in recent years, more attention paid to the energy conservation, suppress all sorts of equipment of electricity demand is higher and higher. In particular, the current domestic electricity consumption of about 60% is caused by the consumption of motor, thus achieve the low power consumption of the motor, from the point of view of energy conservation can bring surprising effects.

Recently, the Japanese Alps green device co., LTD developed a small, lightweight and low loss of high precision current sensor - the GCBC series. It is reported that this year September will begin to sell samples. In addition, the series of products will is expected to be held in Tokyo international exhibition center "technological frontier 2013 UK Watson Wchangeorganisation import sensor " exhibition on July 17 solstice (19) this exposition.

Under the above background, able to work through careful control of the motor to rein in power consumption, and in addition to the electric drive device can also help to power regulator of high efficiency, and frequency converter are aroused people's concern. High precision control of key parts of the frequency converter is that the current sensor.

Way, as the main current sensor detected by shunt resistance measurement way and measurement of magnetic flux around the current way. In order to achieve the cost reduction under the condition of high precision detection and widely used method of magnetic flux measurement of the DCCT. General DCCT way using the magnetic components for components of low sensitivity, so you need to use to collect current magnetic flux around the magnetic core material, but with the appearance of the product size and weight increase. And, the existing current sensor for the primary conductor resistance and easy to produce high temperature, high electric loss accordingly.

This product is the smallest and lightest industry level of substrate pasted on current sensors. Because of the high sensitivity magnetic element components (GMR), so don't need to collect the flux core material, so as to realize the W13.4 mmxD15.7 mmxH7.2 mm, the miniaturization of 3 g in weight. And because the element configuration around the unique magnetic control panel, so that the sensitivity and anti-jamming. And the primary conductor resistance value is 60, achieve the minimum level in the same industry.