CRT MAGNETIC COMPENSATING CIRCUIT WITH PARALLEL AMORPHOUS WIRES IN THE SENSOR

• Main Authors: SATO, TAKASHI, YAMANOBE, YASUNORI, MONMA, AKIO
• Format: Patent
• Language: English; Korean
• Published: 16.10.2000
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TESTING

자기센서(1)와, 자기보정용의 신호를 발생시키는 제어회로(2)와, 자기보정용코일(3)를 구비하고 있다. 자기센서는 평행으로 배치된 1쌍의 무종형 자성체 와이어(101)와, 1쌍의 무정형 자성체 와이어에 상호 반대방향의 바이어스자계를 부여하는 코일(102)과, 1쌍의 무정형 자성체 와이어에 고주파 전류를 통전하는 고주파 전원(105)과, 1쌍의 무정형 자성체 와이어 각 출력단으로부터 얻어지는 전압차를 출력하기 위한 회로(106,107,108,109)를 구비하고 있다. 이 자기보정회로는 미소한 외부자계도 정도가 양호하게 검출할 수 있다. A magnetic compensating circuit includes a magnetic sensor (1), a control circuit (2) for generating a signal for magnetic compensation, and coils (3) for magnetic compensation. The magnetic sensor has a pair of amorphous magnetic substance wires (101) arranged in parallel, coils (102) for providing the pair of amorphous magnetic substance wires with bias magnetic fields in directions opposite to each other, a high-frequency power source (105) for supplying the pair of amorphous magnetic substance wires with high-frequency currents, and circuits (106, 107, 108, 109) for outputting a potential difference derived from the output of the pair of amorphous magnetic substance wires. Thus, this magnetic compensating circuit is capable of detecting a minute external magnetic field with high accuracy.