![]() ![]() ![]() This can be achieved using a process known as Biasing.īiasing is very important in amplifier design as it establishes the correct operating point of the transistor amplifier ready to receive signals, thereby reducing any distortion to the output signal.Īlso, the use of a static or DC load line drawn onto the output characteristics curves of an amplifier allows us to see all the possible operating points of the transistor from fully “ON” to fully “OFF”, and to which the quiescent operating point or Q-point of the amplifier can be found. Then some way of “presetting” a common emitter amplifier circuit configuration is required so that the transistor can operate between these two maximum or peak values. If some data source only has data for the active region, this is probably good enough.Transistor amplifier’s amplify an AC input signals that alternates between some positive value and a corresponding negative value. In other words, all of the non-linearities are important, and the behaviour in regions outside of as well as including the active region are also important. ![]() I am interested in writing some simulations involving BJTs which requires more information than can be obtained from the typical transistor equations. Some might become dependent on each other if a complete circuit is drawn including an impedance on the base and collector (or emitter) nodes.Īre there any example devices which have (presumably large) tables of data available for download for measurements of these parameters? I don't know if these are all independent - I believe they all are. Transistor temperature, which other variables such as the Collector-Emitter current, might have a second order effect from.Transistor HFE (beta) which is a function of temperature.To explain further, for a simple BJT circuit we have the following variables. Is there anywhere I can download some current-voltage data for a bipolar junction transistor? (It doesn't matter that much which one.) ![]()
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