Title:
フック・スイッチ制御装置を含む分離アンプ
Document Type and Number:
Japanese Patent JP4564109
Kind Code:
B2
Abstract:
An isolation amplifier circuit with hook switch control includes first and second amplifier stages optically isolated from and coupled to each other. A biasing circuit is optically coupled to the amplifier to provide a switchable prebias to the amplifier to allow the amplifier to process bipolar voltage input signals. A hook switch circuit is coupled to the biasing circuit such that as the bias condition is switched, the hook switch is opened or closed. The same optical coupling circuitry can be used to couple the first and second amplifier stages and to couple the biasing circuit to the hook switch circuit such that savings in circuit space and cost are realized.
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Inventors:
Gambling The, Michael J.
Application Number:
JP50326299A
Publication Date:
October 20, 2010
Filing Date:
June 12, 1998
Export Citation:
Assignee:
Cp Clair Corporation
International Classes:
H04M1/738; H04M11/00; H04M11/06
Domestic Patent References:
| JP8088693A |
Foreign References:
| US4282604 |
Attorney, Agent or Firm:
Masao Okabe
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
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