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Low Frequency Transformer The Classification And Principle

May 27, 2017

  Low Frequency Transformer Low-frequency transformer used to spread the signal voltage and signal power, but also to achieve the impedance matching between the circuit, DC has a role in isolation. High-frequency transformer and low-frequency transformer principle is no difference.But due to the high frequency and low frequency frequency is different. Transformers used in different core. Low-frequency transformers generally use high permeability silicon steel sheet. High-frequency transformer with high-frequency ferrite magnetic core.

  Low Frequency Transformer It is divided into inter-stage coupling transformer, input transformer and output transformer, shape are similar in the power transformer.

1. The inter-pole coupling transformer inter-stage coupling transformer is used between the two-stage audio amplifying circuit as a coupling element to transmit the output signal of the preamplifier circuit to the next stage and to perform appropriate impedance conversion.

2. Input Transformers In earlier semiconductor radios, the transformer used between the audio booster and the power amplifier stage was an input transformer, acting as a signal coupling and transmitting, also known as a push transformer.

The input transformer has a single-ended input and push-pull input. If the push circuit is a single-ended circuit, the input transformer is also a single-ended input transformer; if the push circuit is a push-pull circuit, the input transformer is also a push-pull input transformer.

3. Output transformer output transformer connected to the power amplifier output circuit and the speaker, mainly from the signal transmission and impedance matching role.

Output transformer is also divided into single-ended output transformer and push-pull output transformer two.

  Low Frequency Transformer principle

Tongue 32MM, thick 34MM, E width 96MM, asked the power, the primary 220, the number of turns, the number of rough, sub-51V double group, the maximum power to use more thick lines, mouth refers to the EI-type transformer core Cross-sectional area refers to the middle of the E-piece that cross (inserted in the middle of the Satons transformer skeleton in the middle of the width) that is, the width of the core and inserted into the transformer skeleton in the total thickness of all E films that stack the product is the simplest Refers to the area of the middle of the transformer skeleton, the transformer core cross-sectional area refers to the coil covered part: tongue width × stack thickness = cross-sectional area, unit: C