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In this article, we have produced 7 simple 2N3904 circuits for electronic enthusiasts. These circuit diagrams are essentially beginner-friendly types. Hope the circuit diagrams are helpful to you.😀

Source: Apogeeweb Semiconductor Electronic

 

2N3904 Circuit

  • Circuit 1: Thermostat controller composed of LM75 intelligent temperature sensor and 2N3904 transistor.

image.png.7459021d1d8d1784d60cb242876eea1b.png

  • Circuit 2

image.png.62b62981b955d7a30b7f9442336d1e03.png

  • Circuit 3

image.png.88acfb27a4b5460803fe85e527e5ad63.png

  • Circuit 4

image.png.793a0521ab646e0e7a5c8e684eb98935.png

  • Circuit 5

image.png.1102fe603838031368a30aa311ad287f.png

  • Circuit 6: 2N3904 Sample Circuit-Amplifier

image.png.18c1bd7d76af410a290a4fdd721efd76.png

  • Circuit 7:How to design a 13.56mhz sine wave power amplifier circuit with 2N3904

image.png.e122dfd27e7af8ed31e9b6cb10342ce2.png

 

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