quick question

[Beszedes Arpad]

Hi!

I don't remember from where I have downloaded this file, but maybe it'll
help...

Regards, Arpad.


Plinio Andres Barraza wrote:
> 
> Hi all
> 
>   Can anyone refer me to where I can find info on matching transistors?
> I know I need to match impedances to make my circuits more efficient, but
> when matching two transistors that work together (like in a current
> mirror for example), am I looking for them to have the same gain?
>   Also, I now can borrow a tester which tells me what the gain of a
> transistor is, but what can I do to test transistors the low budget way,
> when I don't have access to such test equipment.
> 
> For those that are curious, this is what i am planning:
> 
> (keep in mind that I am very ignorant about electronics)
> 
> I want to make an powerful amplifyer, possibly followed by a step up
> transformer.  The purpose of the device is to use this high voltage signal
> along with coils to drive physical objects as well as old monitor cathode
> raytubes.  Could be an interesting module, (.. I imagine inducing signal
> into a cymbal or sequencing onto acoustic [percussion or string]
> instruments...or even playing with the resonant frequencies of real
> objects...)
> 
> I promise I will not electrocute myself with the +/- 25k volts
> running to the anode of some of these CRT's.
> 
> any comments welcome private or public
> 
> Plinio

-- 
***********************************************
*  Arpad Beszedes                             *
*                                             *
*  Research Group on Artificial Intelligence  *
*  Hungarian Academy of Sciences              *
*  Attila Jozsef University, Szeged, Hungary  *
*  e-mail: beszedes at cc.u-szeged.hu            *
*  tel.: (+36) 62/45-41-45                    *
***********************************************
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