What is the meaning of the main part of the transformer?

* Question

* Answer

The meaning of the main part of the transformer model is as follows.

(1) DB represents a power transformer.

(2) CB represents an audio output transformer.

(3) RB represents an audio input transformer.

(4) GB indicates a high voltage transformer.

(5) HB represents a filament transformer.

(6) SB or ZB represents an audio (fixed resistance) conveyor transformer.