[sdiy] Driving LEDs

[mark verbos]

Hi there,

When I want to add an LED indicator on a CV output, I usually add an  
NPN with a resistor devider in front of it. Then the LED  from the +  
rail to the collector and a resistor from the emitter to GND. I  
recently opened up a Buchla 255 and was shocked to see an LED driven  
simply by sending the signal through a 10k, from there there's a 62k  
to +15 and the LED down to GND. This is hanging off the output of an  
LF353, before the 220 ohm resistor on the output.

Is there some reason I shouldn't use this technique every time I want  
to add an LED on a CV output? open to discussion...

Mark