Hi All!
You can look at my DIY projects on my website http://www.classd.fromru.com
2 UcD amps (pics, circuits+pcb) 😉 :
http://www.classd.fromru.com/circuits.html
PS. sorry for my bad english
You can look at my DIY projects on my website http://www.classd.fromru.com
2 UcD amps (pics, circuits+pcb) 😉 :
http://www.classd.fromru.com/circuits.html
PS. sorry for my bad english
cool
I wish it WAS in english.... or is my browser bad?
😀 😀 😀 😀 😀
and add to that , SMTs... man!! I congratulate you.... 🙂
I wish it WAS in english.... or is my browser bad?
😀 😀 😀 😀 😀
and add to that , SMTs... man!! I congratulate you.... 🙂
Hi.
Thank you for the nice pictures. Inspiring!
Some word about the construction-details would surely be good to have.
Your SMPS seems to be unregulated and with a toroid-transformer. Whats the regulation on the secondary-side and how do you maintain proper isolation between primary and secondary windings?
Regards TroelsM
Thank you for the nice pictures. Inspiring!
Some word about the construction-details would surely be good to have.
Your SMPS seems to be unregulated and with a toroid-transformer. Whats the regulation on the secondary-side and how do you maintain proper isolation between primary and secondary windings?
Regards TroelsM
smps
TroelsM,
i dont like stabilized SMPS. This SMPS without feedback.
I calculated turns in the special soft for transformer.
Primary winding isolated with insulating tape.
TroelsM,
i dont like stabilized SMPS. This SMPS without feedback.
I calculated turns in the special soft for transformer.
Primary winding isolated with insulating tape.
Hi.
How much does the secondary-voltage go down when the supply is heavy loaded?
I would guess that its drops quite a lot as there's no regulation and probably a pretty poor coupling between prim and secondary-windings.
Maybe that doesn't matter much with classD?
Your page would be top-notch if you added a bit of English text and some measurements of SMPS and classD.
Regards TroelsM
How much does the secondary-voltage go down when the supply is heavy loaded?
I would guess that its drops quite a lot as there's no regulation and probably a pretty poor coupling between prim and secondary-windings.
Maybe that doesn't matter much with classD?
Your page would be top-notch if you added a bit of English text and some measurements of SMPS and classD.
Regards TroelsM
smps
TroelsM,
This smps was developed for tda8924 some months ago.
Without loading a voltage output about +- 25-26v on the maximal loudness nearby +--22-24.
You can read articles with some on-line translator. 😉
Measurements I shall do later, after assembly of the new version pcb of UcD.
TroelsM,
This smps was developed for tda8924 some months ago.
Without loading a voltage output about +- 25-26v on the maximal loudness nearby +--22-24.
You can read articles with some on-line translator. 😉
Measurements I shall do later, after assembly of the new version pcb of UcD.
How good are these, if they're like UCD they should be well usable for full range. What class D amps are only good enough for subwoofers? Or is that bull....
The designs look very nice and simple, where do you start with something like this.....
Good work man! Keep it up! 😉 😉 😉
The designs look very nice and simple, where do you start with something like this.....
Good work man! Keep it up! 😉 😉 😉
classd_fromru
Seems that the main difference between 1.2 and 2.2 is the over current circuit ... is that correct? (could be layout as well🙂)
Have you had any problems in using single layer PCBs?
Have you had any difficulties in getting it to start oscillating? or start up at all (getting the upper driver to function)?
I'm working on a circuit using the same kind of drivers, but I can't really get it to work
Seems that the main difference between 1.2 and 2.2 is the over current circuit ... is that correct? (could be layout as well🙂)
Have you had any problems in using single layer PCBs?
Have you had any difficulties in getting it to start oscillating? or start up at all (getting the upper driver to function)?
I'm working on a circuit using the same kind of drivers, but I can't really get it to work
Baldin,
In version 2 protection and a delay on start of is added. The oscillating is started in 1 second after the supply voltage is on. In version 2 oscillating is started always from the first even without a signal on an input.
At short circuit on an output, the comparator is set off and in 1 second is started again.
On single-side pcb all works very well. Soon I am going to order 2-side pcb.
v-bro,
Yes UcD sound is great in full-range! I think for the subwoofers UcD is best too. 😎
In version 2 protection and a delay on start of is added. The oscillating is started in 1 second after the supply voltage is on. In version 2 oscillating is started always from the first even without a signal on an input.
At short circuit on an output, the comparator is set off and in 1 second is started again.
On single-side pcb all works very well. Soon I am going to order 2-side pcb.
v-bro,
Yes UcD sound is great in full-range! I think for the subwoofers UcD is best too. 😎
classd_fromru,
Hello.... im very much interested with the smps.... anyway you could translate them in english??
also , can that circuit be upgraded to a HIGHER current (like 4A) @ +/-45VDC???
btw, what software you use for layout? (*.lay extension)
Cheers,
raff
Hello.... im very much interested with the smps.... anyway you could translate them in english??
also , can that circuit be upgraded to a HIGHER current (like 4A) @ +/-45VDC???
btw, what software you use for layout? (*.lay extension)
Cheers,
raff
smps
Hi RX5,
I recommend for high power (above 300-400w) use the most complex Smps with soft start and protection. But I know, that some people used IR2153 with above 500W amps 😀
Now I use simply software for PCB design: Sprint Layout 4, but I wont soon using most professional software such as Diptrace or P-Cad.
English version of my site:
http://google.com/translate?u=http://classd.fromru.com&langpair=ru|en&hl=en&ie=UTF8
Learn Russian language 😀
Hi RX5,
I recommend for high power (above 300-400w) use the most complex Smps with soft start and protection. But I know, that some people used IR2153 with above 500W amps
😀Now I use simply software for PCB design: Sprint Layout 4, but I wont soon using most professional software such as Diptrace or P-Cad.
English version of my site:
http://google.com/translate?u=http://classd.fromru.com&langpair=ru|en&hl=en&ie=UTF8
Learn Russian language 😀
nice amps 🙂
for pcb : try kicad , its free and easy to understand !
http://www.lis.inpg.fr/realise_au_lis/kicad/
for pcb : try kicad , its free and easy to understand !
http://www.lis.inpg.fr/realise_au_lis/kicad/
my new UcD module
Hi all!
My new mini 20w version of UcD module 😀
Circuit here:
http://www.classd.fromru.com/circuits.html
🙂
Hi all!
My new mini 20w version of UcD module 😀
An externally hosted image should be here but it was not working when we last tested it.
Circuit here:
http://www.classd.fromru.com/circuits.html
🙂
very cool 😀
lower voltage supply + smaller(size) mosfet/s
nice that you dont have problems acessing SMT components...
lower voltage supply + smaller(size) mosfet/s
nice that you dont have problems acessing SMT components...
RX5,
Thanks 🙂
The pcb has turned out very beautiful. 🙂
Because a supply voltage is low, stabilizers for opamp and drivers are not become necessary.
I like to use SMD components because that it is not necessary to drill apertures 😀 . And the cost price turns out noticeably below.
😉
Thanks 🙂
The pcb has turned out very beautiful. 🙂
Because a supply voltage is low, stabilizers for opamp and drivers are not become necessary.
I like to use SMD components because that it is not necessary to drill apertures 😀 . And the cost price turns out noticeably below.
😉
Hello,
uhmm I could have done so myself,. if it (SMT) where locally available... 😀 where do you source your parts? by mail or is it locally available?
uhmm I could have done so myself,. if it (SMT) where locally available... 😀 where do you source your parts? by mail or is it locally available?
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