[sdiy] Driving an LED with an NPN via -15

[Peter Grenader]

Peoples,

I have a quicky qustion for yooz guys:

I've got an avalaible voltage swing between -15 and ground.  I have an
unnused section of a NPN transistor array, I want to use it to drive an LED.

I'm thinking....

-15 to the emitter of the NPN, the collector to the cathode of the LED via a
current limit resistor, the anode to ground.  As the base swings up from -15
toward ground, the NPN conducts, passed the -15, MR. LED lights up.

yes?


Sorry for the simpleton questions.  As you know, I am a dweeb when it comes
to this stuff.  A dweeb who has only used NPN to pass ground signals.

let me know when you can,

P