| 摘要 |
This output stage consists of an emitter-follower transistor (T) biased by a current source (T3). This current source is traversed by a current I substantially equal to n times the current Io of a reference current source in the case of capacitive coupling with a load (R). If the coupling with the load (R) is resistive, a set of transistors (T4, T5, T6) causes the base current to the transistor (T3) to be cancelled and the biasing of the transistor (T) occurs directly through the resistive load. Application to the output stages of power amplifying circuits for video stages. <IMAGE>
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