Similarly, a transistor maps a lower-voltage current onto a higher-voltage current. So, a small low-current circuit can use a transistor to control a motor or somesuch that requires a much higher …

Apr 9, 2021 · 6 What does a FET actually do? A FET is a transistor which uses the to control current flow. The trick is that applying a (constant) electric field does not need any current and …

Mar 1, 2021 · I just can not understand why it is that variations in the base current should amplify the current through the transistor. If I am understanding correctly, if we apply a current on a …

Dec 2, 2018 · 0 I am wondering why a transistor, such as one used in this Zener diode + Transistor regulator , has the output controlled by the base voltage rather than the collector.

May 6, 2023 · 3 To understand a bipolar transistor current mirror, it is easiest to consider that the collector current is controlled by the base-emitter voltage (via an exponential relationship). …

May 6, 2019 · The transistor Iout versus Vout characteristic does have a slope, which we label the Early Voltage and model as a straight line; that line does not pass thru (0,0), but you can …

Jan 25, 2023 · When the transistor is on, the current still passes through the collector resistor, but the equivalent resistance of the transistor between emitter and collector is much lower than the …

Mar 18, 2022 · Components: the 5V fan (DC motor in the image) 680Ω resistor NPN transistor (2N2222) So the Pi's 5V pin are connected to the positive lead on the fan and the ground is …

Jan 22, 2020 · I am having a very hard time understanding when exactly a transistor turns on. For example in the following circuit from Everycircuit: Why does the transistor turn on when the …

Oct 3, 2020 · This explanation contains some simplifications: I do not talk about base-emitter voltage drop for transistors and the like, but for this particular circuit they should not have …