[Ktechlab-devel] Bug of the week

[Alan Grimes]

P Zoltan wrote:
>    Hello people,
> 
> 
>   I've found a very annoying bug, yet I don't really have time to  
> investigate it deeply. Here is the entry in the bugtracker:  
> https://sourceforge.net/tracker2/?func=detail&aid=2687692&group_id=143459&atid=755588  
> . It's about connecting logic outputs together using resistors. Instead of  
> forming an algebric mean between the voltages, se simulator makes the  
> voltage on logical output aproximately equal.

That's not a bug, it's a feature. ;)

Open the settings menu, select "configure ktechlab", then select "logic"
and finally set the "low output impedance" to whatever you think it
should be. ;)

If you think it needs to be redesigned, by all means propose an
alternate design... But the code is working exactly as designed (for a
change). =P

What I've been mulling over is this "EMISSION COEFFICIENT" crap in diode
settings...

It is currently set to disallow settings below unity, (which prevents
certain types of diodes from being implemented.)

There seem to be four types of diodes out there:

PN junction diodes.
MS junction diodes. (Schottky)
Germanium diodes.
Selenium diodes.

There needs to be a wizard that can work the gawdawful equations for you
for your selected diode type and give you some user friendly parameters
that will let you tune the variable for your specific part.

The equations for this variable really are gawdawful, I have them for PN
junction diodes and MS diodes, but it'll be a pain to copy them into
e-mail and explain each of the dozen or so variables. =P


-- 
New president: Here we go again...
Chemistry.com: A total rip-off.
Powers are not rights.