- Hello, the following quote from the topic confuses me!
It will make sense if the red highlighted text refer to the second case when the load resistance is high? Is that true?With the old, lower-value load resistor in the circuit, a base current of 75 µA would yield a proportional collector current (base current multiplied by β). In the first load line graph, a base current of 75 µA gave a collector current almost twice what was obtained at 40 µA, as the β ratio would predict. However, collector current increases marginally between base currents 75 µA and 40 µA, because the transistor begins to lose sufficient collector-emitter voltage to continue to regulate collector current.
What confuses me is that the red highlighted text should not be related to "the old, lower-value load resistor in the circuit"
- Also I have problem understanding the following quote from the same topic
is this true? I thought the load line should fall on the horizontal portion and avoid to fall on the non horizontal portionTo maintain linear (no-distortion) operation, transistor amplifiers shouldn't be operated at points where the transistor will saturate; that is, where the load line will not potentially fall on the horizontal portion of a collector current curve
- And finally what is the purpose of R1 in the following figure?
Thanks
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