im using a TIP120 NPN to switch my 5v 1.1A solenoid, but my solenoid isnt working unless i give it a little push i think its my resistor problem what value of resistor should i use for my base of transistor.

need help TIP120 NPN

justone April 22, 2018, 11:32pm 12

Don't forget the kickback diode across the solenoid.

No need for it since the TIP120 already has a builtin kickback diode. See the datasheet.

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