Symetric voltage v2

133

02:10:40

published 12 years ago

hurz

12 years ago

Idee is good but perfornance is not. Its to weak. Not even 1kohm load. Lower 47k to 1k and 2.7k to 1 or 0... power bjt are needed for more...

FojtDavid

12 years ago

I can see only one problem and thats load from 0-2000 Ohms, higher are perfectly working for me :)

needforusername

12 years ago

I'm tested this on breadboard, and got good results, but I have big differences between +4,5V and -4,5V, I think it's because of transistors paremeters, they aren't same for pnp and npn. This program doesn't have a library for real components, they are ideal..

hurz

12 years ago

With 2.7k collector resistos, it can only drive a few 100uA. BD139 are suppose to drive much more (about 1A) drecrease the resistor values as i already told you and its working fine.

needforusername

12 years ago

My elko caps was wrong polarised, now it's good, about 0,01V-0,02V differences. I'm replaced resistor 47k and put 1k and got current about 4,7mA, voltage ps: 9V .

hurz

12 years ago

And whats up with the most importante 2.7k which limit the current very drastic. Just remove them!

needforusername

12 years ago

Is this good now? I'm replaced 1k and put 16R, 2k7 is removed, current is about 800mA

hurz

12 years ago

No tengo salu

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