发明名称 |
Variable electronic impedance circuit |
摘要 |
A variable electronic impedance circuit contains a voltage-current converter having an input terminal which is supplied with an input signal voltage, and a variable-gain current amplifier having an input terminal which is supplied with an output current of the voltage-current converter. The output signal current of the amplifier is fed back to the input terminal of the voltage-current converter. In order to prevent undesirable oscillation immediately after the closure of a power supply switch, the variable electronic impedance circuit includes a control circuit which substantially inhibits the operation of the voltage-current converter for a predetermined time after the closure of the power supply switch.
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申请公布号 |
US4525636(A) |
申请公布日期 |
1985.06.25 |
申请号 |
US19820413147 |
申请日期 |
1982.08.30 |
申请人 |
HITACHI, LTD.;PIONEER ELECTRONIC CORP. |
发明人 |
KOMINAMI, YASUO;OHKUBO, YUICHI;AIZAWA, KOHKI;SASAKI, SATOSHI |
分类号 |
H03G3/10;H03F1/30;H03H11/46;(IPC1-7):H03K3/023;H03K17/16 |
主分类号 |
H03G3/10 |
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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