![Digital Transistor <Understanding the Principles of Digital Transistors> | Electronics Basics | ROHM Digital Transistor <Understanding the Principles of Digital Transistors> | Electronics Basics | ROHM](https://www.rohm.com/documents/11303/3079232/tr_what4-j_1_01.jpg/b3c8ad8d-a921-4916-bfaf-9eacb0ec5112?t=1542857881423)
Digital Transistor <Understanding the Principles of Digital Transistors> | Electronics Basics | ROHM
![Calculate the value of base resistor in the given circuit. If the current gain of the transistor the given configuration is 90. a gure 3TR TS fart TUI fag Tg Raya Calculate the value of base resistor in the given circuit. If the current gain of the transistor the given configuration is 90. a gure 3TR TS fart TUI fag Tg Raya](https://toppr-doubts-media.s3.amazonaws.com/images/1032660/111ff139-3c2f-4be5-bdc6-99a01b6646ec.jpg)
Calculate the value of base resistor in the given circuit. If the current gain of the transistor the given configuration is 90. a gure 3TR TS fart TUI fag Tg Raya
![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.](https://i.redd.it/7sjr72yrziwb1.jpg)