EHG Technical Information - Nikkoshi Philippines Corporation

EHG TECHNICAL INFORMATION

EHG generates an output through the movement of a single magnet and its combination with magnets enables a wide range of applications. Our generators are mounted on the rotary encoders for the motors that drives industrial robotic arms. They can detect the rotational frequency and accuracy of motors and generate power magnetically to drive ICs.

HOW TO USE

Direction of Linear Motion

It is designed for proximity sensors, opening/closing sensors, and security devices.

Direction of Reciprocal Motion

It can be utilized on a wide range of industrial equipment, including malfunction preventive devices.

Detection of Rotary Motion

It can be used to prevent the failure of industrial motors, flow meters, speed meters, and rotating bodies, as well as rotation sensors to prevent chattering.

OPERATING PRINCIPLE

In this illustration, a detection coil is wrapped around a composite magnetic wire. The inner magnetic property distribution of the wire has two structures: a soft magnetic layer on the outside and a hard magnetic layer on the inner side.

The rotator rotates and the inverted external magnetic field becomes stronger.

Large Barkhausen Jump

If an inverted external magnetic field exceeds a certain value, the Large Barkhausen Jump in which the magnetization direction outside the magnetic wire inverts at once occurs. The change in the magnetic field at this time is detected as a pulse voltage using a coil. Regardless of the change rate of the external magnetic field, constant pulse voltage is generated at all times. Even in the case of slow magnetic field change such as once a day, no chattering occurs.

In this illustration, a detection coil is wrapped around a composite magnetic wire. The inner magnetic property distribution of the wire has two structures: a soft magnetic layer on the outside and a hard magnetic layer on the inner side.

The rotator rotates and the inverted external magnetic field becomes stronger.

Large Barkhausen Jump

If an inverted external magnetic field exceeds a certain value, the Large Barkhausen Jump in which the magnetization direction outside the magnetic wire inverts at once occurs. The change in the magnetic field at this time is detected as a pulse voltage using a coil. Regardless of the change rate of the external magnetic field, constant pulse voltage is generated at all times. Even in the case of slow magnetic field change such as once a day, no chattering occurs.

OUTPUT WAVEFORM

BLUE LINE – Magnetic field intensity

YELLOW LINE – EH generator output waveform

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Nikkoshi Philippines Corporation

LTI Factory (Head Office)

108 Technology Avenue, SEPZ,
Laguna Technopark Inc.,
Binan, Laguna, Philippines 4024

FPIP Factory

Lot 3, First St., Phase 1-A
First Philippine Industrial Park,
Brgy. Sta. Anastacia, Sto. Tomas, Batangas
Philippines 42347

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NIKKOSHI PHILS. CORP.

Nikkoshi Philippines Corporation (NIPHCO), a 1999-founded subsidiary of Nikkoshi Co., Ltd. in Japan, strives to be the leading supplier of cost-effective, high-quality electronic parts and unit products worldwide. NIPHCO’s current line of business involves assembly of money counting machines, wafer assemblies, solenoid assemblies, magnetoresistive sensors (MR sensors), and coil windings (bobbin-type, bobbinless, and toroidal types). With 24 years of experience in the electronics industry, NIPHCO is confident of its core technologies in coil winding, clean room operations, inspection and assembly.