EI19 Low Frequency Transformer 1:1 Audio Isolation Insert PCB
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1.Product Description
EI19 Low Frequency Transformer 1:1 is a type of electrical
transformer designed for low - frequency applications, with the
"EI19" denoting its core structure and size. The "EI" - shaped
core, composed of E - shaped and I - shaped laminations, offers
efficient magnetic coupling. This core structure helps to minimize
magnetic leakage and enhance the transformer's overall performance.
The "1:1" turns ratio indicates that the number of turns in the
primary and secondary windings is the same. As a result, it does
not step - up or step - down the voltage; instead, it is mainly
used for isolation purposes. By separating the primary and
secondary circuits electrically, it protects sensitive equipment
from electrical interference and potential voltage spikes. In low -
frequency applications such as audio power amplifiers, it can
transfer the audio signal while providing electrical isolation to
ensure signal integrity and prevent unwanted noise. It is also used
in some industrial control systems where galvanic isolation between
different parts of the circuit is required to improve system
stability and reliability. Overall, the EI19 Low Frequency
Transformer 1:1 serves as a crucial component in applications that
demand both electrical isolation and low - frequency signal or
power transfer.
2.Features
GENREAL SPECIFICATION:
| PATRNUMBER | EI19 Hard feet 2+2 |
| STORAGE TEMP RANGE | -45℃ TO +125℃ |
| OPERATING TEMP RANGE | -40℃ TO +85℃ |
| RELATIVE HUMITY RANGE | 5% TO 95% |
ELECTRICAL SPECIFICATION:(25℃)
| TEST | TURNS RATIO | L(1-3) 1KHZ 0.3V 25% | L(4-5) 1KHZ 0.3V 25% | DCR(1-3) 15% | DCR(4-5) 15% | HI-POT 1mA,60S |
| EI1901 | 1:1 | 1.2H | 1.2H | 22Ω | 28Ω | 500V |
| EI1902 | 1:1 | 1.9H | 1.9H | 270Ω | 336Ω | 500V |
| EI1903 | 1:1 | 585mH | 585mH | 60Ω | 75Ω | 500V |
| EI1904 | 1:5 | 2.9H | 150mH | 340Ω | 12.5Ω | 500V |
| EI1905 | 1:11 | 266mH | 17H | 71Ω | 1.58KΩ | 500V |
1. Unique EI-type core structure: the “EI” in EI19 refers to its
core structure made of E-type and I-type silicon steel sheets
laminated together, this structure can effectively enhance the
integrity of the magnetic circuit, reduce magnetic leakage
phenomenon, and then improve the magnetic coupling efficiency of
the transformer, to ensure that in the low-frequency environment,
the power can also be efficiently transmitted and converted.
2.1:1 turns ratio: the transformer has the same number of turns in
the primary and secondary windings, which means that it will not
change the magnitude of the voltage, and its main function is to
realize the electrical isolation between the circuits, which can
effectively prevent the electrical interference of the primary
circuit and the potential voltage spikes from affecting the
secondary circuit to ensure the safe operation of the equipment.
3. Suitable for low-frequency applications: especially designed for
low-frequency scenarios, it performs well in low-frequency fields
such as audio power amplifiers, industrial control, etc. It can
stably transmit low-frequency signals or power, ensure signal
integrity and stability, reduce signal distortion, and meet the
strict requirements of low-frequency signal processing in these
applications.
4. Good electrical isolation performance: With 1:1 turns ratio and
reasonable structural design, it provides reliable electrical
isolation between primary and secondary circuits, which not only
protects sensitive equipment from electrical interference, but also
enhances the stability and reliability of the whole system and
reduces the risk of circuit failure.
5. Compact size: The “19” in the model number generally represents
the size specification of the iron core, and the overall
presentation of a compact size, which is easy to install and layout
inside the equipment with limited space, especially suitable for
application scenarios with strict requirements on the size of the
equipment.
SCHEMATIC:
OUTOINE DIMENSION:UNIT:(mm)
