This document discusses different types of transformers. The most common type is a step-down transformer, which is widely used to convert mains voltage to low voltage for powering electronics. It has an insulated lamination core and is available in power ratings ranging from milliwatts to megawatts. Current transformers measure current flowing through their primary coil and provide a proportional current in the secondary coil. Voltage transformers, also called potential transformers, are used for metering and protection in high-voltage circuits, connecting in parallel. Pulse transformers transmit rectangular electrical pulses, optimized for that function. Radio frequency work uses transformers without steel laminations, unsuitable for those frequencies.

1. Types of transformer

2. This is the most common type of
transformer, widely used in appliances to
convert mains voltage to low voltage to
power electronics

3. 1-Widely available in power ratings ranging from mW to MW
2-Insulated lamination minimizes eddy current losses
3-Rectangular core

5. 1-Current transformer
A current transformer (CT) is a series
connected measurement device designed to
provide a current in its secondary coil
proportional to the current flowing in its
primary.

6. Voltage transformers (VT) (also called potential
transformers (PT)) are a parallel connected
type of instrument transformer, used for
metering and protection in high-voltage
circuits or phasor phase shift isolation.

7. A pulse transformer is a transformer that is
optimised for transmitting rectangular
electrical pulses

8. There are several types of transformer used in
radio frequency (RF) work. Steel laminations
are not suitable for RF.

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