difference of a chopper tranformer in a ordinary tranformers

[jin29_neci]

hi! guys!!

Im question what is the diference of a chopper transformer in a ordinary type of a transformers and how does the chopper enables hold a high frequencies?
And im looking for a good definition for this!!!
thanks guys.

 

[lord loh.]

transformer 1. A device using electromagnetic induction
to transfer electrical energy from one circuit
to another (i.e., without direct connection
between them). In its simplest form, a transformer
consists of separate primary and secondary
coils wound on a common core of
ferromagnetic material, such as iron. When an alternating
current flows through the primary coil,
the resulting magnetic flux in the core induces an
alternating voltage across the secondary coil; the
induced voltage can cause a current to flow in an
external circuit. Also see AIR-CORE TRANSFORMER,
INDUCTION, INDUCTIVE COUPLING,
IRON-CORE TRANSFORMER, and TURNS RATIO.
2. A section of radio-frequency (RF) transmission
line used to match impedances.

Also see
LINEAR TRANSFORMER.

chopper power supply Also called power inverter.
A circuit that delivers high-voltage ac from a dc
source. The input is typically 12 volts dc, and the
output is usually 117 volts rms ac. These devices
facilitate the use of small appliances such as
computers, television sets, and communications
radios in portable and mobile environments. The
output of a low-cost power inverter is generally
not a good sine wave. More sophisticated inverters
produce good sine waves and have a frequency
close to 60 Hz.

Quoted from The Illustrated Dictionary of Electronics 8th Edition - Stan Gibilisco.pdf

 

[Russlk]

The frequency limitation of a transformer is determined by the core material. I don't think there is much difference between a chopper transformer and a sinusoidal transformer of the same frequency.

 

[Styx]

The frequency limitation of a transformer is determined by the core material. I don't think there is much difference between a chopper transformer and a sinusoidal transformer of the same frequency.

Agreed, its more describing its operation.