EI35 power frequency transformer Electrical and electronic components
EI35
EI35 low-frequency transformer uses silicon steel sheet laminated core. It operates at a frequency of 50/60Hz, which is the industrial frequency. The power output depends on the stack thickness. It is typically 1 - 10 VA. It can be designed in a PCB pin-type or lead-type structure.
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EI low-frequency transformer is wound with enameled copper wire, enabling voltage transformation and electrical isolation between the primary and secondary circuits. The insulation withstand voltage can meet the safety regulations requirements. The features include a simple structure, low cost, high reliability and mature technology.
Product parameters
| Number of power phases | Single phase | Frequency characteristics | Power frequency |
| Voltage ratio | 220v/12v/9V | Rated power | Customizable |
| Moisture-proof method | Open type | Cooling method | Natural cooling |
| Cooling form | Dry type | Brand | CXWON |
| Winding form | Three-winding | Core shape | EI type |
| Overall structure | Horizontal type | Efficiency (η) | 90% |
Common models
Core Advantages of EI Transformer:
1. EI35 silicon steel sheet material is universal, the stamping laminating process is mature, and the production cost is low, making it suitable for large-scale small power supply projects.
2. It supports two mainstream installation methods: PCB pin-type and lead-type; it is small in size, suitable for small household appliances and control boards with limited installation space.
3. The primary winding is isolated, and it can be made to withstand voltage according to safety standards, possessing an anti-electric shock isolation capability, meeting the safety requirements of power supplies for industrial frequency control.
4. The winding can be freely customized for input and multiple output voltages, and the power can be adjusted according to the laminating thickness. The standard range is 1-10VA, suitable for different voltage specifications.
5. It has a dry structure and does not require oil filling; it can be equipped with a fixed bracket, the assembly is simple, and it is suitable for instruments, security, and household control boards.
2. It supports two mainstream installation methods: PCB pin-type and lead-type; it is small in size, suitable for small household appliances and control boards with limited installation space.
3. The primary winding is isolated, and it can be made to withstand voltage according to safety standards, possessing an anti-electric shock isolation capability, meeting the safety requirements of power supplies for industrial frequency control.
4. The winding can be freely customized for input and multiple output voltages, and the power can be adjusted according to the laminating thickness. The standard range is 1-10VA, suitable for different voltage specifications.
5. It has a dry structure and does not require oil filling; it can be equipped with a fixed bracket, the assembly is simple, and it is suitable for instruments, security, and household control boards.
EI transformer real-shot details：
Typical application scenarios
Flowchart
Company Information:
FAQ
Q: What is the normal power range of EI35?
A: The power is determined by the thickness of the silicon steel sheet stack. The normal power ranges from 1 to 10 VA; the thicker the stack, the higher the output power. Operating beyond the power range will cause severe overheating and saturation of the magnetic core.
A: The power is determined by the thickness of the silicon steel sheet stack. The normal power ranges from 1 to 10 VA; the thicker the stack, the higher the output power. Operating beyond the power range will cause severe overheating and saturation of the magnetic core.
Q: How many installation methods does EI35 have?
A: There are two mainstream ones: PCB pin-type direct soldering on the circuit board; lead-out type with enameled wire, external connection terminals, and additional metal brackets for fixation.
Q: What is the withstand voltage of the primary and secondary of EI35?
A: The normal power frequency safety standard withstand voltage is AC 2000V - 3000V for 1 minute. The insulation grade and withstand voltage indicators can be adjusted according to the product safety standard requirements.
Q: What is the temperature rise of EI35?
A: Under rated load conditions, the normal temperature rise is ≤ 40K; operating beyond the power range for a long time will result in excessive temperature rise and increased noise.
Q: Can EI35 be encapsulated with epoxy resin?
A: Yes, it can be selected to be dry-type without epoxy resin encapsulation or epoxy resin encapsulation; epoxy resin encapsulation can reduce noise, improve moisture-proof and shock resistance performance, but the cost will increase accordingly.
