The M2 Output Stage in Class A/B, and maybe a Power WHAMMY?

[chermann]

nothing happened...i personally try to do a little bit at M2 OPS with bootstrap.....but i am not so focused that i see any advantage without other members and it is my time management to choose my interests in build different amps.

kr
chris

 

[chermann]

I'll get it done

which version?
give us something to look at...please
Photos please.

 

[chermann]

last one....realistic 3_ with 31V rail and standard BJT transistors simulated! (not build and tested)
setup is 13,8dB gain, 5,6Vpeak input needed.
maximum swing is 27,414V peak...not bad for a opamp LT 1793 with +/- 15Vrail

View attachment 1385903

kr
chris

hi admin

how is it possible that my LTspice file is changed?
post 458
...with R1, R2 11k it is working
now it is changed to 33k...it is not working.

kr
chris

 

[EUVL]

I'm a "Patrick follower"😁 and love M2OPS with Toshiba.
...So I try M2OPS - Mini....

Speakers or headphones ?
2x is a bit thin for speakers.


Patrick

 

[EUVL]

hi admin ....

Don't expect them to read every post.
Use the report button.


Patrick

 

[chermann]

Speakers or headphones ?
2x is a bit thin for speakers.


Patrick

As i know Harry want to use more TO220 MOSFET but with just 2 it is not looking nice but this pcb can handle a 2nd MOSFET.
i hope it will be a speaker amps 😉

 

[DIYHarry]

Speakers or headphones ?
2x is a bit thin for speakers.


Patrick

Got 10W on 4R and 8R
ACA competitor 😁

 

[EUVL]

You need 3 pairs minimum.
See F5 from Juma.
www.diyaudio.com/community/threads/f5-with-2sk2013-2sj313.168040/


Patrick

 

[DIYHarry]

first.."power amp" is target----

this is clear, it should be better with other designed PCB.....or kind of adapter pcb...

2nd ..headamp

 

[DIYHarry]

this could be a solution for placement 3x TO-220 for new pcb design
shift Cs1,2 up and make place for traces etc.

 

[EUVL]

The 3 legs of a MOSFET does not have to have equal length.


Patrick

 

[DIYHarry]

As excuse I started with one MOSFET to check temperatures..

 

[DIYHarry]

2nd channel in preparation 😋

 

[DIYHarry]

hey,
what do you think is the best distance for To-220 MOSFET (340-400mA each) do handle thermal issues

please have a look to my planned adaptor PCB
thanks Harry

 

[EUVL]

Isn't the middle pin of J2 drain and not gate ?
The gate pin has no current, and the gate stopper should be as close as possible to the gate pin, maybe 0204 MELF ?

The other tracks are high current and you have plenty of space on board to make them thicker, not ?

Patrick

 

[DIYHarry]

Arghh mistake you right again… will change it…
Distance ok?

 

[EUVL]

Yes.

 

[DIYHarry]

have to do single sided ----ok for me--etch on friday.....

 

[EUVL]

The S track is important.
You can make it wider.


Patrick

 

[DIYHarry]

Work in progress 😁