SunFounder ESP32 Starter Kit
When a High level signal goes through an NPN transistor, it is energized. But a PNP one needs a Low level signal to
manage it. Both types of transistor are frequently used for contactless switches, just like in this experiment.
• S8050 Transistor Datasheet
• S8550 Transistor Datasheet
Put the label side facing us and the pins facing down. The pins from left to right are emitter(e), base(b), and collector(c).
Note:
• The base is the gate controller device for the larger electrical supply.
• In the NPN transistor, the collector is the larger electrical supply and the emitter is the outlet for that supply, the
PNP transistor is just the opposite.
Example
• 5.6 Two Kinds of Transistors (Arduino Project)
700 Chapter 5. Learn about the Components in Your Kit
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