Radio-Frequency Transformers for Bluetooth Speaker

Where ZP is the primary winding impedance, ZS is the secondary winding impedance, (NP/NS) is the transformers turns ratio, and (VP/VS) is the transformers voltage ratio. So for instance, an impedance matching audio transformer that has a turns ratio (or voltage ratio) of say 2:1, will have an impedance ratio of 4:1. Advantages 1.A transformer will increase or decrease AC voltages, currents, or impedance. 2.The available power cannot change, but will slightly decrease, depending on the efficiency of the transformer. 3. A transformer may also be used to isolate grounds. 4.Transformers are need less monitoring required but widely used in power transmission. 5.High efficiency and Less capital/maintenance cost. 6.Easy to move, add and remove. 7.No starting time.