TSSA - The Simplest Symmetrical Amplifier

[sonnya]

Originally Posted by Lazy Cat

True, so many good sounding systems on a display, Dan's Momentum impressed me the most (among others).

Sonnya, perfectly laid parts on double layer PCB, will look today and report. Have a nice day.

Did you have time to look it over?

I would very much like to hit the "start" button.

[Lazy Cat]

Just doing it now, what are you, mind reader hehe

[Idefixes]

So i was waiting the new printer...to transfert eagle production on special laser transparent paper. I have bought the H2O2 that lefted. Next step is UV treatment, board revelating, and than eatching.

Marc

[Idefixes]

I achieve with LC help to take mesure of my IRF 610/9610 stock. I apply LC procedure desbribed forward in topic

[Lazy Cat]

Originally Posted by Idefixes

So i was waiting the new printer...to transfert eagle production on special laser transparent paper. I have bought the H2O2 that lefted. Next step is UV treatment, board revelating, and than eatching.

Marc

Real DIY project, single layer PCB, five jumpers only, printer transfer method, unconventional sch, goood.

BTW, nice looking PCB you have there.

[Lazy Cat]

Originally Posted by Idefixes

I achieve with LC help to take mesure of my IRF 610/9610 stock. I apply LC procedure desbribed forward in topic

Potentiometers on charts hehe, you see how nicely they revealed themselves Sherlock.

Now you can pair them as much as you like, same n-channels, same p-channels, complementary pairs as well, anything you want. For actual BIGBTs take all four IRFs with same resistance (IRF610 - 1,9, IRF9610 - 1,12).

There's even Vgs very similar at both cahnnels, you really can pair them perfectly from the stock you have.

Two words more about forthcoming single BIGBT: 360 Wmax, 30 Amax, 230 Vceo , enormous and linear transconductance - quite a beast.

[Lazy Cat]

Originally Posted by sonnya

Did you have time to look it over?

I would very much like to hit the "start" button.

Ufff PCB looks simpler than it is, double layered and SMT, gives me a headache when inspected but I can proudly say: Sonnya you did it !

Now you can push START button.

[Idefixes]

Originally Posted by Lazy Cat

Potentiometers on charts hehe, you see how nicely they revealed themselves Sherlock.

Now you can pair them as much as you like, same n-channels, same p-channels, complementary pairs as well, anything you want. For actual BIGBTs take all four IRFs with same resistance.

There's even Vgs very similar at both cahnnels, you really can pair them perfectly from the stock you have.

Ok, so no need to take more at mouser yet. I plane to use pair irf610-8//9610-5 and IRF610-9//9610-1.

Originally Posted by Lazy Cat

Two words more about forthcoming single BIGBT: 360 Wmax, 30 Amax, 230 Vceo , enormous and linear transconductance - quite a beast.

Marvelous number. What dou you think of NJW1302/3281 for another BIGBT module since in datasheet they indicate

NPN/PNP Gain Matching within 10% from 50 mA to 5 A

???

regards Marc

[Lazy Cat]

Originally Posted by Idefixes

Ok, so no need to take more at mouser yet. I plane to use pair irf610-8//9610-5 and IRF610-9//9610-1.

I would rather pair IRF610-1 with IRF9610-1 and IRF610-9 with IRF9610-12

In this way all four BIGBTS will be the same.

[Idefixes]

Originally Posted by Lazy Cat

I would rather pair IRF610-1 with IRF9610-1 and IRF610-9 with IRF9610-12

In this way all four BIGBTS will be the same.

Yes your are 100% rigth, i don't see 9610-12...

Marc