Impulse current transformer

Current transformers with the torroide ferrite core are available as transducers of the time-variable currents (esp. impulse) for various osciloscops, voltmeters, spectrum analysers, etc. A current transformer inserts nagligeable resistence into the measured circuit and because there is an inductive coupling, it can be placed into any part of the measured circuit.

No galvanic connection takes place, so that no errors can arise caused by double-earthing.

PT12 PT20 PT50 PT80   Sensitivity 0,5 0,2 0,1 0,1 V/A + 3 % Rise time 10 15 20 30 ns 1 % decay 5 10 100 100 µs Min. Frequency 400 120 40 0 Hz Max. Frequency 75 35 20 15 MHz Imp. current max 100 200 1000 1000 A DC current max. 0,05 0,2 0,5 0,5 A Inserted resistence 0,1 0,05 0,002 0,002 ohm Aperture diameter 3 6 18 40 mm Output BNC     50         50         50        50      ohm