Alan B. Pearce wrote:
>> So I have played around with the Linear Technology
>> spice program - see attached jpeg.
>>     
>
> You will find that the 8N137 opto is a lot faster than the 4N25, but an even
> better one is the Agilent (now Avago Technologies) HCPL-2300 which has an
> amplifier for the PIN diode included, and has very low LED current
> requirement, and is claimed to be 8M baud. Also has UL, CSA and VDE
> approvals for working with mains voltages.
>
>   
What I really don't understand is why these 10MB devices are so 
difficult to find,
if you realize that optical communication through glass fiber goes upto 
10GHz and maybe faster.
Stef
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