Hi,
Tom Jennings <tomj_at_wps.com> said:
> You're right, and while diodes would allow you to conjure up arbitrarily
> complex terms of even relay logic, it's also true that solid state
> diodes didn't exist back when relay calculators were The Latest Thing,
> if these questions are leading to 'why didn't they...'
>
> Though there's always selenium rectifiers, ugh. Besides being toxic,
> huge, hot, they are slow and terrible forward/reverse ratio, though
> likely faster than a relay. They've been around for a long time, I
> wonder how good they' be as a relay signal diode (shudder).
There were germanium point-contact diodes some of which could handle over
50mA and over 100V so would be ok with lower power relays.
--
Cheers,
Stan Barr stanb_at_dial.pipex.com
The future was never like this!
Received on Tue Sep 28 2004 - 03:02:30 BST