8/30/2023 0 Comments 2n3904 pinout download freeThe 2N3904 can be used in a variety of electronic circuits, such as amplifiers, switch drivers, and general-purpose switching applications. Some of the technical specifications of the 2N3904 are:Ĭollector-Emitter Saturation Voltage: 0.2V It is a small signal transistor with a maximum collector current of 200 mA and a maximum collector-emitter voltage of 40 V. NPN silicon epitaxial planar transistor for switching and Amplifier applicationsĢN3904 is a commonly used NPN bipolar junction transistor (BJT) in electronic circuits for amplification and switching applications. NPN SILICON PLANAR EPITAXIAL SWITCHING TRANSISTORS The relay should have the same voltage as the power supply/operating voltage.NPN Silicon Transistor (General small signal application) You can either use a power supply or a battery to operate this circuit. Points to be noted: After you are done with building the circuit, make sure to arrange the switch in a 0 to 9 keypad manner. Even if one switch from S1 to S5 will be off the relay will not activate. The working of this circuit is easy when the switches from S1 to S5 are turned on the relay will get the input signal and activates and when S6 to S10 are on the relay will remain inactive. switches from S1 to S5 are connected in series between the base of the transistor and the positive supply whereas other switches S6 to S10 are connected in parallel across the base and the negative end of the supply. The circuit is made up of a transistor switch. For a detailed description of pinout, dimension features, and specifications download the datasheet of 2N3904 Transistor Code Lock Circuit Working Explanation
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