The Static Offset Circuit of the Triode Common-Emitter Amplifier

Published:2011/5/6 20:44:00 Author:Borg | Keyword: Static offset, Common-Emitter Amplifier | From:SeekIC

In the following figure, there is a circuit formed by static potentials and bias voltages of common-emitters(i.e V502,V504 and V506). When the supply voltage changes even a little, the static operating point will be effected, and the brightness on the screen will be effected because the static electrode potential of the output tube changes. Therefore, with this circuit, the bias voltage on the emitter of the amplifier changes synchronously with the supply power of +9V, i.e even when this supply power changes a little, the voltages on the emitters, V502,V504 and V506, will change subsequently, making sure that both of the common- and grounded- transistors won’t change because of the supply power, which means that the static potentials of V501,V503 AND V506 keep steady. This character can not only keep the consistence of piles of products, but also make the brightness of a singal screen not to be effected by the little changes of the supply power.



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