Q:i have one transformer, but i don't know what wattage does he haveso can someone help me with that

If the transformer has both the voltage and the current or amps listed on it just multiply the two to get wattage. A 110 volt transformer at 5 amps will be 550 watts. If the transformer doesn't list both of these specs, try looking up the brand and part number to see if you can find them. That would be the only way. A bigger transformer will generally have a higher wattage rating but you won't know exactly what the rating is.

Q:I have been reading about pulse transformers and i am curious if there exists a pulse transformer that would take 1 pulse/second or even less and convert to very low voltage high current. If not, would it be possible to make one? Any info is very appreciated! Thx!

Pulse transformers can be wound to any turns ratio that is desired. That being said pulse transformers have small cores and therefore handle small amounts of power. You can find cores on those old mother boards that are no longer in service and junk computer power supplies also have a couple of cores. These toroids were normally used as filter inductors to remove spikes from DC or low frequency lines. You can easily rewind them for pulse transformers.

Q:chemical transformer.

to transform WHAT into WHAT?

Q:how transformer came to know that it has to draw lagging current during summers

A transformer on open circuit is just an inductance and that will draw a small lagging (magnetising) current in that operation mode. On load, the phase of the current drawn will depend on the load. If the load is capacitive then the transformer may well draw a net capacitive current. The small inductive contribution due to the magnetising current will still be there but may be subordinate to the load. The season is of no significance.

Q:Power transformer parameters

B. Transformer efficiency: In the rated power, the transformer output power and input power ratio, called the efficiency of the transformer, that η = (P2 ÷ P1) x100% where η is the efficiency of the transformer; P1 is the input power, P2 is the output power. When the transformer output power P2 is equal to the input power P1, the efficiency η is equal to 100%, the transformer will not produce any loss, but in fact this transformer is not the transformer transmission power always produce loss, this loss is mainly copper Loss and iron loss. Copper loss is the loss caused by the transformer coil resistance.When the current through the coil resistance heat, part of the energy into heat and loss.As the coil is generally wrapped with insulated copper wire, so called copper loss. The iron loss of the transformer includes two aspects: First, the hysteresis loss, when the AC current through the transformer, through the transformer silicon steel wire magnetic field its direction and size changes, making the silicon steel sheet internal friction, release heat, Part of the energy, which is the hysteresis loss. The other is the eddy current loss, when the transformer work, the magnetic core lines through the line, and the magnetic lines perpendicular to the plane will produce induced current, because the current self-closed loop Circulation, and into a spiral, so called vortex. The presence of eddy current heat, energy consumption, this loss is called eddy current loss. Transformer efficiency and transformer power levels are closely related, usually the greater the power, loss and output power is smaller, the higher the efficiency, otherwise, the smaller the power, the lower the efficiency.

Q:Transformers have any way of cooling

Transformers commonly used cooling methods are the following: ??1, oil immersion (ONAN); ??2, oil-immersed air-cooled (ONAF); ??3, forced oil circulation air cooling (OFAF); ??4, forced oil circulating water cooling (OFWF); ??5, forced to guide the oil circulation air cooling (ODAF); ??6, forced to guide the oil circulating water-cooled ODWF).

Q:Single bus sub-section for power distribution, transformer with a prepared and dual-use how to understand

One with one: single bus segment switch closed, only one transformer power supply, another standby. Dual use: single bus section switch off, two transformers were powered. Added: Single bus segment wiring form, it is a single bus with sub-section breaker into several sections. Increased reliability and flexibility compared to single-bus non-segmentation. Advantages: 1, two bus segments can be split operation, can also run side by side; 2, important users can be connected to a different dual-circuit busbars, to ensure uninterrupted power supply; 3, any bus or disconnector overhaul, only stop the paragraph, the remaining sections can continue to power, reducing the power outage range.

Q:I need a (step-down) Transformer of the following specifications:240VAC to 24VAC 10A or 240VAC to 24VDC.(Output as 24VDC would be better/easier).I live in Victoria, Australia and need one ASAP (next 3 days or sooner)Plz tell me any store or so Also, if u wanna know the VA Rating, its 240VA.If 10A is not available then anything closest to it. say 9 or 8.5 or 8 or 6.5.Cheers!

Transformers only work with AC, so the second choice is not possible. But you can buy power supplies that have a DC output. Reference has one possibility. Search google for buy supply 24v 10a and you will find lots more. .

Q:Does anyone have any knowledge or experience with what happens if you try to run two different power supply transformers from the same AC line input. Can you do that? I have one transformer with a primary DC resistance of 28 ohms. I have a second transformer with a primary DC resistance of 265 ohms. I want to run these two transformers from the same AC power cord input. I tried connecting their primaries in series across the AC cord input, and the resulting secondary outputs from both transformers were lower than expected for a no-load condition. I am a little concerned about trying to connect the two transformer primaries in parallel.Any ideas?

you can connect as many in parallel as you want, if they are all rated at 120 volts AC input. After all, all of the appliances, lights, etc in your house are all connected in parallel, and many of these have transformers. That is what parallel connection is. They all get the same voltage, and they are all independent of each other. .

Q:If calculating the efficiency of a transformer with different frequencies,how can the frequency be altered? For the experiment the voltage applied will have to be constant, is this still possible? or what quantities will be kept constant? and which will be measured to calculate the efficiency? using PVI to then use %(Pout/Pin)*100 would mean measuring current and voltage, is this the best way?

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