Ring (toroidal) cores made of powdered iron.
Purchase of one piece means purchasing one core described in the auction topic.
Product features:
low losses in the core at high frequency
closed magnetic circuit,
core covered with a layer of blue insulation -green increasing the safety properties of the finished element.
low tolerance Al=10%
Application:
high frequency chokes
60 Hz EMI chokes in differential mode
DC chokes: ≥50 kHz or higher Et / N (Buck / Boost)
Below is a list of cores made of -52 material available at other auctions