Liputan6.com, Jakarta The function of the step down transformer is very useful in the electronics field.A transformer or more commonly known as a transformer is a static device that converts electrical power from one circuit to another without any moving parts.The function of the step down transformer performs its action by changing the voltage and current without causing a change in frequency.The transformer works by increasing or decreasing the voltage based on the needs of the machine.The transformer has two coils wrapped around an iron core which is useful as a magnetic field amplifier.Depending on its function, transformers are classified into 2 namely step-up and step-down.Knowing the function of a step down transformer is very important in the field of electronics.The function of step down and step up transformers has a difference.The step down transformer function is often found in AC-DC adapters.The following is a review of the successful step down transformer function Liputan6.com summarized from various sources, Friday (20/3/2020).The transformer works on the principle of electromagnetic induction.The alternating input voltage across the primary produces a magnetic flux which ideally is all connected to the secondary winding.This alternating flux induces an electromotive force (emf) in the secondary winding.If the efficiency is perfect, all the power in the primary winding will be transferred to the secondary winding.A step down transformer is a transformer that reduces the output voltage.A step-down transformer has fewer secondary turns than the primary, so it acts as a voltage reducer.This type of transformer is very easy to find, especially in AC-DC adapters.For example in a power circuit carrying a voltage between 230-110 v exactly.But electrical equipment like a buzzer only needs 16v to operate properly.So, the step down transformer acts on the current and reduces the voltage from 230-110 v to 16v.The function of a step down transformer is to convert a high voltage with a low current into a low voltage with a high current.The main function of a step down transformer is to lower the mains voltage and adjust it to the needs of electronics.Power in a transformer is measured using the product of voltage and current.The power on the transformer is rated in Volts - Amps VA.Ideally, the power in each transformer is constant, i.e. the available power on the transformer secondary is equal to the power on the transformer primary.Transformers work on the principle of "Faraday's law of electromagnetic induction".Faraday stated "when the magnetic flux associated with a circuit changes, the electromotive force induced in the circuit is being proportional to the rate of change in the flux relationship".The transmission action in the transformer is carried out by mutual induction between the windings.The number of turns in the primary and secondary windings each determines the Electromotive Force induced between the two windings and this ratio is referred to as the Turn Ratio.The applications of step down transformers vary, but the main applications of step down transformers are usually in:- The ultimate adapter and charger for cell phones, CD players and stereos.It can be used to lower the voltage level on the transmission line.- In welding machines it is used in reducing the voltage and increasing the current.- Step down transformers are also used in televisions, inverters, and voltage stabilizers or stabilizers.The step up transformer is the opposite of the step down transformer function.The step up transformer functions to increase the voltage and adjust it to the needs of electronics.A step-up transformer is a transformer that has more secondary windings than the primary winding, so it functions as a voltage booster.This transformer is commonly found in power plants as an increase in the voltage generated by the generator into a high voltage used in long-distance transmission.This type of transformer consists of only one winding which is electrically continuous, with a center lead.In this transformer, some of the primary windings are also secondary.The advantage of the autotransformer is its small physical size and lower losses than the two-winding type.A variable autotransformer is actually an ordinary autotransformer whose center leads can be changed, giving an arbitrary primary-secondary winding ratio.Pulse transformer is a transformer specially designed to provide pulse wave output.This type of transformer uses a core material that saturates quickly so that after the primary current reaches a certain point, the magnetic flux stops changing.A three-phase (3-phase) transformer is actually three transformers specially connected to each other.The primary winding is usually star-connected (Y) and the secondary winding is delta-connected.