发明公开
- 专利标题： Polarity reversal circuit
- 专利标题（中）： Polaritätsumkehrungsschaltung。
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申请号： EP86200271.4申请日： 1986-02-21
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公开(公告)号： EP0193244A2公开(公告)日： 1986-09-03
- 发明人: Pieters, Jozef Frans Pharida , Beckers, Stéphan Theo Marthe
- 申请人： BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap , ALCATEL N.V.
- 申请人地址： Francis Wellesplein 1 B-2000 Antwerp BE
- 专利权人： BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap,ALCATEL N.V.
- 当前专利权人： BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap,ALCATEL N.V.
- 当前专利权人地址： Francis Wellesplein 1 B-2000 Antwerp BE
- 代理机构： Vermeersch, Robert
- 优先权： BE901837 19850228
- 主分类号： H04Q1/38
- IPC分类号： H04Q1/38 ; H04M19/00
摘要：
Polarity reversal circuit including a differential amplifier (Tl/4) and a signal source able to apply a constant voltage and a gradually varying voltage to respective inputs of the amplifier each via the series connection of the gate-to- source path of a field effecttransistor (NM2/3), the base-emitterfunc- tion of a bipolar transistor (T7/8) and a resistance (R14/18) constituting together with another resistance (R15/19) a voltage divider connected to a temperature independent reference voltage (VREF).
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