Wierd Opto Behavior

 

http://senduit.com/e1e047

This is from a 6N138. I used a PC900 configured exactly the same way(but
obvious changed in pin configuration) which gave much better results.

Whats causing this behavior? The rail voltage is 5V.

 

Jon Slaughter wrote:

   Methinks we need more info..a circuit perhaps?

 

Robert Baer wrote:

That's what I thought too.

 

pimpom wrote:

Basic circuit. As I said, the PC900 works just fine. There is no load and
obviously the drive is not the issue. Hence on the output it's obvious(just
a resistor in the standard configuration). i.e., the circuit is the obvious
one... the minimal one to get any useful output from the device.

i.e., it's what you call a "test circuit"... which, IMO, is what you should
assume when no other information is given.

 

On Thu, 11 Mar 2010 09:16:58 -0600, "Jon Slaughter"


Three "obvious"'s when nothing is obvious.


When no context is given, what we assume is that the problem is
underspecified.

John