My meaning of Vemitter means 'voltage at the emitter', obviously.
You still haven't realized there is no such parameter ? Can you find that on a datasheet ?(no)As with everything else you post on this forum, you just made that up because you have no formal training in electronics.
I meant that 'Vemitter' just means voltage at the emitter. So just accept it, and move along.
The problem is that the voltage on the emitter is 0V because it is connected to ground so what is the point of saying Vemitter when you can just say GND ?
To ensure that Ve (or Vemitter) into account if somebody connects the load on the emitter side (emitter follower configuration).
Can you not see where the load goes in the OP's schematic ?
What configuration do YOU call this ?
Let me enlighten you. The OP did not post a schematic at first. The OP posted a schematic at some stage after their first post. So it makes sense to use Vemitter.... to cover bases.
I'm amazed that this thread has gone for so long. As has been mentioned a number of times now, the correct way to drive the transistor into saturation for switching is to provide Ic/10 or at the very least, Ic/20 to the base.
Agreed. A great rule of thumb you mentioned OldSteve. The Ic/Ib = 10 one
At least I got that right.
In the OP he approximates, saying " maybe 15 - 20 LEDs per transistor"
Then why use transistors ?