发明名称 |
Signal transfer device having a transfer characteristic which is adjustable in steps |
摘要 |
A step-controlled attenuator circuit which, in order to avoid audible switching clicks in audio equipment, employs current-controlled switches. A switch is switched on by means of a gradually increasing control current and a switch to be switched off is turned off by means of a gradually decreasing control current.
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申请公布号 |
US4430609(A) |
申请公布日期 |
1984.02.07 |
申请号 |
US19810332896 |
申请日期 |
1981.12.21 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
VAN KESSEL, THEODORUS J.;DIJKMANS, EISE C.;VAN UDEN, ALBERTUS J. P. M. |
分类号 |
H03G3/02;G11B20/04;H03G3/00;H03G3/10;H03K17/62;(IPC1-7):H03G3/30 |
主分类号 |
H03G3/02 |
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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