Profile: Tamura-Europe Ltd. is a manufacturer of electronic components for the industrial, telecom and consumer markets. We are an ISO9001:2000 and ISO14001:2004 certified company. We specialize in the design and manufacture of transformers & inductors, as well as linear & switch mode power supplies & adaptors. In the open loop hall effect current sensor, the magnetic flux, proportional to the primary current, is concentrated in gapped magnetic core containing the hall effect device. The primary current is measured without electrical contact with the primary circuit providing galvanic isolation.