratory and I could not understand how an inverter chain helps in increases the slew rate across the load capacitor. And why an inverter chain ? why cant a ...
1
vote
1answer
73 views

Why is the motor phase current like this in six-step BLDC drive?

I am using the inverter circuit I posted before Inverter in this previous thread to drive a BLDC motor. However, the current waveforms have some strange shapes that I couldn't understand. Below is the ...
1
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1answer
34 views

Inverter Generator Watt Question

I'm not sure how to search this so hopefully someone will answer. I'm rigging a floundering boat for my son and want to use LED light bars on the front and sides. I want to power then with an inverter ...
-2
votes
0answers
49 views

12 V= to 230 V~ boost inverter

I'm trying to build an inverter which consist of two circuit. Those are * a dc-dc boost converter and * a full bridge inverter. When I try to combine both circuits in a simulation and in hardware I ...
0
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1answer
48 views

Divert excess PV energy to floor heating in off-grid cabin?

I'm building an off-grid summer cabin with a solar PV system. I'm planning on using this equipment: 3 kWp PV panels BlueSolar 150W/70A MPPT charge controller Victron Multiplus 3000W inverter 4 x 303 ...
0
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1answer
38 views

In a solar power system, when the panel is off, does the battery determine the wattage?

I am considering putting together a solar system to power my wireless router when the power goes out. I just have one question that I cannot find the answer to: Does the wattage of the solar panel ...
0
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0answers
60 views

Bipolar Transistor H Bridge - low side NPN transistors slow to turn off

I've been trying to build an H-Bridge from bipolar transistors. Here are my parts for the schematic below Q1, Q2 - A1694 Q3, Q4 - C4467 Q5, Q6, Q7, Q8 - 2N5551 R2, R3 - 100 ohm R5, R6 - 50 ohm R9, ...
0
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1answer
20 views

lipo pack to 16vac inverter design

Im looking to drive a 16 vac solenoid from a battery pack. Specifically I want an electric door catch to function when mains are down. I want to do this with out with out using a commercial UPS. Im ...
2
votes
2answers
82 views

How “slow” is a Class T “slow blow” fuse?

I have a DC inverter that's rated for 3kw sustained with a 6kw peak (for up to 5 seconds). Per the Inverter manual, the manufacturer recommends a battery fuse rated for "at least 350 amps". How can ...
0
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2answers
62 views

powering op amp current

I think this might be a bit of a stupid question, but I've got a bit of mental block on it. I'm trying to power a CA3140 op-amp. I have a 12V source, and an AMD660 inverter to provide the negative ...
0
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1answer
34 views

Why LTspice is showing singular matrix error in the following inverter circuit?

While simulating this circuit I am getting an error of singular matrix. Any advice?
1
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3answers
60 views

Creating a +5V/-4V Clock with a PIC Micro

I'm working on a project to drive a CCD array which needs a particular signal with a high of +5V and a low of -4V, changing fairly rapidly. I'm using a PIC18F4620, which as far as I'm aware, looking ...
1
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1answer
46 views

Will this crystal-driven inverter successfully produce AC current?

The basic idea of this is that the crystal X1 and filtering caps C1 and C2, will produce a simple square wave that feeds into the NPN transistor Q1. When Q1 is on, the input voltage that Q2 and Q4 ...
0
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1answer
63 views

One battery discharges faster than the other in my solar power system

So, I have solar power system and it is as follows: 2 AGM batteries each 100 Ah 2 solar panels 24-Volt , 250 Watts each a controller an inverter the batteries are connected in series to give a ...
1
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1answer
49 views

Negative voltage from positive output DC/DC

my DC/DC ( http://www.ti.com/tool/PMP10077 ) has 200 V output on pins +HV and GND. Can I get negative output by simply swithcing the meaning of output pins -> I will use +HV as GND, and GND as +HV. I ...
0
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1answer
44 views

Starting the VFD from a specified frequency instead of 0 Hz [closed]

I have Hyundai N100 inverter. PLC is sending 0-10V analog signal to the inverter. It starts from 0 Hz and then reaches the maximum frequency of 50 Hz. Now i want it to start from 40 Hz instead of 0 Hz ...
-1
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1answer
47 views

How to reduce VOC of solar panels to match the MPPT of inverter

I will have an off grid solar panel system to run my deep well 5,5 Hp water pump. I already got 24 of 250Wp 36,3 Voc panels and 3 phase Delta VFD C2000 inverter/driver. for this system I need to wire ...
0
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2answers
70 views

Simulation for Wireless Power Transfer works fine, Prototype on breadboard doesn't

I am working on a Solar Powered Wireless Power Transfer project. The simulation for the circuit I am working off of works really well. I have built this design and others on a breadboard but I am ...
0
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2answers
31 views

Why there is continuous variation in output frequency of a Hitachi Inverter (L100 Series)? [closed]

I am using a Hitachi L100 Series inverter and its frequency source is Keypad Potentiometer. During run it is continuously changing the output frequency which is displayed on the Operator Display ...
6
votes
2answers
95 views

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 ...
0
votes
2answers
55 views

PV solar panel inverter

I am designing an inverter for a project. The main focus of the project is to design a standalone inverter that is able to produce variable voltage output. A secondary aim is to have the system solar ...
0
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2answers
65 views

Need help with inverter

I am wondering if it is possible too hook up an oxygen concentrator in my car for longer than normal trips. My gf needs 10 to 15 liters but can maybe get away with 10 (1 machine) for a drive. The ...
0
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1answer
88 views

Help comparator circuit for this PWM signal inverter

I have 2 signal (signal on the left) and how to combine those 2 signal into the signal on the right, I have try using lm 741 op amp, but unfortunately the output signal is different from the signal(...
1
vote
1answer
48 views

Add line in to electret microphone and mute the microphone when plug is connected

I have a megaphone with an electret microphone. I want to modify the megaphone so that I can optionally conntect a notebook's headphone out to the megaphone. So I want to add a line in connector to ...
0
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1answer
25 views

High voltage in electrical grid and Inverter's voltage output range

I have an 24 V inverter. In the manual i've read that this inverter will bypass the electrical grid voltage in the range 170V-280V. So with other words , when the electrical grid's voltage goes (for ...
2
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2answers
139 views

Synchronizing a diesel generator with a pure sine wave inverter

As the title reads, I'm trying to understand the best (Practical) way to synchronize a diesel generator with a pure sine wave inverter, in order to implement an automatic synchronizer based on ...
0
votes
1answer
121 views

What is the type of my batteries?

I have an inverter that requires to set the batteries type. The inverter accept 3 kind of batteries : AGM , GEL , FLD. But i can't find any information on my batteries about these types. The only ...
0
votes
1answer
87 views

Can a piezoelectric inverter for CCFL work for similar sized neon tubes?

I've done some backlight work for instrument displays using CCFLs and designing custom drivers (12 Vdc to ~1000 Vac) so I have some experience with these designs. Recently a friend of mine was ...
1
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1answer
23 views

When using conventional means to control a heating element, how does it affect the peak required VA?

This question is similar to two others, here and here, but with a small difference. To allow a bit of context: Suppose I have a winters day with lots of sunshine. I have an off-grid PV system, and ...
1
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2answers
69 views

Which oscilloscopes can reliably measure losses in an inverter for an AC motor?

For my next project at my workplace I am looking for an oscilloscope which gives me good support in measuring the losses in one of the half-bridge switches over one commutation period. The last time I ...
-2
votes
2answers
67 views

Live wire in square wave inverter

I have a square wave inverter, as you can see in following pic when i test live wire in square wave inverter, both output wires appeared as live wire but my pure sine UPS have only one live wire, why?
1
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1answer
85 views

How to - LiPo Battery supporting many devices?

I have a number of devices that I need to support off of this 11.1v 6400mah LiPo battery: Venom 20C 3S 6400mAh 11.1V LiPo Battery with Universal Plug (EC3/Deans/Traxxas/Tamiya) I'm wanting to ...
1
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2answers
62 views

What does a Schmitt Trigger inverter act as when unpowered?

I assumed that a Schmitt Trigger inverter would act as an open circuit when unpowered, but discovered today that this is not the case. What does a Schmitt Trigger inverter act as when unpowered? I'm ...
0
votes
1answer
41 views

Direct control over Real and Reactive charge/discharge in a battery/inverter AC system

In a paper (page 31) discussing the installation of a battery(*) in an electricity substation, UK Power discuss the ability to control the real power and reactive power components. They go so far as ...
1
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0answers
37 views

Contact selection for grid-tie inverter disconnect relay

A single contact will be inserted in-line with the Active connection, between a 240V grid-tie inverter and its circuit breaker in the switchboard. Is it correct to assume that the inverter presents ...
0
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1answer
43 views

48VDC to 240VAC daisy chain inverters

Is it possible to daisy chain smaller inverters to achieve a higher overall output power? For instance if I have a 48VDC battery bank and I want to power a large compressor at 240VAC it will need a ...