EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: Filter_head on October 19, 2014, 10:54:41 am
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The LTSPICE model for a transformer is attached. Primary is two windings in parallel with three windings on the secondary side.
The SPICE directive for the mutual coupling between the windings is also shown (assumes ideal coupling).
Q: Is what's shown the proper way to mutually couple the windings for a transformer of this type?
It "appears" to work in the simulation (i.e. produces the voltages expected in the entire amplifier circuit) when inductor values are selected to produce the required voltage drops.
That said, it was easy to do and therefore must be wrong. Can those of you skilled in modeling transformers in SPICE take a peek and chime in (why it's right, wrong or how it should be revised). Will add to this information if more is needed.