发明名称 |
CIRCUIT ARRANGEMENT FOR CONTROLLING THE LEVEL OF ELECTRICAL SIGNALS |
摘要 |
For controlling the level of electrical signals a circuit arrangement is formed with two series connected amplifiers. A first amplifier containing a first variable resistor, operates at maximum amplification when a low input signal level is received. A second amplifier comprises a series connection of a second variable resistor and a current-controlled voltage source with two complementary outputs. The outputs of the voltage source are connected to a comparator and a controller with two separate outputs. One of the controller outputs transmits a control signal while the other output simultaneously transmits a blocking signal. A first output of the controller is connected with the first variable resistor, while a second output of the controller is connected to the second variable resistor.
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申请公布号 |
CA2024354(A1) |
申请公布日期 |
1991.03.01 |
申请号 |
CA19902024354 |
申请日期 |
1990.08.30 |
申请人 |
KE KOMMUNIKATIONS ELEKTRONIK G.M.B.H. & CO. |
发明人 |
BRAHMS, MARTIN;HENNIG, ANDREAS;TIMMERMANN, ANDREAS |
分类号 |
H03G3/20;H03G3/30;(IPC1-7):H03K5/24 |
主分类号 |
H03G3/20 |
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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