Slewmaster - CFA vs. VFA "Rumble"

[vzaichenko]

Hi valery and jwilhelm,


I made a simple grafik with your advice. Is this right now?


Wat is the background of the RC-Filter, is it against HF-oscillation?

Hi Chris,

A somewhat messy drawing but seens to be correct
The function of a simple RC filter at the output of the servo is to suppress possible HF noise coming from the opamp's output. It normally makes subtle difference (if any), but assuming the servo input is connected to the feedback summing point - directly interacting with the signal - it's better to have it thereb

Cheers,
Valery

 

[Ampi]

I'm not expert PCB designer but the Greenamp I made it just like the schematic said and I didn't have any problems at all I got the gerber files if you want it to try out the sounds is really good



they are two options of LED regular ones or SMD LED

Hi vargas,
I'am on the way to design my own layout, more compact, with SMD but also THT. Goal is to put the IPS on a 50mmx100mm Board. The CFA is almost finished. But I get inspired of your board. The next one will be the greanamp. So I'am able to compare VFA/CFA. The IPS is connected to the OPS by a pin header. Similar to Valerys NS board, but my board is fixed in 90° and not parallel. I use KiCad for design - because it is open source. Hope my plan will lead to a functioning Amp .


@Valery: Thanks for the explanation - i like to understand the things and you and jwilhelm are helpful for me.

 

[vargasmongo3435]

awesome Ampi oh with pin headers? cool of course is gonna work just take your time and do re-check over and over what I do I play American 80's music and look at the layout and schematic till I don't see any bugs so far works well for me but I also learn to identified all components on Sprint Layout 6 and that does help a lot ok bro good luck with your project

 

[jaagut]

Thank you!

Here is a gift to everyone. ALL the slewmasters.
.lay for sprint , some of the IPS coppers , prints.
With sprint 6 , spooky V1.2 can be sent to a printer.


Download Sprint-Layout 6.0


One zip is ALL the simulations + models.
The second is ALL the layout files for OPS/IPS.



OS

Thank you so much for these hardworks OS! This is really helpful for me for playing around with various circuits and amp topology.

 

[vargasmongo3435]

Arc Welder II

Arc Welder II share file Sprint Layout 6 format

 

[thimios]

Nice work?
Dimensions please.

 

[vargasmongo3435]

hi Thimios is 125mm x 300mm I just posted here just in case I might lose the file or anything can happen, I spend many hours on this and here is a best save place if I need it is here on diyaudio.com

 

[thimios]

I have upload to JLCPCB BUT no preview no dimensions appeared .

 

[vargasmongo3435]

no papi no that file are not gerbers files is the master file for Sprint Layout 6 you need the gerbers?
anyway here are the gerber files

 

[thimios]

Oh.. Thank you!

 

[vargasmongo3435]

your are welcome

 

[thimios]

Can you share the Green amplifier gerbers?
I will keep those for a future project.

 

[vargasmongo3435]

Greenamp PCB V1.2

sure bro here


Greenamp zip has the gerbers


the LED's you can use regular ones or SMD type

 

[thimios]

Many-many Thanks!

 

[vargasmongo3435]

no problem T good day

 

[Krisfr]

Did you do the OPS also? With dual transformers or single? Excellent work from you as per usual. Outstanding, Thanks

 

[vargasmongo3435]

I think it depends, a single one 800VA or more VA's I do not know any toroidal transformer online store but this one Antek AN-8445 - 800VA 45V Transformer - AnTek Products Corp

 

[Krisfr]

Did you layout a board? Thanks

 

[vargasmongo3435]

the Arc Welder II and Greenamp yes

 

[Krisfr]

Which thread for the green amp pcbs layout. Thanks