Hi everybody,,
I connected a circuit as showen in the figure below>>
The problem is that the circuit works fine for some transistor such as C1815 and BC547, but for others such as C8050, C8550, C945 and A1015 it does not work any more.
Q1: Why this circuit is working for some transistors only??
Q2: Is this circuit is not a good way of biasing (I want the LED to be on only!)??
Q3: Is there a better way of biasing, in consideration of min num. of resistors??
Thanks a Lot!!
I connected a circuit as showen in the figure below>>
The problem is that the circuit works fine for some transistor such as C1815 and BC547, but for others such as C8050, C8550, C945 and A1015 it does not work any more.
Q1: Why this circuit is working for some transistors only??
Q2: Is this circuit is not a good way of biasing (I want the LED to be on only!)??
Q3: Is there a better way of biasing, in consideration of min num. of resistors??
Thanks a Lot!!