opto-isolator

[Doug Tymofichuk]

Paul,

This is a General Electric 4N25 opto-isolator manufactured 
in the 28th week of 1989, I believe. NPN transistor output, 
good to about 300KHz. Pin 1 is LED anode, pin 2 is cathode. 
Phototransistor emitter is pin 4, collector is pin 5, and 
base is pin 6.

Hope this helps,
Doug

On Thu, 13 May 1999 08:07:59 GMT Paul Maddox 
<space_banana at hotmail.com> wrote:

> Dear all,
> 
>   I have an opto-isolator and was wondering if anyone knew 
> who made it or how fast it is.. I want to use it with my 
> Midi interface.
> 
>   Its has these markings on it
> 
>     GE
>     4N25
>     8928
> 
>   im assuming its made by GE (who ever they are/were) and 
> its a 4n258928... anyone offer any help?
> 
>   Paul
> 
> 
> 
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----------------------
Doug Tymofichuk
dougt at cancerboard.ab.ca