Generally, bobbin transformers are two-winding transformers in which the primary and secondary coils are wound side by side on separate bobbin separated by an insulating barrier to create a two-winding transformer. There is excellent isolation and low capacitive coupling due to the insulating boundary. The split bobbin transformer is very common on PCBs. These transformers have a small size, but still maintain sufficient power and dielectric strength for operation in a wide range of high-tech applications.
Why Split Bobbin Transformers Become available on the market?
Before the split bobbin was developed, a bobbin was an integrated bobbin. When the integrated bobbin was wound, it was necessary to isolate the primary coil from the secondary coil with insulating tape, which was cumbersome and time-consuming. The trend of miniaturization and thinning of electronic components has led to a decrease in the size of transformer winding bobbins as a result of the trend of miniaturization and thinning of electronic components. Their goal is to manufacture transformers in large quantities using automated methods, but the primary coil and secondary coil of the transformer must pass through the same iron core, and their wire diameters and winding turns are different. The secondary coils are wound separately, which causes problems in automated manufacturing and decreases production efficiency. The split bobbin transformer appears at this point in the process.
The advantage of Split Bobbin Transformers?
With the split bobbin transformer spool construction, you will gain high isolation between primary and secondary, low capacitance to minimize line noise, and no need to shield the transformer from electrostatic discharges. The split structure of the transformer enables the isolation of the primary and secondary by the isolation characteristics of the structure itself, eliminating the requirement to wrap the insulating tape for isolation, greatly simplifying the winding process, and for the winding of the second winding frame, after winding is completed, the two winding frames are assembled and nested together to improve the efficiency of coil winding. With its compact design, the split bobbin transformer is highly efficient and can also be used to extend the service life of the transformer at the same time.
