1/16/2024 0 Comments 2n 3904 b331In high speed switching the trigger is provided by microcontroller instead of button.In this blog, Apogeeweb has prepared 8 simple 2N3904 circuits for electronics enthusiasts. In this way we can turn motor ON and OFF by using simple button as a trigger and 2N5401 as switching device. The moment the button is released the base current will reaches zero, there by turning OFF the transistor and the motor. In the presence of the voltage the motor will start rotating and it will stay like that until the button is released. In the presence of this collector current flow a voltage appears across the motor connected in series with collector pin. When the base current flows out from the device it will start conducting as stated in characteristics. When the transistor does not conduct the entire voltage appears across it and the motor will be OFF.Ĭonsider the button is pressed: When the button is pressed, the base of 2N5401 will be connected to negative power supply and so there will be a path for the current flow.
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