[Ktechlab-devel] Working build

[Alan Grimes]

Manuel Naranjo wrote:
> Alan,
>> I have not been able to fix the current branch. =(((
>>
>> And I'm going crazy without a working ktechlab to play with my
>> brainstorms!! =((( I finally figured out how you are SUPPOSED to use
>> transistors for IV conversion... Current mirrors can bite me, they're a
>> fucking awful design!!! 

> Come on! a current mirror is a stupid circuit! Well theoretically 
> speaking is a piece of cake not sure how hard it will be to simulate :S.

Current mirrors work just fine in ktechlab. They basically use the first
transistor as a current sensing diode and use that to control the
second. The problem is that the working voltage swing is on the order of
microvolts so it utterly destroys your dynamic range and makes truly
detailed reproduction impossible. The only way to achieve acceptable
reproduction is to use the transistor in its most natural configuration,
as a current amplifier. The only way to make it usable in that
configuration is to select a part with a reasonable forward current
gain. By running it at fairly high current, the inherent quantum noise
of the device will be nulled out and you should be able to achieve
pretty good amplification. =)


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