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Biasing circuits for voltage controlled or output circuits

專利號
US10868507B2
公開日期
2020-12-15
申請人
Ronald Quan
發(fā)明人
Ronald Quan
IPC分類
H03G1/00; H03F3/45; H03F1/02; H03G3/30
技術領域
voltage,fet,q1b,amplifier,vds,drain,q1a,or,rfb,r7
地域： CA CA Cupertino

摘要

A number of biasing circuits for amplifiers including voltage controlled amplifier is presented. Also a number of field effect transistor circuits include voltage controlled attenuators or voltage controlled processing circuits. Example circuits include modulators, lower distortion variable voltage controlled resistors, sine wave to triangle wave converters, and or servo controlled biasing circuits.

說明書

The drain and source terminals of Q6 (e.g., in FIG. 29 or FIG. 28), a field effect transistor provides a voltage controlled resistance via control voltage V6.

FIG. 29 includes an embodiment for an output stage to control the quiescent current of output devices Q2 and Q4, which are shown to be bipolar transistors. Alternatively, Q2 and Q4 may include field effect transistors. The Vbe multiplier circuit including Q3 and Q6 provides a biasing voltage via the collector voltage of Q3 and the emitter voltage of Q3 to the base of Q2 and base of Q4 (e.g., respectively). Q2 and Q4 form a push pull emitter follower output stage in this example.

權利要求

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