发明名称 |
FILTERS TUNED BY SWITCHING, AND THEIR USE IN AN EQUALIZER OF A MAGNETIC RECORDING DEVICE |
摘要 |
A switch-tuned filter comprises a capacitive filter and a resonant filter both receiving an input signal to be filtered. The resonant filter comprises a gyrator the frequency response of which depends on circuit parameters in two circuit paths therein. A tuning switch is arranged to select the values of the parameters in each of these circuit paths. The output signals of the gyrator and the capacitive filter are combined to form the filtered output signal. The circuit can be used as an equalizer in a magnetic tape recorder. |
申请公布号 |
DE3066298(D1) |
申请公布日期 |
1984.03.01 |
申请号 |
DE19803066298 |
申请日期 |
1980.10.06 |
申请人 |
ENERTEC SOCIETE ANONYME |
发明人 |
LELANDAIS, GUY |
分类号 |
G11B5/035;H03G5/02;(IPC1-7):H03G5/04;G11B5/45 |
主分类号 |
G11B5/035 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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