Generate trapezoidal waveform for high power amplifier

[imanuelayele]

In this circuit below, how can i creat a pulse with this current or other device?

Pls advise!

Thx!

 

[KrisBlueNZ]

I've given your thread a meaningful title.

Q3 is upside down in your schematic.
Your output is shorted to ground.
Your power supply polarity is wrong backwards.
You should use driver transistors to provide high current base drive to your output transistors.
If you want to avoid "crossover distortion" there should be an offset voltage between the bases.

You can generate a square wave with an oscillator such as a 555.
If you need controlled and straight sides, you can use current sources and a capacitor.

Tell us IN DETAIL about the WHOLE project then we may be able to suggest something.

 

[Arouse1973]

Good one Kris. Yeah what slew do they want, adjustable mark and space also?
Adam

 

[BobK]

Is this supposed to be the output stage of a class D amp, or AB?

Bob

 

[Arouse1973]

Is this supposed to be the output stage of a class D amp, or AB?

Bob

I am not sure Bob but I think this just might be his attempt at something?
Adam

 

[davenn]

and the MJ2955 is the preferred (PNP) complimentary transistor for the NPN 2N3055