MAKO is an hyper power amplifier, able, alike the Mako shark to eat

[ostripper]

Originally Posted by AKSA

You look much slimmer, Carlos, far more healthy! Congratulations......

Marry in haste, repent at leisure..... it's a great world, huh?

The sliding power supply is an excellent idea, OS is 100% right. And since you are moving the collector voltage up and down to improve SOAR, you are also reducing output device distortion because Early effect is greatly reduced.

But you still lose efficiency in the up/down converters as they must drop voltage, making it about the same efficiency as a stock AB amp.

Hugh

I might be in over my head, but the down converters look like opto-controlled self- oscillating switchmode (not linear). Efficiency might be much higher.

OS

[AKSA]

Ah, didn't see that. You are right, OS

Hugh

[ostripper]

Originally Posted by AKSA

Ah, didn't see that. You are right, OS

Hugh

Actually we are both right, as the efficiency would vary depending on how low or high the rails are. A simple bootstrap amp's bias will dive into class A at the low end of the convertor (+ -20v - for example). Some would confuse this as a class D/AB hybrid , but the amp itself is always somewhere between A and B.

OS

[c2cthomas]

Originally Posted by destroyer X

but i have other 40 kilos to loose...a long way to go..

Carlos

I lost 50 kilos when the 1st wife left!!!

Hello Brother Carlos - It has been too long sense talking with you - I send you good thoughts - and as always wish you the best!!!

[destroyer X]

i felt so sad and depressed that i was eating alike a crazy...trying to kill myself eating.

I know Thomas, i do receive your "energies" and your image and name appear in my mind..... i know that Thomas..very well..and sending you too.

Well boys (i am 60 so i can call you this way), don't you think this is a hell complication when we can increase transistors quantity...don't you think this should be a very exagerated solution to save some power transistors?

Part's count is huge... another big board, auxiliary to the supply...all that stuff to increase efficiency....... this is too much complication to my old brain.

regards,

Carlos

[destroyer X]

and enjoy Symphonic from Australia.... i am plugged into youtube.

you should do the same if you can.

Speaker crossover is my design and uses 7 bands

regards,

Carlos

[MJL21193]

Originally Posted by destroyer X

don't you think this is a hell complication when we can increase transistors quantity...don't you think this should be a very exagerated solution to save some power transistors?

I do.

[destroyer X]

Too much exageration in my point of view.... better to increase transistors and not to produce all that whale board.

regards,

Carlos

[AutoClassA]

Can we see the schematic of the MAKO ?

[destroyer X]

I hope, in the future i will be free to do that.

Was inspired in the Precision I...wich schematic was already attached.

regards,

Carlos