MOTM

At 8:13 PM +0100 09/16/01, sikorsky wrote:

>> 2 - Make your own simple circuit where...
>
>noted, i tried one circuit i found on the web, and after the third attempt
>gave up - i've also 'designed' something using a pair of 555s but i really
>don't think it'll work

What exactly are you trying to do??  The term "gate delay" seems a bit
vague, and I apologize if I'm unaware of an established definition.

I'm not like Dr. 555 or anything, in fact I can't even seem to buy a copy
of that "555 Cookbook", but I've built a number of 555 and discrete digital
circuits over the years (using gates and flip-flops) so I might have
already "designed" the circuit you want.  If not, I'd be willing to take a
crack at it.  The key word in that sentence is "crack", as Paul will scold
me for using the classic 555 that draws 20 Amps of current :)

>> 3 - Or one could add the threshold pot and make the circuit more of
>> a full blown comparator and one of the functions is gate delay.
>
>i think maybe a 'pot pourri' panel would be useful - so long as it were
>>tied into a set of simple schematics - something like 2U with some logic,
>inverters, schmitt triggers, comparators etc - who knows..?

I think modules like that will be useful as well, as part of a series that
contains sequencers, pulse dividers, analogue and digital shift registers,
logic functions, etc.

Rather than trying to roll various unrelated functions into one module, I
imagine at least two separate 1U modules:  a knobbed module with variable
threshold settings containing a schmitt trigger/comparator for squaring-up
signals, ringing filters, generating gates, etc.; and a knobless digital
module for building little combinational networks containing various logic
gates (OR, AND, XOR, INV, etc.).  I think that would be much more flexible.

Someone suggested a module based on the AD534 that can multiply, divide,
square, root, etc.  Such a module might be a good addition to the 500
series for the man who has everything.