发明名称 |
POLARITY REVERSAL CIRCUIT |
摘要 |
The invertor consists of a subscriber line circuit which contains two operational amplifiers and is controlled by the outputs of a differential amplifier. The emitters of the transistors in the differential amplifier are fed by a common polarity switching circuit; the input to the switching circuit being a logic level signal. The two differential amplifier inputs are supplied by circuits which divide the output of a voltage reference source. The reference source is also controlled by logic level signals. Current summing techniques used in the input circuit to one side of the differential amplifier ensure that temperature changes do not affect the accuracy of the inversion. |
申请公布号 |
AU5364886(A) |
申请公布日期 |
1986.09.04 |
申请号 |
AU19860053648 |
申请日期 |
1986.02.17 |
申请人 |
INTERNATIONAL STANDARD ELECTRIC CORP. |
发明人 |
JOZEF FRANS PHARIDA PIETERS;STEPHAN THEO MARTHE BECKERS |
分类号 |
H03F3/45;H04M3/00;H04M15/28;H04M19/02;H04Q1/38 |
主分类号 |
H03F3/45 |
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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