Sunforce 11240 1000 Watt Pure Sine Wave Inverter with Remote Control

Inverter is a very useful electronic device for converts dc to ac. Inverter function is equal with a generator. Just, inverter use a accumulator as a power source, but generator use a fossil fuels. Inverter is a portable device for carried everywhere such as picnic, camping, anyplace that far from a fossil fuels.
Sunforce 11240 1000 Watt is the most used inverter. Sunforce 11240 1000 Watt produces Pure Sine wave and be equipped with Remote Control.

This is the Product feature:

•     Connects to a 12 volt battery and converts DC to AC pure sine wave for power on the go
• Ideal for power failure emergencies and guarantees optimum compatibility with sensitive equipment, computers, motors, televisions and more
• 2000 Watts surge power, 1000 continuous power
• Safety features include: an overload alarm and LED light, a soft start system, low battery shut down, DC input overload voltage, output overload, overload temperature, short circuit shut down, and a high speed cooling fan
• System includes: two 110V household electrical outlets, a DC/AC power inverter remote control modular connector cable and key chain remote

                                                         $193.30

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1000W Inverter circuit and kit

This power inverter circuit will provide a very stable Output Voltage.Frequency of operation is determined by a pot and is normally set to 60 Hz. Various “off the shelf” transformers can be used. Or Custom wind your own for best results.

Additional MosFets can be paralleled for higher power. It is recommended to Have a “Fuse” in the Power Line and to always have a “Load connected”, while power is being applied. The Fuse should be rated at 32 volts and should be aproximately 10 Amps per 100 watts of output. The Power leads must be heavy enough wire to handle this High Current Draw! appropriate Heat Sinks Should be used on the RFP50N06 Fets. These Fets are rated at 50 Amps and 60 Volts. Other types of Mosfets can be substituted if you wish.

At 1000 Watts and operating from a 12 Volt Source, the Input Current will be close to 100 AMPS. That would Require a HUGH Size of a Primary Wire.

If you haven't much time to make your own 1000w inverter. I provides some 1000W Inverters Selections:

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250W PWM Inverter Circuit SG3524

A 250W PWM inverter circuit built around IC SG3524 is shown here. SG3524 is an integrated switching regulator circuit that has all essential circuitry required for making a switching regulator in single ended or push-pull mode. The built in circuitries inside the SG3524 include pulse width modulator, oscillator, voltage reference, error amplifier, overload protection circuit, output drivers etc. SG3524 forms the heart of this PWM inverter circuit which can correct its output voltage against the variations in the output load. In a non PWM inverter the change in output load directly affects the output voltage (when output load increases output voltage decreases and vice versa), but in a PWM inverter the output voltage remains constant over a range of output load.

Circuit diagram of 250W PWM inverter.

About the circuit.

Resistor R2 and capacitor C1 sets the frequency of the ICs internal oscillator. Preset R1 can be used for fine tuning of the oscillator frequency. Pin 14 and pin 11 are the emitter terminals of the internal driver transistor of the IC. The collector terminals of the driver transistors (pin 13 and 12) are tied together and connected to the +8V rail (output of the 7808). Two 50Hz pulse trains which are 180 degree out of phase are available at pin 14 and 15 of the IC. These are the signals which drive the subsequent transistor stages. When signal at pin 14 is high, transistor Q2 is switched on which in turn makes transistor Q4, Q5, Q6 ON are current flows from the +12V source (battery) connected at point a (marked with label a) through the upper half of the transformer (T1) primary and sinks to ground through the transistors Q4, Q5 and Q6. As a result a voltage is induced in the transformer secondary (due to electromagnetic induction) and this voltage contributes to the upper half cycle of the 220V output waveform. During this period pin 11 will be low and its succeeding stages will be inactive. When 11 of the IC pin goes high Q3 gets switched ON and as result Q7, Q8 and Q9 will be also switched ON. Current flows from the +12V source (marked with label a) through the lower half of the transformer primary and sinks to the ground through transistors Q7, Q8, Q9 and the resultant voltage induced at the T2 secondary contributes to the lower half cycle of the 220V output wave form.

The output voltage regulation section of the inverter circuit works as follows. The inverter output (output of T2) is tapped from point’s labelled b, c and supplied to the primary of the transformer T2. The transformer T2 steps down this high voltage , bridge D5 rectifies it and this voltage ( will be proportional to the inverter’s output voltage) is supplied to the pin1 (inverting input of the internal error amplifier of the IC) through R8, R9, R16 and this voltage is compared with the internal reference voltage. This error voltage will be proportional to the variation of the output voltage from the desired value and the IC adjusts the duty cycle of the drive signals ( at pin 14 and 12) in order to bring back the output voltage to the desired value. Preset R9 can be used for adjusting the inverters output voltage as it directly controls the amount of voltage fed back from the inverter output to the error amplifier section.

IC2 and its associated components produce an 8V supply from the 12V source for powering the IC and its related circuitries. Diodes D3 and D4 are freewheeling diodes which protect the driver stage transistors from voltage spikes which are produced when the transformer (T2) primaries are switched. R14 and R15 limit the base current of Q4 and Q7 respectively. R12 and R13 are pulldown resistors for Q4 and Q7 which prevents their accidental switch ON. C10 and C11 are meant for bypassing noise from the inverter output. C8 is a filter capacitor for the voltage regulator IC 7808. R11 limits limits the current through the indicator LED D2.

Notes.

• Mount the SG3524 on a holder.
• All capacitors other than C10 and C11 must be rated at least 15V.
• Preset R9 can be used for adjusting the inverter’s output voltage.
• Preset R1 can be used for adjusting the inverter’s operating frequency.
• Transistors in the driver stage require heatsink.
• T2 is a 220V primary, 12V secondary, 1A transformer.
• T1 is a 12-0-12 V primary, 220V secondary, 300VA transformer.
• Driver transistors must be isolated from the heatsink using mica sheets. Mounting kits for these transistors are easily available in the market.
• An optional finned aluminium heatsink can be attached to the 7808.
• If 1A bridge is not available, make one using four 1N4007 diodes.

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Low Cost 100W Inverter

Here is a 100 Watt inverter circuit using minimum number of components.I think it is quite difficult to make a decent one like this with further less components.Here we use CD 4047 IC from Texas Instruments for generating the 100 Hz  pulses  and four 2N3055 transistors for driving the load.
The IC1 Cd4047 wired as an astable multivibrator produces two 180 degree out of phase 100 Hz pulse trains.These pulse trains are  preamplifed by the two TIP122 transistors.The out puts of the TIP 122 transistors are amplified by four 2N 3055 transistors (two transistors for each half cycle) to drive the inverter transformer.The 220V AC will be available at the secondary of the transformer.Nothing complex just the elementary inverter principle and the circuit works great for small loads like a few bulbs or fans.If you need just a low cost inverter in the region of 100 W,then this is the best.

Notes.

• A 12 V car battery can be used as the 12V source.

• Use the POT R1 to set the output frequency to50Hz.

• For the transformer get a 9-0-9 V , 10A step down transformer.But here the 9-0-9 V winding will be the primary and 220V winding will be the secondary.

• If you could not get a 10A rated transformer , don’t worry a 5A one will be just enough. But the allowed out put power will be reduced to 60W.

• Use a 10 A fuse in series with the battery as shown in circuit.

• Mount the IC on an IC holder (socket).

• Remember,this circuit is nothing when compared to advanced PWM inverters.This is a low cost circuit meant for low scale applications.

The maximum allowed output power of an inverter depends on two factors.The maximum current rating of the transformer primary and the current rating of the driving transistors.
For example ,to get a 100 Watt output using 12 V car battery the primary current will be ~8A ,(100/12) because P=VxI.So the primary of transformer must be rated above 8A.
Also here ,each final driver transistors must be rated above 4A. Here two will be conducting parallel in each half cycle, so I=8/2 = 4A .
These are only rough calculations and enough for this circuit.

Source: circuitstoday.com

See also about inverter
1. How to make a simple inverter
2. Inverter 100W with IC 4047

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Inverter Energy Source

In essence, there’s a couple different types of electric powered energy inside Globe: DC (Strength) in addition to switching AC current (AC). DC actions continuously from the advantageous power write-up on the negative electric submit. Changing electric energy operates forwards and backwards concerning the some articles. Electricity current occur in Character and as well battery pack packages, though Heating and air conditioning pre-existing might be man-made plus items electrical energy above the average person energy electric company which usually makes it possible for person company in conjunction with features. Vehicle battery packs found a problem before once we acknowledged many people wished to functions usually AC-powered products within their autos however often definitely not do this due to incompatible newest technical specs. Manufacturers like Vector altered to the site resolve this kind of difficulty by means of gelling having fashion motor vehicle energy inverters that could appropriately and as well properly adjust Digital camera that you should AC. Their own worthwhile design and style presents resulted in quite a few stream-lined, square items that talk with battery power bags in addition to effect the coming switching ac current properly through several regular strength links.

A few aspects work out how a great energy inverter operates: inflow effect plus electrical energy result. State consequence makes clear the way you look concerning utility indications as they definitely commence on top of a wonderful oscilloscope. Square seashore appears to be the same as his or her headline details: for example pieces over the electric company. Normal sine marine, generally known as right sine sand hills, appear mainly because viewed search on-screen. Sine claim car durability inverters become more successful when compared with square trend power inverters whenever continual energy flow is usually an important issue. Really, true sine productiveness can be quite a minor superior to that regarding local community electrical power energy strength power grid, for that reason, luckily they are the more expensive products using say hello to the industry.

Newest advancements through know-how get stuck individuals within a strict budget getting an the variety of each fashion commonly known as whether or not modified square and also transformed sine claim energy inverter. Your current particular diversities which will find out how an authentic sine vehicle energy inverter capabilities and ways in which a good changed SINE energy inverter functions are extremely minute make almost any evident outcomes utilizing usual electronic products. Only the many high-end goods necessitates appropriate sine consequence, combined with cost of they may generate a event for just about any extra buying of true sine architectural to supply very best excellent in addition to trustworthy operation.

Yet another brand-new development that enables car electricity inverters to use a lot more stableness than ever would be the superior Delicate Begin Technological know-how, manufacturer “SST” just by corporations one example is Vector. SST transpires inside progression of techniques energy inverters perform. The first energy inverters with regards to cars may just accomplish often throughout awesome core commences. Simply because couldn’t get sufficient electrical energy inside battery, they could turn off from pre-existing under load as well as have to have a manual reboot your computer. SST gets rid of that issue by just continuously expanding recent raise during generator new venture corporation. Once the end result declines for any excuse, SST would make quick changes in compensation and definitely will minimize numerous shutdowns. As soon as in the extraordinary functionality just about any banned can easily occur, your modern day automobile electric power inverters execute repeatedly so that you can system themselves devoid of frustrating the trucker from the motorway.

Reddish colored Huge batch Existing delivers only the best possible and the majority of reliable energy inverters that may work with any situation desiring DC-AC change for better. Discover just how electricity inverters are employed our personal Suggests location, and look some of our on the internet record to locate the virtually all high-end and as well dedicated tools through each of our clear-cut, hassle-free on-line obtain process.

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Look also How to Make a Simple Inverter and Inverter 100W with IC 4047 

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Inverter 100W with IC 4047

This is a schematic inverter 100W, to produce 100W of power we use 12V10A car battery. R1 is a potentiometer that is used to set the output frequency to be at 50-60 Hz, which the inverter will be used for our home electronics. If only to try, you can use the step-down transformer CT in reverse, the input at 9V-0-9V and the output at 220V. Transformer 10A that we must use in order to produce 100W of power. This Circuit is built with a 4047 to generate pulse, two of 2N3055 and a transformer  to increase power. You can replace the transistor with other transistor if have a same spec.

list of components:
IC 1        4047
R1          250K Potensiometer
C1          0.022uF/25V
R2,R3    10 ohm, 5 watt resistor
C2,C3    68 uF/25V Tantalum Capacitor
Q1,Q2    2N3055 NPN Transistor
TR1        see text

This inverter can be designed to produce greater power in a way by substituting transistors and transformers (power stage) are more powerful components.
Note: use a heat sink to each transistor for a good performance 

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How to Make a Simple Inverter

The inverter is an electronic circuit that converts DC voltage into AC voltage. The circuit is very useful when the power goes out or the time when we do not have an AC voltage source. Inverter only requires an accumulator to operate. So the advantages of this circuit (inverter) compared with an AC voltage generator that uses fuel to work is the inverter does not cause noise when being operated, does not cause air pollution and easier to carry anywhere.

So, how to make a simple inverter?

1. We must learn the parts of an inverter. The parts of an inverter include: driver stage and power stage. You can see in the image below. 2.   Construct each of the parts of an inverter.

•     Driver stage

Driver stage consists of pulse generator and pulse frequency regulator. We can construct a pulse generator with the IC 555 or other IC  that can generate pulses (one of the IC op-amp and IC TTL).

In the pulse generator, set the pulse frequency at 50 to 60 Hz by varying the component or add a potentiometer.

•      Power stage

Power amplifier stage consists of current amplifier and step-up voltage. We can construct a current amplifier using a pair of transistors (Darlington transistor) with a reinforcement of the most good. In selecting transistors are used, we must choose a transistor that can work on the current that we use: for example we use a 10A current, we can use a 2N3055 transistor that can operate at currents up to 15A.

In the step up the voltage, if we want to construct a simple inverter, we can use the center-tap transformer with backwards mode to produce the 220 V output. If we want to construct a inverter with power 220 VA then we should know: Pinput = Poutput, where P = V x I, so the output voltage of the inverter circuit is 220 volts and have a current of 1 Ampere.

                                                        Pinput = Poutput

                                                    V in x I in = V out x I out

                                        12 V x   18,3 A  = 220V x 1 Amp

                                                     220 W   = 220 W

From the above calculation, we need the accumulator 12 V and have a current of about 18 A, we also need a transformer 20A to produce 220VA.

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