发明名称 |
Korrektionskrets för en spänning för automatisk förstärkningskontroll |
摘要 |
An object of the present invention is to provide an AGC voltage correction circuit unaffected by a change in temperature. Since base-emitter voltages VBE of transistors Q9 and Q10 constituting a first reference current source 7 have temperature dependency, the variations of the gains of amplification transistors Q17 and Q18 dependent on temperature are diminished. Since transistors Q1 and Q2 constituting a second reference current source 2 have temperature dependency, a gain slope concerning amplification transistors Q17 and Q18 relative to temperature is corrected linearly. |
申请公布号 |
SE520849(C2) |
申请公布日期 |
2003.09.02 |
申请号 |
SE19970001480 |
申请日期 |
1997.04.21 |
申请人 |
ALPS ELECTRIC CO LTD |
发明人 |
SADAO IGARASHI;KAZUHARU AOKI;SATOSHI URABE |
分类号 |
H03G3/20;H03F1/30;H03F3/45;H03G1/04;H03G3/02;H03G3/10;H03G3/30;(IPC1-7):H03F3/45;H03G1/00 |
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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