SAR Series Fully Automatic A.C.Voltage Regulator

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Loading Port:: Shanghai

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Supply Capability:: 10000pcs pc/month

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1.Application
These special products of SAR series Voltage Regulator have advanced equipment, abundant technology, reliable quality and distinguished credit. SAR series are designed at JS3717-84 request, these products conform to fully automatic control of integrated circuit. They are of quick speed, good reliable of sensitive action, convenient use and assure the stale resuit. They are suitable for families, schools, enterprises, hotels and diets etc., where need a stable civil power. They can make the illumination lamp, TV set, air-conditioner, refrigerator, computer SAR-2000VA and copy machine etc. work at a normal condition and have a long using time.

2. Technical specification

Frequency	Regulating Time	Temperature Rise	Withstand Voltage	Low Voltage Protection	Over Voltage Protection
50-60Hz	Less Than 0.5	<60^oC	Accord With Ministry Issued Standard	Output 100V/160V	Output 270V/260V
Model	Range	Input Civil Power Voltage(V)	Output Precision of Stabling Voltage
	Current	160-260	220V±5%
0.5KVA To 5KVA	Over-Low Voltage	130-270	220V±8%
	Special Over-Low Voltage	100-270	220V±10%
	High Precision of Stabling Voltage	160-270	220V±3%

Q:I was planing on buying transformers but my friend told me about skyrim and it looks pretty good, which one is better and funner?: Transformers : Dark of the Moon is wwaaayyyyy better than both. .well actually if you like medieval times games.then sure maybe skyrim is the game for you. try watching walkthroughs of the gameplay on youtube.I don't know you or what you like but however by watching the gamethroughs you'll know which one you prefer :p btw Transformers Dark of the Moon is 50 dollars I think now. since Skyrim is new it's like 60 dollars.and War for cybertron is older.so if you go to a video game store that isn't as well known.you know those stores that sell em cheaper.you can get it very cheap.or look on Craigslists. I got War for cybertron for 15 dollars. I got Transformers Dark of the Moon for 60 dollars ( knew I wanted it cause I watched it on youtube! ) and in my opinion.dark of the moon is waaayyy more fun. sorry if I talked too much.hope I helped

Q:if the transformer in a wall charger steps down the voltage from my wall to 120V does this mean i could use it in the reverse direction as a step up transformer? I want to combine 4 car batteries making 48V and plenty of amperage, but what can i use to get it up to 120V for my 1/2 hp motor?: Not you can't really because transformers need AC (alternating current) to work. So your charger has got a rectifier in it and possibly some kind of a regulator circuit. You could use 10 car or motor bike batteries in series to get 120 VDC but PLEASE BE CAREFUL. You could get a nasty shock at 120 volts.

Q:I'm getting a transformers game and idk which one to get. Should I get Transfermors: WFC (War for cybertron) or Transfermors Dark of the moon? Which one is better?: Out of all the transformers.WAR of CYB was the best!! Because it had no restriction to the movie But I think you should get The New one!! Looks Awesome though but will be expensive.

Q:I am learning about transformers and one of the items to calculate is the impedance. I need to calculate regular 60 Hz Core and Coil Shell Type Transformers Al wire in secundary, Cu Wire primary and use Epoxy paper for insulation.: It's pretty difficult to calculate the impedances (there's more than one) entirely from the transformer's design data. It's easier and more usual to decide on an equivalent circuit (there are plenty available depending on how well you want to model the transformer) and then to determine the parameters by a mix of calculation and measurement. A pretty basic equivalent circuit which refers all impedances to the primary side, has the primary terminals connected first by Xm and Rc in parallel (the magnetising reactance and core loss resistance) and then by a third parallel branch containg a series connection of leakage reactance Xl, winding resistance Rw and an ideal transformer of turns ratio Np/Ns. Xm is best obtained from an open circuit test but could be calculated as the inductance of the primary winding. For the latter you'd need to know core dimensions, number of winding turns and the magnetising characteristic of the core iron. If you have conductor sizes and conductivities you can calculate the winding resistance Rw, referring the secondary part to the primary by multiplying it by (Np/Ns)?. You can deduce Rc from the losses measured on open circuit at nominal voltage and Rw from dc resistance measurements on the windings. If you know the specific hysteresis and eddy current losses of the core material, you can also have a good stab at calculating Rc. The leakage reactance is quite difficult to calculate from first principles - even designers usually resort to some empirical factors. Basically it's determined from the short circiut test which is at nominal secondary current. The ratio of primary volts to secondary surrent (referred of course) on secondary short circuit will get you close to Xl - you can adjust for Rw which can be determined from the losses on short circuit (core losses are absent here!) or by the two methods indicated above. It's normally Xl that's referred to as the transformer reactance and together with Rc and Rw, the impedance.

Q:I have a transformer of 12060 Volts and a transformer of 15000 Volts, both neon-sign types; if I wired them together, would it amplify the output voltage or have a catastrophic effect that would end the world as we know it?But really, can I wire them together for an added effect of some kind?Thanks.: Yes the PS and PS 2 are likely problems. The switching type are likely rare for this high a voltage. Use the transformer with the broadest surface as the base and mount the other at least two inches 5 centimeters above it with very high voltage electrical insulators. This MAY reduce the problems with leakage to the case and excessive stress on the internal insulation. Connect the primaries in parallel; the secondaries in series and you MAY get 27000 volts, perhaps MORE. Be prepared to cut the power quickly if either transformer makes arcing sounds or smokes. Be careful, these transformers often give DEADLY shocks. My advice is sell them cheap on E BAY before they put you in an early grave. Neil

Q:I need a transformer that can produce 10 volts from a 1/2 volt change in the primary winding, but don't know how they are classified. The transformers I've seen on the internet give no clue of the winding ratio, just a serial number. Thanks.: I have never ordered a replacement transformer but you are looking to step the primary up 20 times and that is doable. I built a 1 Kilowatt amplifier for my ham radio station and my transformer steps the line voltage (either 120 or 240 volts) up to 3400 volts @ 500 mills. I also have a separate winding which steps the voltage down to about 9.6 volts for the tube filament. Aside from finding the correct step up ratio you also need to make sure the transformer can handle the power you will be dissipating. My transformer weighs about 25 pounds to allow the amp to put out about 1 KW. Wish I could've helped u more but I built the thing 15 years ago and have not fired up the amp in about 5 years.

Q:Power transformer parameters: First, the transformer technical parameters The main technical parameters of the power transformer are: rated power, rated voltage and voltage ratio, rated frequency, operating temperature class, temperature rise, voltage adjustment Rate, insulation performance and moisture resistance, the main technical parameters for the general low-frequency transformer parameters are: transformer ratio, frequency characteristics, nonlinear distortion, magnetic shielding and electrostatic shielding, efficiency and so on. A. Voltage ratio: Transformer two sets of coil turns are N1 and N2, N1 for the primary, N2 for the secondary. In the primary coil plus an AC voltage, the secondary coil will produce both ends of the induced electromotive force. When N2> N1, its induction The electromotive force is higher than the primary voltage. This transformer is called a step-up transformer: when N2 <N1, its induced electromotive force is lower than the primary voltage, which is called a descending transformer. Primary secondary voltage and coil The number of the following relationship: where n is called the voltage ratio (turns ratio). When n <1, then N1> N2, V1> V2, the transformer is a step-down transformer.

Q:A speaker with resistance R is rated at 16Ω. What ratio of NP:NSof the transformer is required so that the stereo thinks that the speaker is 8: The impedance ratio is the square of the turns ratio, so to transform a load resistance of 16Ω to one of 8Ω you need a turns ratio of NP/NS sqrt(8/16) 0.707:1 This relationship arises as follows - In the ideal case, the flux in the transformer core can be taken to be the same in the primary and the secondary, so by Faraday's law of electromagnetic induction VP/NP VS/NS where VP and VS are primary and secondary induced voltages. For conservation of energy, the power in the secondary circuit must be the same as the power in the primary circuit (assuming no losses in the ideal case) , so (VP^2)/RP (VS^2)/RS, leading to - VP^2/VS^2 (NP/NS)^2 RP/RS Note that stereo systems are incapable of thought, so the question, as asked, is meaningless, or at best fanciful; the appropriate language to use is 'what transformer ratio is required to present a resistance of 8Ω at the primary terminals when a resistance of 16Ω is connected to the secondary ?'. This draws attention to the fact that the transformer/load combination will behave in the same way whatever it is connected to - the 'thoughts' of the stereo are irrelevant .

Q:I own a 1973 house and want to do a little remodeling. It has a 25foot hallway with 3 (old fashioned) ceiling lights that I want to replace with recessed lights. I went into the attic to look over things - looks like each e-box is made of bakelite which makes sense due to its age, attached to a rafter. However, there appears to be a transformer with what looks like low voltage wires -redwhite- on top of the box.Can a qualified electrician please tell me what this is and do I need to worry about it when I retrofit to recessed cans?: That is probably the transformer to your door bell.

Q:Could someone please explain, in relatively simple words, how an electrical transformer works?: In simple words, what a transformer does is reduce the voltage on an alternating current. An alternating current is the one that has sin wave for. In other words, the voltage in one moment is positive and in the next moment it's negative. This is what makes posible for a transformer to work. A transformer consists of two coils that are put one next to the other. For example, you can get a coil by turning a wire around a screwdriver. One of the coils has less turns of the wire than the other. It is said that when you pass current through a coil, you will get a magnetic field. This magnetic field will depend on the number of turns the wire has on the coil. It works on the other way too, if you induce a magnetic field on a coil, it will generate a current. Why does this work?. Well, you can imagine a copper wire as a collection of little magnets surrounded by electrons. Well, when you pass the wire through a magnetic field, all the magnets will head to the same direction and this will make the electrons move with them. This is the principle a transformer uses. You induce an AC current through one of the coil and this creates a magnetic field. This magnetic field passes through the other coil making the electrons move and since the second coil has less turns than the first one, you get a smaller voltage. Why can't you use a transformer on DC? Because when all the little magnets move in one direction with DC, they stay that way and you won't get a current, you need to keep them moving so it works. Hope this helps.

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