Description
1W 2W 3W 5W 10W 20W 30W Transformer Power Input AC 220V 50HZ Output AC 6V 9V 12V 15V 18V 24V Single/Double.
- Hign-concerned Chemical: None
- Usage: Rectifier
- Model Number: Power transformer
- Origin: Mainland China
- Certification: CE,RoHS
- Power.: 1W/2W/3W/5W/10W/15W/20W/30W/50W/60W/80W
Description:
I-P/U for example,
Dual output, 18-0-18v, 50W power, it is ablout 1.39A, I EPP/U, 50W/(18V p18V) ≈1.39a
Single output, 18V, 50W power, it is ablout 2.78A, I EPP/U, 50W/18V ≈2.78a
Model: EI
Rated Power: 1W 2W 3W 5W 10W 15W 20W 30W
Input voltage: AC 220V r50Hz
Output Voltage: AC Single -6V, 12V, 18V, 24V, 36V
AC dual-6v-0-6v, 12V-0-12V, 15V-0-15V, 18V-0-18V,24V-0-24V
Frequency characteristic: low frequency
Structural style: monophase transformer
Single voltage, input 2 wires, output 2 wires;
Double voltage, input 2 wires, output 3 wires.
Note: red wire is input wire, blue wire is output wire.
Size can refer to the image.
The package contains:
1、 What are the load voltage and no-load voltage of transformers
Transformers are common electrical equipment in power systems, mainly used to change voltage levels. During the working process, the load voltage and no-load voltage of the transformer are very important.
The load voltage is the voltage measured when a transformer is loaded, also known as the effective voltage. When the transformer is loaded, the load voltage will be lower than the no-load voltage, which is caused by losses such as resistance and inductance.
The no-load voltage is the voltage measured without the transformer being loaded, also known as the rated voltage. In the absence of load, the no-load voltage of the transformer is usually slightly higher.
2、 The relationship between load voltage and no-load voltage
There is a close relationship between the load voltage and no-load voltage of transformers. When the transformer is loaded, the load voltage will correspondingly decrease, and the no-load voltage will be higher than the load voltage.
This is caused by changes in the saturation magnetic flux density of the transformer core. As the load current of the transformer increases, the magnetic flux density in the iron core also increases. This will cause the magnetic flux density to approach saturation, causing the leakage inductance of the transformer to offset some of the core magnetic flux induction, resulting in a decrease in load voltage.
At the same time, the impedance of the transformer is also an important factor affecting the relationship between load voltage and no-load voltage. When the impedance of the transformer is large, the decrease in load voltage will be more significant.
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