A step-up transformer steps up the voltage rather than stepping down the voltage like a normal ac wall adapter does. By stepping up the voltage it is not free electricity it allspice takes away from the available amps.
e.g.
Say you have 12V 1A AC going in to the primary coil of your step up transformer, this would result in a higher voltage and lesser amps like 24V 0.5A AC coming out of the secondary coil.
AnswerA step-up transformer steps up voltage, but it DOES NOT 'step down' current! The secondary current is determined by the load, and the primary current is then determined by the value of secondary current.
Power is normally transmitted at high voltage through step up/step down transformers to minimize the power losses in the transmission lines (this is one reason anyway). Since power loss is equivalent to the resistance of the conductor times the current squared, stepping up the voltage by a factor of two cuts the transmission losses by a factor of (2^2 = ) 4.
A transformer that increases voltage is a step-up transformer.
the difference between a step up transformer and a step down transformer is that, in a tsep up transformer, the voltage secondary is greater than the primary side but in a step down transformer, the voltage secondary is lesser than the primary side
Rectifiers turn A/C into D/C, but transformers can only run on A/C.
When the voltage need to be step up.
A step-up transformer produces a voltage across its secondary winding which is higher than its primary winding. The secondary winding is connected to the load, while the primary winding is connected to the supply.
in transformers for instance a stepup transformer does exactly that, steps up the voltageAND/OR theamperage and a step down transformer reduces the same. if you have a machine that operates on say 120 volts alternating current single phase and your building or power supply in your buildingis set up for or delivers480 volts alternating current-three phase you will need a step down transformer to operate the machine.
Power is normally transmitted at high voltage through step up/step down transformers to minimize the power losses in the transmission lines (this is one reason anyway). Since power loss is equivalent to the resistance of the conductor times the current squared, stepping up the voltage by a factor of two cuts the transmission losses by a factor of (2^2 = ) 4.
Confusing question! If it is, why transformers use ac? Then it is, for induction there must be change in flux linkage which is possible with ac which frequently changes polarity. In dc there wont be any change. If que is, why step up is used? There will be considerable voltage drop with distant transmission. For this reason step up voltage is required with step up transformer. Since, in high voltages this drop is negligible or efficient transmission
A step up transformer is used to step up an AC voltage
A transformer is used to step up or step down a Voltage supply.
The function of a step up transformer is to step up the voltage given to it. For eg 11/32KV transformer steps up 11 KV to 32 KV. The function of step down transformer is to step down voltage For eg 420/230 V it steps down 420V to 230 V It does step up or down According to step up or step down ratio called transformation ratio k which equals to K=Ns/Np =Vs/Vp =Ip/Is ie ratios Ns:Np=Vs:Vp=Ip:Is=k Vs=secondary voltage Vp=primary voltage Ns=secondary number of turns Np=primary number of turns Is=secondary current Ip=primary current
A transformer that increases voltage is a step-up transformer.
Transformer function is either to step-up or down the voltage. There is nothing like an ordinary transformer.
step- up transformer
A step-up transformer is a transformer that increases voltage that is transferred through power lines.
They do not step up energy. They can step up voltage.