K KnightMan New Member Jan 26, 2009 #1 Hi, I need help modifying the values of this circuit to use 2N2222 transistors instead. What value resistors would i need?
Hi, I need help modifying the values of this circuit to use 2N2222 transistors instead. What value resistors would i need?
duffy Well-Known Member Jan 27, 2009 #2 You could try 220Ω, but those are Darlingtons and have much higher gain than a 2N2222. A 2N2222 can only handle about half an amp of current, too. Better be a pretty small stepper or you will blow the transistors!
You could try 220Ω, but those are Darlingtons and have much higher gain than a 2N2222. A 2N2222 can only handle about half an amp of current, too. Better be a pretty small stepper or you will blow the transistors!
Analog New Member Jan 27, 2009 #3 KnightMan said: Hi, I need help modifying the values of this circuit to use 2N2222 transistors instead. What value resistors would i need? Click to expand... Use mosfets FTW.
KnightMan said: Hi, I need help modifying the values of this circuit to use 2N2222 transistors instead. What value resistors would i need? Click to expand... Use mosfets FTW.
duffy Well-Known Member Jan 27, 2009 #4 Yes, use mosfets - N channel, logic level. Don't even need or want resistors.