An SMD current transformer for electronic applications. Based on an EE5 core (5mm size), with secondary winding made from copper wire terminated to narrower terminals.
The part with the printed number is a single turn of the primary winding with terminals on left-right (of the photo). All glued together. Epcos product: SMT current sense transformer, EE 5.0 core, operating frequency 50kHz - 1MHz, maximum primary current 20A. http://www.epcos.com/inf/85/ds/b82801b.pdf {accessed 12 Jan 2013}
epcos_smt_current_sense_transformer_magnetica.jpg
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