Can isolation transformers resist interference?

Isolation transformer is a transformer commonly used in power systems. It is widely used in medical equipment, communication equipment, high-precision instruments, computer systems and other applications where power supply quality stability and work safety performance need to be ensured. The main function of the isolation transformer is to isolate the electrical connection between the input and output ports to form an independent electrical system, thereby preventing interference and noise from affecting the output ports.

However, the isolation transformer is not omnipotent, nor can it completely eliminate interference, it can only minimize the transmission of interference. Therefore, in practical applications, we need to select the most suitable isolation transformer according to the specific type and degree of interference.

Below, we will introduce the anti-interference characteristics and application methods of isolation transformers in detail:

1. Anti-interference characteristics of isolation transformers

Isolation transformers It is a basic form of transformer in which the electrical connection between the input and output ports is achieved by an isolating winding. It has the following advantages:

1. Reduce the high-frequency noise of the main power supply

Ordinary transformers will transmit the high-frequency noise of the main power supply to the output port, thereby affecting the output signal the quality of. The isolation transformer can isolate the main power supply and the output port, thereby effectively reducing the high-frequency noise of the main power supply and ensuring stable signal quality at the output port.

2. Block current interference

The isolation transformer can effectively block the current interference in the power supply from propagating from the output end to the input end. For example, phase shifts, peak transients, AC interference, etc. in the power supply will not be transmitted to the output end, thus ensuring the electrical safety of the output end.

3. Improve the safety of equipment

Isolation transformers can effectively prevent interference and noise from other equipment/facilities from affecting the input and output of low-level signals such as computers. . This can improve the safety factor of equipment parts and give users more peace of mind.

2. Application methods of isolation transformers

In order to make more effective use of the interference defense capabilities of isolation transformers, we need to adopt different application methods of isolation transformers according to the actual situation. The following are several common application methods:

1. Series isolation transformer

When you want to protect equipment from damage caused by faults or interference, series isolation transformers are a Very practical method. By connecting two isolation transformers externally, you can easily isolate all interference between your computer and the mains power supply.

2. Use standard wires

If you have used some office equipment that is wired outdoors, you may be struck by lightning or interfered with. To assist with these issues, an isolation transformer can be connected using standard electrical wiring products, which will make the equipment safer.

3. Choose a low-noise isolation transformer

If you use power equipment with a high noise level, then choosing an isolation transformer with a good sound insulation level can ensure the output signal The quality is clearer and more precise.

4. Weigh price and performance

There are many solutions with different prices for isolation transformers. Some lower-cost solutions can perform basic interference protection functions better, but without excessive adaptation in some details, some defects may occur. If you need to choose between quality and price, then choosing an affordable isolation transformer based on actual needs is a good choice.

In summary, the isolation transformer has the ability to resist interference, but it is not 100%. In the actual application process, we should choose and adopt different isolation transformer application methods according to specific conditions. Through reasonable use and layout, we can achieve the expected interference protection goals and improve the safety of the equipment and the quality of the signal.