Re: gEDA-user: How to achive ~90us delay on a digital line

[Steven Michalske <smichalske@xxxxxxxxx>]

add a 26.98 meter spool of wire, to wind it,  fold in half then spin  
around a spool, this is to remove the inductance of the coil.

:-P

-- or --

maxim-ic makes digital delay lines, but.... they cost some bucks ~10us  
for 7.22 @1k
they normally run at 10's of nS.

-- or --

probably your best bet.....

Get out a 555 timer cook book and read up on oneshot timers.
555s are cheap, and plentiful.

hardkrash

On Feb 23, 2009, at 11:05 AM, Tamas Szabo wrote:

> Hello All,
>
> Sorry, I know this question is a bit silly (and maybe off-topic).
>
> I have been designed an IrDA interface. It works correctly if I  
> connect
> for example 2 minicom terminal. However I need to communicate with a
> device, which echoes back all characters, but too fast - so the host
> side is not ready to receive it (Well, first I designed with HSDL  
> 3602,
> and it was OK on the breadboard, but HSDL is not available now, thus I
> redesigned with TFDU 4300, and it has somewhat different  
> characteristic).
>
> If I would be able to delay the echo with a few tens of usecs, It  
> would
> be a workaround.
>
> I was thinking of solutions, like a uC with UART, some big fifo, etc.
> However if any of you have simpler solution, could you please share  
> with me?
>
> Thank you, in advance,
>
> /sza2
>
>
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