Outline : 
Multi-aperture cores are used in Balun(balance-unbalance) transformers and find wide application as broadband tranformers in communication and CATV circuits .Multi-Holes are used for small HF transformers, for voltage or impedance matching in TV, communications, data transmission, instrumentation and similar applications. They are available with 2 and 6 holes, in round and rectangular shapes .

 Features :
Wide range of shapes, several grades, for HF matching and suppression. High saturation flux density and low losses at the normal working conditions. (100~500khz at 80~120° C). The slots in the rods decreases the eddy current losses and have an additional cooling effect .

 Applications : 
Impedance coils for industrial HF welding equipment , TV communitcations, Data tuansmission , Power line filter .