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
Circuit 1: Thermostat controller composed of LM75 intelligent temperature sensor and 2N3904 transistor.
Circuit 6: 2N3904 Sample Circuit-Amplifier
Circuit 7:How to design a 13.56mhz sine wave power amplifier circuit with 2N3904