Hello! I know that the base of a transistor must have a resistor connected to it. The problem is that I don't know what resistor to use! I've seen examples using 1k, 10k and 220 ohm resistors. How can I determine what resistor to use for the base? Thanks!

Transistor Base Resistor Choices?

db2db May 15, 2012, 5:23am 15

dkl65:
Closest standard value: 100 ohms. Closest value I have: 330 ohms. I need more resistor values!

3x 330 resistors in parallel is 110 ohms.

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