ok , that means there is no difference just the type of transistor ?The Second method as you ask is for using a PNP transistor this is Normal, whereas the first method, uses R2 to turn on the transistor and R3 for Hysteresis.
ok , that means there is no difference just the type of transistor ?The Second method as you ask is for using a PNP transistor this is Normal, whereas the first method, uses R2 to turn on the transistor and R3 for Hysteresis.