Transformer turns around the number and how much V is calculated
3, seeking wire diameter
What is the current required to output 8 volts? Here I assume 2 am.
Transformer output capacity = 8 ╳ 2 = 16 volt
Transformer input capacity = transformer output capacity / 0.8 = 20 VA
Primary coil current I1 = 20/220 = 0.09A
Wire diameter d = 0.8√I
Primary coil wire diameter d1 = 0.8√I1 = 0.8√0.09 = 0.24 mm
Secondary coil wire diameter d2 = 0.8√I2 = 0.8√2 = 1.13 mm
The voltage after the bridge rectifier capacitor is 1.4 times the secondary voltage of the original transformer.
Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.).
2, seeking coil turns
Primary coil n1 = 220 ╳ 9.8 = 2156 turns
Secondary coil n2 = 8 ╳9.8 ╳ 1.0 = 82.32 desirable for 82 turns
1.05 in the calculation of the secondary coil turns is the pressure drop when a load is considered
Transformer turns around the number and how many V calculation method:
1. Find the number of turns per volt:
Number of turns per revolution = 55 / core cross section
For example, the core section = 3.5 ╳ 1.6 = 5.6 square centimeters
Therefore, the number of turns per revolution = 55 / 5.6 = 9.8 turns
