Date   : Mon, 12 Apr 2010 19:31:47 +0100
From   : afra@... (Phill Harvey-Smith)
Subject: Testing homemade Master battery pack

Mike Tomlinson wrote:
> In article <4BBF9EAA.7040204@...>, Phill Harvey-Smith
> <afra@...> writes
> 
>> I always wondered why they used a 1N4005 and not the more common 1N4001, 
>> the only difference that I can see is that the 1N4005 has a peak reverse 
>> voltage of 600V as opposed to 50V on the 4001, sureley that's not needed ?
> 
> It's not.  It's just what Acorn could get hold of cheap at the time.
> Any old silicon diode would do.

Ahh I figured as much, just wondered if there was some obscure reason 
they chose that one.

Then again the 80s microcomputer industry was littered with things like 
that, I know the Dragon 32 board underwent several re-designs depending 
on what RAM chips Dragon Data could get cheap at the time. Then there's 
the half good 64K ram chips in the 48K spectrum....

Cheers.

Phill.

-- 
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !

"You can twist perceptions, but reality won't budge" -- Rush.