Transistor oscillator with accurate output voltage swing prediction - is based on limiting effect of differentially connected transistor pairs,申请号FR19790000524-传众专利搜索

Transistor oscillator with accurate output voltage swing prediction - is based on limiting effect of differentially connected transistor pairs

申请公布号：FR2446560(A1)

申请号：FR19790000524

申请日期：1979.01.10

申请公布日期：1980.08.08

申请人：

TELECOMMUNICAT RADIOELECT TELEPH

发明人：JEAN-LOUIS JEANDOT

分类号：H03K3/0231;(IPC1-7):03K3/282

主分类号：H03K3/0231

摘要：<p>The electronic oscillator allows the designer accurately to predict the voltage swing of the output. The circuit is based on the limiting effect of pairs of transistors connected in a differential arrangement and using one or the other as the oscillator active element. The two transistors (T1, T2) include one NPN bipolar type and one connected in a common emitter configuration to the current source (4). Coupling to both bases is via the secondary winding of a transformer in the collector circuit of one transistor, the bases being connected to opposite ends of the secondary winding. Bias (14) to the bases is direct in one case and through the secondary winding in the second, the oscillatory circuit (1) being either inductor-capacitor in one transistors collector circuit or quartz in the transformer circuit to the second base.</p>