No. By "energy", you must mean "power"?
Energy = power * time.
Anyway,
No transformer can step up energy. Even in a perfect transformer, you would only receive the energy output equal to the energy input.
There is always some loss of energy due to resistance of the windings and unwanted electrical currents induced in the core. Both convert some of the energy input into heat.
Only current & voltage magnitude will change from primary to secondary (and vice versa). So the power (P = voltage * current) remains constant at both the sides.
No, the voltage will increase when a step up transformer is used.
All Transformers consume electricity in the form of excitation current. This is a very small current that keeps the electrical produced magnetic flux continuous.
voltage
This could be dangerous if you aren't very careful. Take the transformer out of the welding machine. Put it on a wooden bench. Apply 12 volts to the input side with a car battery. Measure the input volts with a volt meter and write down the value. Then use your volt meter to measure the output voltage. If you have no output voltage then your transformer is obviously blown. You should read an output voltage that is higher than the input voltage based on the number of winding in the coil and/or the manufacturers specifications. According to Faraday's law the only output voltage you will read is at the exact time power is applied to or taken away from the input when using dc power. Otherwise you will have to apply ac power which is much more powerful ( and more dangerous ) than the 12v dc. Your volt meter may not be designed to read high enough voltage for the output you would see with 110 v ac.
An inverter has a high output when the input is low, and a low output when the input is high.
No. In an amplifier, Power Out > Power in. In a transformer Power Out ~= Power In (minus internal losses). An AC generator is more like an amplifier than a transformer.
Output of the power amplifier is smaller 0.1 ohms and input of the loudspeaker is more than 4 ohms.
A diode itself has no input or output.The circuit containing the diode usually has an input and an output, maybe even more than one of each. The output of this circuit will depend on far more than the diode as well as depending on the type of diode used.Theoretically: if a diode is connected across the secondary output of a stimulated transformer, you would read a half wave at the frequency of the source across diode.Such a circuit would cause any real diode to explode due to lack of any current limiting and the resulting high power dissipation in the diode.Hence "Theoretical". That's kind of what "Theoretical" means.
Output power can never be more than input power. With a transformer, it is possible to increase the output current (while decreasing the output voltage), or to decrease the output current (while increasing the output voltage).
Assuming you mean a step-up transformer, no. An ideal transformer will always have the same input power and output power. A real transformer will actually have losses, so the power output will generally be somewhat less than the power input. To increase the power output of an amplifier, you need to actually decrease the load impedance for the same given frequency. What this means is that you will draw more power with a speaker having 6-ohms impedance (at say, 1kHz) than a speaker having 8-ohms impedance (also at 1kHz; the frequency doesn't matter but needs to be the same reference to compare apples-to-apples).
A: Absolutely a power transfer will have an internal loss of IR . for a power transformer the loss can be as much of 20% or more if other magnetics are involved like iron screw holding the lamination together. Usually brass is used to reduce that loss.
No, they don't violate ANY conservation law. And specifically, they don't violate conservation of energy.Roughly speaking, the power (energy per second) in a current is equal to voltage times current. (There is also a power factor, which I won't treat in more detail here.) In a perfect transformer, the output voltage might double (compared to the input); while the output current is reduced to 1/2 the input value. If you multiply the two together, you will get the same power in the input, and in the output. In a real transformer, there will actually be some losses, so the product (voltage x current) will be slightly smaller in the output, compared to the input. For instance, the voltage might be doubled, while the output might change by a factor of 0.495 (0.5 would be a perfect transformer in this example).
An efficient transformer will convert more than 99% of the input energy into output energy, therefore wasting less than 1%.
This could be dangerous if you aren't very careful. Take the transformer out of the welding machine. Put it on a wooden bench. Apply 12 volts to the input side with a car battery. Measure the input volts with a volt meter and write down the value. Then use your volt meter to measure the output voltage. If you have no output voltage then your transformer is obviously blown. You should read an output voltage that is higher than the input voltage based on the number of winding in the coil and/or the manufacturers specifications. According to Faraday's law the only output voltage you will read is at the exact time power is applied to or taken away from the input when using dc power. Otherwise you will have to apply ac power which is much more powerful ( and more dangerous ) than the 12v dc. Your volt meter may not be designed to read high enough voltage for the output you would see with 110 v ac.
For support, more brain power, input, output can be greater.
For support, more brain power, input, output can be greater.
A 'step-up' transformer is a transformer with more turns on its secondary winding than on its primary winding. It's secondary (output) voltage is, therefore, higher than its primary (input) voltage.
A transformer changes voltage, for more efficient transfer over long distances, or for less voltage from mains supply into a 130v Laptop or equivalent.
becouse its have more input
You don't. Transformers only work with AC voltage. Their input will be an AC waveform, and their output will be an AC waveform. Other electronics are used to convert the stepped down AC waveform from the transformer to DC.