110 To 12v Transformer High Frequency Transformer Phenolic Bobbin

EC28 110V 12v Transformer High Quality High Frequency Transformer

Product description:

The high-frequency transformer is a transformer that works on the principle of electromagnetic induction. It refers to adding alternating voltage to the primary winding of the coil, generating alternating magnetic flux, and inducing an output voltage on the secondary winding, thereby transmitting energy and transforming voltage (or signal). ), the role of electrical insulation isolation.
To generate electromagnetic induction, the primary winding must be added with alternating voltage, and it is impossible to have a transformer with DC voltage as the working power supply. The statement that the DC voltage is used as the working power supply is a misunderstanding of including the DC to AC inverter or the variable frequency power supply within the scope of the transformer.
As long as there is electromagnetic induction, the transformer can work without having a magnetic core. For example, an electronic transformer with an operating frequency of MHz is an air-core transformer made of a printed circuit board. The statement that high-frequency electronic transformers are "magnetic transformers used in frequency conversion circuits" belongs to the double misunderstanding of not only including frequency conversion circuits in the scope of transformers, but also that transformers must have magnetic cores.
Transformers transmit energy through electromagnetic induction regardless of the operating frequency. The amount of transmitted energy is related to the material, structure, size and operating frequency of the transformer. If the transmitted energy is a fixed value, the working frequency is high, the number of times of energy transmission in a certain period of time is large, and the energy transmitted each time can be less, then the transformer uses less material and small structural size. It is a misunderstanding to put the cart before the horse. Using pulse width modulation (PWM) to change the transmission energy and voltage of the transformer is just an additional control method, which can be used not only for high-frequency transformers, but also for low-frequency transformers. It is also a misunderstanding that after PWM control, the high-frequency transformer and the low-frequency transformer transmit energy differently, and the high-frequency transformer and the low-frequency transformer change the voltage differently.