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The two NPN transistors are connected so that the Collector current of the first transistor, TR1 becomes the Base current of the second transistor TR2. The application of a positive base current to ...

Figure 2. These LDO examples show how to use (a) low VCEsat NPN-BJT and (b) VCEsat PNP-BJT as pass transistors. Device matching is still relevant In many electronic circuits, the exact values of BJT ...

NPN and PNP Transistor Pulse Outputs: An Open Collector NPN output is configured like a switch to the 0V supply of the flow meter. It requires a ‘Pull-Up’ resistor connected to a positive voltage.

In the early days, PNP bipolar transistors were common, but the bulk of circuits you see today use NPN transistors. As [Aaron Danner] points out, many people think PNP transistors are “backwa… ...

Feb 21, 2023 The switch - analogous to a transistor - made from a single fullerene molecule (Nanowerk News) For the first time, an international team of researchers, including those from the ...

Cutoff region: BJT operates in this zone in switching operations. In cutoff, the transistor is inactive. Active region: BJT operates in this zone for amplifier circuits because the transistor can ...