Using NPN 2N3904 as switch - All About Circuits
WEBDec 4, 2022 · The 2N3904 is a weak low current transistor. Its datasheet shows it turned fully on conducting (only) 50mA and a collector-emitter voltage loss of 0.3V max. When it is fully turned on and conducting 50mA then its maximum base-emitter voltage is 0.95V at 5mA. Most Mosfets can conduct hundreds of times more current.
2N3904 NPN Basic Transistor Guide | DigiKey - Digi-Key Electronics
WEBJun 15, 2017 · The 2N3904 is an extremely popular NPN transistor that is used as a simple electronic switch or amplifier that can handle 200 mA (absolute maximum) and frequencies as high as 100 MHz when used as an amplifier.
Base resistor value on 2n3904 used as a switch [closed]
WEBAug 30, 2016 · I want to, and have also managed to use a 2n3904 as a switch/button, where I use a digital pin connected to the base of the 2n3904 to "push" the button which is between the emitter and ground. simulate this circuit – Schematic created using CircuitLab
NPN BJT switch using 2N3904 bipolar junction transistor
WEBJan 17, 2020 · NPN BJT switch using 2N3904 bipolar junction transistor circuit for beginner learning electronics. Patreon / electronzap Links that help me make learning electronics videos are below ...
Using an NPN transistor as a switch to turn on/off a DC Motor
WEBJul 18, 2019 · I am trying to control a 3V DC motor (FA-130) with my Arduino Uno, and am trying to do that using an NPN transistor (2N3904) as a switch, as shown in this diagram. I used the Blink example and mod...
2N3904 Transistor Pinout, Equivalent, Features & Datasheet
WEBNov 23, 2017 · 2N3904 as switch: When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above. As discussed, a transistor will act as an Open switch during Forward Bias and as a closed switch during Reverse Bias, this biasing can be achieved by supplying the required amount of current to the base pin.
2N3904 Transistor Pinout, Datasheet, Specs & Equivalent
WEBMar 23, 2024 · 2N3904 Transistor as a switch In the circuit diagram given above, the 2N3904 transistor is used as a switch to turn ON/OFF an LED connected at the collector terminal. The complete circuit is powered via a 5 V supply.
Introduction to 2N3904 - The Engineering Projects
WEBJun 10, 2017 · 2N3904 is a silicon NPN Bipolar Junction Transistor (BJT), enclosed in TO-92 package and is normally used for switching & amplification purposes. 2N3904 Pinout consists of 3 Pins i.e. Base, Emitter & Collector.
Transistor as a Switch - Using Transistor Switching
WEBTransistor as a Switch. Transistor switches can be used to switch a low voltage DC device (e.g. LED’s) ON or OFF by using a transistor in its saturated or cut-off state.
What is 2N3904 Transistor? Pinout, features and application …
WEBMay 15, 2024 · What is 2N3904? The 2N3904 is an NPN transistor used for general-purpose switching or low-power amplification applications. It is primarily designed for medium- and low-power applications and operates at moderate speed.