Toroidal transformers are the core part of electrical appliances and can be seen everywhere in life, such as medical equipment, automatic control equipment, home appliance audio equipment, electronic instruments, security monitoring equipment, etc. However, toroidal transformers are different from ordinary products, and generally are based on demand Customized, because the parameters used in different occasions or different mechanical equipment are different.
1. When the toroidal transformer is selected, it should be matched with the load circuit. Its output power should be slightly larger than the maximum power of the load circuit. The output voltage should be the same as the AC input voltage of the power supply part of the load circuit.
2. The toroidal transformer with good insulation performance must be selected. The insulation performance of the transformer is measured by the insulation resistance of the transformer. The insulation resistance of the transformer mainly includes the insulation resistance between the windings. If the insulation resistance of the transformer differs greatly from the requirements, it should be rejected. In general, the insulation resistance should not be less than 450, and the insulation resistance of the high-voltage toroidal transformer should be greater than 1000.
3. The primary voltage of the toroidal transformer must be consistent with the power supply voltage. Generally, the primary voltage is 220V, there are also 110V and 380V, so you must pay attention when choosing. The secondary voltage of the transformer should be selected according to the needs of the circuit.
4. Toroidal transformers used in electronic equipment should generally be equipped with an electrostatic shielding layer to prevent various high-frequency signals and interference signals in alternating current from entering the electronic equipment through the power transformer.
5. When selecting a transformer, the appearance quality should also be checked first to see if the transformer surface is damaged.