环形变压器（Toroidal transformer）.docVIP

环形变压器（Toroidal transformer） Ring transformer features The core of the toroidal transformer is made of seamless cold rolled silicon steel sheet (under the thickness of 0.35mm or less) with seamless winding, which makes its core performance better than the traditional laminated core. The coil ring transformer uniformly wound on the iron core, the coil magnetic flux generated by the direction and the core magnetic circuit is almost completely overlap, compared with laminated excitation energy and iron loss will be reduced by 25%, which brings a series of advantages of the following. 1) high efficiency electric iron core without air gap, overlapping coefficient can reach more than 95%, the permeability of core can be 1.5 ~ 1.8T (laminated core can only take 1.2 ~ 1.4T), high electric efficiency is more than 95%, only 10% of the no-load current laminated. 2) small size, light weight, toroidal transformer laminated transformer can reduce the weight of more than half, as long as the core area of equal, easy to change the core transformer ring length width and height ratio, can be designed to meet the requirements of dimensions. 3) magnetic interference ring transformer core without air gap is small, uniform winding wound on an annular iron core, this structure leads to low magnetic leakage, electromagnetic radiation is small, without additional shielding can be used in electronic equipment with high sensitivity, such as low level amplifier and medical equipment. 4) the vibration noise is small, the iron core has no air gap, the noise of the core induction vibration can be reduced, and the winding is even and tightly wrapped with the ring core, so that the buzz caused by magnetostriction can be effectively reduced. 5) the operating temperature is low, because the iron loss can be 1.1W/kg, iron loss is very small, the core temperature rise is low, the winding is in the lower temperature core, the heat dissipation is good, so the transformer temperature rise is low. 6) the ri