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

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Negative Voltage Ccfl Inverter from AC Adapter

I have a CXA M10M-L ccfl inverter and I need negative voltage from its output, for anode ground scheme of a photomultiplier tube. I am confused because most discussions of this topic use batteries to ...
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4answers
60 views

HF transformer fed fed diode rectifier not working

As part of my pure sine wave inverter, I have a DC - DC subsystem in which a signal stepped up through a HF transformer is put through an uncontrolled diode rectifier to get a DC output which I am o ...
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1answer
37 views

24v vs 48v solar inverter

I have 4 batteries of 150AH each. Earlier these were connected as series to 48v solar inverter of 3000 Watts, now as that old inverter is dead and I need to replace it with new one. I want to know ...
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6answers
85 views

capacitor with fridge

I have a tricky question for you. I'm trying to operate a 100w fridge using solar power, a car battery and an inverter. The inverter says that it's 2000w but it most likely seems that its a 700w but ...
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4answers
105 views

can a simple diode and resistor in series qualify as an inverter? [closed]

I'm working on a single-sided PCB and I find transistor pins are too close together for tracks to run through, so I'm wondering if I could roll off my own inverter by using the cathode of a diode as ...
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1answer
16 views

How to accomplish parameterized subcircuits in LTSpice?

I am trying to play around with beta ratio effect of CMOS inverter. To do so I need to have parameterized subcircuit so I can adjust the ratio of PMOS beta over NMOS beta and achieve HI-skewed or LO-...
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0answers
23 views

Integrated circuit for the inverter

is there a chip(IC) that one can use to drive a full-bridge pure sine wave inverter circuit, with the features of controlling the output voltage(ability to manually control the voltage from i.e 207 ...
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0answers
74 views

Regulating voltage at end of 200 foot 120 V AC extension cable [migrated]

I am needing to drill some anchor bolts into concrete using an electric Hammer Drill (Electrical Rating 120VAC / 60Hz / 10A). I am working in a warehouse, and the worst case scenario, the furthest ...
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1answer
20 views

Power supply for dirvers in 3-phase motors - multiple transfromer windings

Looking into 3-phase motor drivers, especially ones for IGBT hex modules for motor drivers, I have noticed the use of transformer windings is arranged so that there is a separate winding for each of ...
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0answers
26 views

Using diodes to channel battery charging current

I have a setup with Solar PV, battery, inverter, and AC load. Between the battery and inverter I have connected a custom circuit with DC power/energy/charge measurement, and a relay. Problem is, ...
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2answers
50 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 ...
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2answers
51 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 ...
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1answer
47 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 ...
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1answer
72 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 ...
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1answer
51 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
44 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 ...
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2answers
153 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
36 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 ...
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1answer
82 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 ...
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1answer
45 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 ...
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1answer
117 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 ...
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1answer
56 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 ...
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1answer
45 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 ...
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1answer
88 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 ...
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1answer
36 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 ...
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1answer
54 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 ...
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1answer
41 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 ...
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0answers
73 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, ...
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1answer
21 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 ...
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2answers
89 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 ...
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2answers
64 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 ...
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1answer
35 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?
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3answers
61 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 ...
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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 ...
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1answer
76 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
77 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 ...
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1answer
53 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 ...
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2answers
77 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 ...
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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
113 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 ...
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2answers
59 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 ...
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2answers
67 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
95 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(...
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1answer
54 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 ...
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1answer
28 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
164 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 ...
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1answer
134 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
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1answer
88 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 ...