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Transistor Sizing Calculation - Arduino Academy
Transistor Sizing Calculation - Arduino Academy

BJT 2N2222, 2N2222A Datasheet and Application Notes - Homemade Circuit  Projects
BJT 2N2222, 2N2222A Datasheet and Application Notes - Homemade Circuit Projects

Solved Problem 2: (3 pts) A 2N2222 npn transistor is biased | Chegg.com
Solved Problem 2: (3 pts) A 2N2222 npn transistor is biased | Chegg.com

BJT Transistor as a Switch, Saturation Calculator
BJT Transistor as a Switch, Saturation Calculator

2N2222A Pinout, Features, Equivalent & Datasheet
2N2222A Pinout, Features, Equivalent & Datasheet

Different use cases of BC547, 2N3904 and 2N2222
Different use cases of BC547, 2N3904 and 2N2222

Would somebody be kind enough to ELI5 how to calculate the base resistor  required on a 2N2222A (used as a switch) when using a 5V Arduino Uno to  control a solenoid actuator.
Would somebody be kind enough to ELI5 how to calculate the base resistor required on a 2N2222A (used as a switch) when using a 5V Arduino Uno to control a solenoid actuator.

transistors - How to calculate actual hfe for low voltage source? -  Electrical Engineering Stack Exchange
transistors - How to calculate actual hfe for low voltage source? - Electrical Engineering Stack Exchange

Transistor base resistor calculator
Transistor base resistor calculator

How to calculate the transistor base resistor value to switch a load —  Parallax Forums
How to calculate the transistor base resistor value to switch a load — Parallax Forums

Calculating transistor base resistor - General Electronics - Arduino Forum
Calculating transistor base resistor - General Electronics - Arduino Forum

SOLVED: Texts: Question 2: The 2N2222 transistor is used in the circuit  given below. A DC voltage of VCC=16V is applied to the circuit. The  resistors R1=39KΩ, R2=4.7KΩ, RC=3.9KΩ, and RE=1.2KΩ are
SOLVED: Texts: Question 2: The 2N2222 transistor is used in the circuit given below. A DC voltage of VCC=16V is applied to the circuit. The resistors R1=39KΩ, R2=4.7KΩ, RC=3.9KΩ, and RE=1.2KΩ are

2N2222 PBFREE Central Semiconductor Corp | Discrete Semiconductor Products  | DigiKey
2N2222 PBFREE Central Semiconductor Corp | Discrete Semiconductor Products | DigiKey

arduino - What determines how much current can flow through a 2N2222 A? -  Electrical Engineering Stack Exchange
arduino - What determines how much current can flow through a 2N2222 A? - Electrical Engineering Stack Exchange

Calculator res for pc817 and transistor 2n2222a - General Electronics -  Arduino Forum
Calculator res for pc817 and transistor 2n2222a - General Electronics - Arduino Forum

Image result for 2n2222 transistor circuits | Eletronicos
Image result for 2n2222 transistor circuits | Eletronicos

SOLVED: NPN 2N2222 transistor Mid-Band Design Parameters: Vcc = 12 V, Ic =  2 mA, emitter voltage VE = 2 V, RL = 1 kΩ, Rs = 100 Ω VBE = 0.65
SOLVED: NPN 2N2222 transistor Mid-Band Design Parameters: Vcc = 12 V, Ic = 2 mA, emitter voltage VE = 2 V, RL = 1 kΩ, Rs = 100 Ω VBE = 0.65

How to calculate base resistor of a NPN transistor that drives a MOSFET? -  Electrical Engineering Stack Exchange
How to calculate base resistor of a NPN transistor that drives a MOSFET? - Electrical Engineering Stack Exchange

How to calculate the frequency generated by a transistor (2N2222) with a DC  input power source - Quora
How to calculate the frequency generated by a transistor (2N2222) with a DC input power source - Quora

Datasheets.com: Experimenting with the 2N2222 and BC549 transistors - EEWeb
Datasheets.com: Experimenting with the 2N2222 and BC549 transistors - EEWeb

Solved 1. Study the datasheet of the NPN 2N2222 | Chegg.com
Solved 1. Study the datasheet of the NPN 2N2222 | Chegg.com

RC Phase Shift Oscillator with 2N2222 Transistor
RC Phase Shift Oscillator with 2N2222 Transistor

led - 2N2222 NPN transistor base resistor calculation - Electrical  Engineering Stack Exchange
led - 2N2222 NPN transistor base resistor calculation - Electrical Engineering Stack Exchange

Datasheets.com: Experimenting with the 2N2222 and BC549 transistors - EEWeb
Datasheets.com: Experimenting with the 2N2222 and BC549 transistors - EEWeb

2N2222 Transistor Pinout - ElectronicsHacks
2N2222 Transistor Pinout - ElectronicsHacks