UcD like topology amp.

[deniskin]

Hi, deniskin! My congratulations.
Shared amp version is just simple example of UcD principle.

ps: there is no need in ad825, you can successfully use tl071 or similar cheap opamp. [/B]

Sure, this prototype need protection circuit

ad825... I am have this IC in sufficient amount, no problem to use it🙂

When you share a bridge amp? It designed to use a balanced, or unbalanced input?

 

[mannycc]

Hi Bender,
Can you post the schema again, just realized i overlooked and missed your posting. 🙂
Advance thanks,
mannycc

 

[Bender.ru]

Hi, mannycc!

Here is all docs: http://www.diyaudio.com/forums/showthread.php?postid=1483633#post1483633 .

Hi, deniskin!

can't say anything about bridge version, proto works well. Full balanced schematic applied.
May be later i'll finish this project.

ps: in fact, i didn't need such power levels🙂

 

[mannycc]

Thanks Bender, but that's the link I exactly mean because it's available for a couple of days only. I tried to open the your link and what appears is this; http://ifolder.ru/6153907 and it's end of the tunnel for me 🙂

thanks,
mannycc

 

[wimdehaan]

for sale: new IRFI4212H-117P Mosfets

For those who are interested. I do have 40 new never used still in packiging IRFI4212H-117P mosfets. You can reply this message on this forum and i will answer. Will shipped from Holland and price is 80 euros, exlcuding shipping. I will only send as registrate mail. Wim
I have to many projects and just can't finish them all, my time is limited at the tiem and coming time.

 

[AmplifiersMan]

hi all,

I assembled Bender.ru's Cakeamp V1, works well and nice sound!! 😀 but now i need more power (Too Much Power? Never! 😎 )... I wonder, did anybody try to get more power from that module, or anybody try to bridgemode (without Bender.ru) and can share schematics?

p.s. Bender.ru, how much power you get in bridgemode? Maybe you can share bridgemode prototype schematics?

Thanks for any Help!

 

[luka]

Cool nice to hear that, post pics

 

[Kay]

Hello AmplifiersMan,

what choke you are using?
Epcos N87?

Can you give me the order code for the Choke,
maybe from farnell.com ?

 

[theAnonymous1]

Is this it? (former and clip at the bottom of the page)

http://uk.farnell.com/epcos/b65813jr87/ferrite-core-half-rm10-n87/dp/1422723?_requestid=167893

 

[theAnonymous1]

Attached is a pdf for making the PCB with the toner transfer method. I hope Bender.ru doesn't mind.

 

[luka]

sweet, look great, thanks
can you tell how to align this to sides?

 

[theAnonymous1]

can you tell how to align this to sides?

Very carefully. 😱

My method is probably not the best. I etch only one side first by using vinyl tape on the other side to protect it from the etchant.

After etching I drill a few of the pad holes in the PCB and then drill the same holes in the photo paper for the other side. I align the holes by holding it up to a light and then carefully hold it in place while I iron it.

 

[luka]

all I would do diffrently is, after one side, drille holes and align other side and then go eatching

 

[Bender.ru]

Hi, guys!

AmplifiersMan, i didn't test H-bridge amp at full rate.
it'easy to obtain 400..500W@4Ohm (half-bridge topology), using to-220 cased fets. 60-65V per rail, 150..200V Vds rated fets.


like this, more power, more distortion 😀 :

 

[AmplifiersMan]

hi all,

luka: pics coming soon !

Kay: i used Epcos RM10 N87 choke, and the order page posted by theAnonymous1!

Bernder.ru: i need more than 400..500W @ 4Ohm (about 800wrms -1kWrms @ 8Ohm with reserve), for my twins (it's my another not finished project 🙂 ).

An externally hosted image should be here but it was not working when we last tested it.

p.s. I have the bad neighbours

Can anyone help me with bridging Cakeamp V1?
Thanks for any Help!

 

[Kay]

i used Epcos RM10 N87 choke

Thanks,
excuse me my stupid question, but I get 1mm
Airgap with this part from farnell?

I'm confused. The datasheet shows 0,6mm
Airgap.

 

[luka]

This could be for half core, times two for whole set...

 

[theAnonymous1]

With the advent of the IRS2092, is this IRS20955 amp even worth building?

The price isn't much different between the two and the layout for the IRS2092 is much more simple.

Or am I overlooking the fact this one is self-oscillating?

 

[Bender.ru]

Cakeamp v3.

DC protect, OVP, UVP, improved PCB topology.

Sounds quite pretty 🙂

 

[luka]

😱 nice!!