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

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0answers
17 views

Switching cold cathode fluorescent lights on and off without relay?

I have a few sets of 2-in-1 CCFLs that are designed to be powered off the 12V rail of a computer PSU. I'm planning to build a large 7-seg display using them so I'd like to be able to switch them on ...
1
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1answer
56 views

Aluminum winding in inverters

I am planning to buy inverter. I finalized one model; however, I was told that it uses aluminum windings whereas the other model has copper windings. They recomended I should buy the one with copper ...
0
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0answers
27 views

220v Grid Tie Inverter [migrated]

I just bought a 3000w 220v grid tie inverter and I'm wondering if it is safe to simply plug it into the 220v port in my laundry room (the one my dryer runs on) and then run it, or is there more I need ...
21
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6answers
3k views

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 ...
4
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1answer
174 views

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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0answers
35 views

Testing FPGA-based SPWM

Sinusoidal Pulse Width Modulation (SPWM) was written using verilog in FPGA and it was simulated in ModelSim. The next task is to test it in actual hardware setup. The pulse of FPGA is 3.3V and we ...
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1answer
32 views

24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device,

I am having four 24V 250W solar Panels can I use them with my existing 12V Battery and Inverter with the help of a (24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device 30A) instead ...
0
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1answer
52 views

Will a Transformer work from a DC inverter's output? [closed]

If so, is it ever more efficient to use an inverter into a transformer to dial down DC Voltage?
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2answers
59 views

12V 120V inverter and battery for off grid oxygen

I have an oxygen concentrator that is 120V. The data plate says 3.0 amps and the specs say 280 watts. My question is this. I want to use it in an RV off the grid but without running my generator all ...
0
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1answer
62 views

Pseudo-Nmos inverter in LTSPICE

In LTSPICE, I've built a pseudo-NMOS inverter and I've got 2 tasks to do using it. 1) I've a initial guess for Wn value of NMOS. I start the simulation with this value however, I need to optimize it ...
2
votes
3answers
60 views

Switch poles from inverted power to make negative positive?

My understanding is that voltage is relative (where you measure affects voltage) and that current flows with voltage difference. Why can't you just switch the poles/wires of an inverted signal/power ...
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2answers
70 views

how can i drive a motor with an inverter providing it's power supply? [duplicate]

I'm trying to drive a gyroscope that needs a 3 phase 400Hz 32v 0.7A power supply. i'm going to use an inverter to provide my supply(1phase to 3phase AC: LS-IG5A-0.75kw). i have 2question about it: ...
0
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1answer
32 views

Need to know battery configuration for a 250 watts inverter [closed]

I have a 12 Volt inverter which have ability to produce 250 W output. I would like to purchase a battery for this. can any one tell me the configuration of battery ? eg: Minimum AH
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votes
1answer
108 views

Making a three phase voltage source to drive a gyroscope

I'm trying to drive a gyroscope that needs a 3 phase 400Hz 32v 1A power supply. How can I provide that supply? It's one part of my university project and I'm a beginner in this field. I'd like to find ...
4
votes
2answers
161 views

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 ...
1
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1answer
120 views

LC Low Pass Output Filters on Inverters

I've seen various schematics which feature a low-pass LC filter at the output of a inverter intended for a UPS or a Class D Amplifier. With a Class D Amplifier the load is somewhat predictable (i.e. ...
0
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1answer
67 views

3-phase Inverter in single phase operation

I'm working on a standard (AFAIK) 3-phase, 6-pulse inverter. I'm testing it under single-phase conditions to see what the de-rating will be. My understanding: With everything else staying the ...
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1answer
61 views

Can we say that the circuit is a circuit of Nand element

Can we say that this circuit is nand element ?
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1answer
251 views

50/60Hz inverter output inductor design

Given a SMPS PWM inverter (for example an UPS) supplying voltage/current at 50/60Hz, how do you design an output inductor? I don't mean how you compute its value in uH/mH nor its current rating in A. ...
1
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1answer
65 views

Sony Vaio Inverter [closed]

My sony vaio vpcee3j1e laptop backlight doesn't work.Because the inverter is not working anymore. Since I have some urgent code to write, I need to fix it.I do not have any tools to make measures so i ...
0
votes
2answers
143 views

Why my single-phase induction motor's velocity decreases after 100Hz?

I have made a single-phase inverter with control V/F using Freescale S08P and IRAMS. However when the frequency of 100hz passes the motor decreases the velocity. Some problem with my system or V/F is ...
0
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0answers
66 views

Solderless MOSFET bridge connection. I can't find breakout connector for MOSFETs

I need a way to separately bridge 2 rows of 6 MOSFETS together for high current application. I'm building a power inverter and the board I'm using at the moment isn't rated for this high of current. ...
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1answer
82 views

Single Phase Sine Inverter

Can somebody tell my why that gain and integrator (and negative feedback gain) circuit is used to measure the current? This is the basic H bridge circuit, mosfet is used as switch here, and gate ...
0
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0answers
138 views

Single phase pure sine wave inverter Proteus Model error

I am designing pure sine wave inverter in Proteus. I am getting error as no model is specified for comparator OpAmps LM139/LM239/LM339/LM2901/LM3302 None of the above mentioned comparator are ...
1
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1answer
84 views

CMOS inverter : Calculation of Vd

simulate this circuit – Schematic created using CircuitLab Consider the CMOS circuit shown, where the gate voltage Vg of the N-MOSFET is increased from zero while the gate voltage of ...
6
votes
2answers
218 views

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 ...
2
votes
1answer
205 views

Oscillator for High Voltage Transformer: RLC or Blocking Oscillator

What type of oscillator is being used in the schematic? How is that particular oscillator working in this circuit? I'm less than confident with oscillator theory, and I can't tell if this is RLC or ...
0
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4answers
125 views

In CMOS, can I assume the delay of a multiplexer is negligible compared to the delay of an inverter?

Let say I have a ring oscillator, and I modify the ring so that the output of an inverter is connected to an input of a 2-to-1 MUX, and the output of the MUX is connected to the input of the next ...
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2answers
61 views

Inverting shift register [closed]

I am trying to invert the output of a shift register using an open-collector TTL inverter with 33K pull-up resistors. The inverter works fine when input=HIGH, but when the input is LOW, the output is ...
0
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1answer
71 views

How to measure the delay of one single inverter in ASIC?

In practice, is it feasible for a chip manufacture to reliably and accurately measure the delay of one single inverter in ASIC? If it is, how can one go about doing it?
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3answers
163 views

Why does there have to be a load in MOS inverters?

I have been studying about inverters for a while. In the book that I was reading, inverters have been explained according to the type of load connected to the drain of the driving transistors ie. ...
1
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3answers
153 views

How does this MOSFET circuit work?

The following circuit from a textbook models an inverter implemented by a MOSFET switch. I understand how in the first case Vout is zero, but in the second case(the switch is open), the textbook ...
2
votes
1answer
226 views

Would shooting laser or UV light at an inverter make it permanently slower?

I'm studying the topic of cloning electronic circuits for my research. And I have a scenario as the following: Chip A has two ring oscillators (RO1a and RO2a). And RO1a is faster than RO2a. Chip B ...
2
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4answers
270 views

500W Inverter + Laser Printer

I have a laser printer that I've been wanting to use on the go in the car with an inverter. The power consumption section in the printers manual: ...
2
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1answer
493 views

CMOS Inverter Equal Rise and Fall Times

I am currently attempting to design an inverter in Microwind layout software that has equal rise and fall times. Rise time is defined as the time for the circuit's output to go from 10 percent to 90 ...
2
votes
2answers
368 views

Charging a small 100uF 450V capacitor with a small battery?

How can I easily charge a 450V capacitor with a small battery such as a 1.5V or 9V while stepping the voltage up in between so as to provide a voltage near 450V for the capacitor? I'm looking to ...
1
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1answer
84 views

Can I get a square-wave inverter as source for my laptop charger? [closed]

I have a solar power which it's power is stored in 12V automobile battery. And use inverter to produce 220V AC to feed common equipments. The inverter as shows symbolic gets a square wave. It ...
0
votes
1answer
106 views

difference between optocoupler and buffer

I am making a inverter (DC to 3 phase 2 level inverter) using IRF640 mosfets. I get my triggering pulses form a dspace kit (with matlab). I want to make drive circuit for my mosfets. I have seen a ...
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0answers
113 views

Testing an Inverter

I have a Samsung T240 LCD and while using it, a strong smell of a burnt component/wire/plastic is present. I disassembled the device and I've noticed that the smell comes from an inverter that's in ...
3
votes
1answer
670 views

Measure the leakage current of a CMOS inverter

I would like to measure the leakage current of a CMOS inverter. As this current depends on the input, I decided to measure something average, namely, the leakage current of a ring with two CMOS ...
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votes
1answer
149 views

How do i calculate the timing of an oscillator

i am designing a modified square wave inverter. i am using SG3524 as my pulse width modulator. i desired to have 25% duty cycle... i know my period T is the inverse of my frequency which is 50Hz so my ...
4
votes
2answers
144 views

Uses of inverters in this circuit?

In this article, http://www.edn.com/design/test-and-measurement/4391393/Single-hex-inverter-IC-makes-four-test-gadgets, A circuit is used to detect a user degined low logic level and high logic ...
1
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0answers
59 views

Power El wire from Mains

I have been looking at EL wire inverter, and most are battery powered. I want to power it from mains power. I was looking at having a transformer to step down from 220AC to 110AC. This gives me 110AC ...
2
votes
0answers
123 views

Suggestions for use of 320V 100W solar panel? [closed]

I have recently acquired a 100Watt 320VDC (429VOC) flexible solar panel which I would like to use on my boat. I may buy more of these panels if I can find an affordable way to use them. The cost of ...
1
vote
2answers
209 views

1kHz AC from mains power

I've got a plan for a large electroluminescent display. EL panels are typically driven with a sine wave at around 1kHz, and I want to use mains power for this. What's the best way to convert mains ...
1
vote
1answer
411 views

PWM switching in a 3-level inverter

I am new to the pwm switching technique. Here I have the output waveform of a 3 level inverter with normal switching and switching using pwm pulses. (a)Phase-A, ...
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2answers
191 views

74LS04 (5 V) outputs 1.2 V to input pins

I have tree 74LS04 inverters and I cannot make them work. When I connect device to power and ground and measure input voltage pin using multimeter, it read 1.2 V, which I expected to be 0. The device ...
2
votes
1answer
80 views

Where are the losses in an inverter-type portable generator?

I have an inverter-type portable gasoline generator that is rated at 3kW / 3.3kW surge. In the service manual, the engine's power output is said to be 4kW. (The engine's displacement is 269cc). I am ...
1
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2answers
207 views

Trouble using marine batteries with UPS

First, let me premise this question with the fact that I'm not well versed in electricity. Here's the problem: I am trying to power a UPS with an inverter and two deep-cycle batteries run in ...
0
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3answers
3k views

Does converting 12V DC to 110V AC really increase the available watts?

When designing solar panel systems for homes how do you convert the watts generated by the 12V DC solar panels to watts available in a 110/120V AC system? When I do the math it seems to defy logic. ...