Hello,
Does somebody have circuit description ?
How about Short Circuit - Over Current Protection and turn On Delay / Fast off for speakers in this Design ? otherwise I can use relay for turn On Delay / Fast off for speakers
1250W without Short Circuit and Over Current Protection in catastrophic user failure makes a good firework.
does this design working with heavy 2 OHM loads too?
Im interested to make DIY Stereo/2 Channel PCB boards 220 x 80 mm from this Class D Design
including Balanced XLR IN and Triac Crowbar DC Protection for HI-FI or PA
Any idea or comments are welcome
regards
Does somebody have circuit description ?
How about Short Circuit - Over Current Protection and turn On Delay / Fast off for speakers in this Design ? otherwise I can use relay for turn On Delay / Fast off for speakers
1250W without Short Circuit and Over Current Protection in catastrophic user failure makes a good firework.
does this design working with heavy 2 OHM loads too?
Im interested to make DIY Stereo/2 Channel PCB boards 220 x 80 mm from this Class D Design
including Balanced XLR IN and Triac Crowbar DC Protection for HI-FI or PA
Any idea or comments are welcome
regards
Last edited:
Really?
I read on NXP website that UCD use for commercial use was ok as long as NXP power MOSFET were used.
From what I see here, there are still some commercial use with MOSFET from competition?
Can you please provide a link to the NXP site with this info?
I think it was in this way as you said while Bruno had worked for Philips. Now he is at Hypex and owns UCD patent exclusively, as I heard...
I can't find it right now. I read that about one year ago.
On UM10155, it is still written that patent is owned by philips, no update since 2006.
On UM10155, it is still written that patent is owned by philips, no update since 2006.
I have try several type of class D amp with IRFP250 fets. But I have got the same problems. It is hot so quikly. So what about this one?
Are you serious? Did you bother reading any of the other posts in this thread?
hello, i have an 150va 2x60v transf. is it any good for an class d amp. or should throw way. sorry for the question.
hello, i have an 150va 2x60v transf. is it any good for an class d amp. or should throw way. sorry for the question.
hi diyers
greetings can someone please translate this so i can register
in this diy forumest de suficienciaHalle RT en Ω, RT = 2.7kΩ || 4050Ω (tips: || = Paralelo, Ingrese solo el valo
want to read pages of this amplifier in this diy forum tried to register many
times but cannot understand this part hoping some one can help out
thanking you
andrew lebon
greetings can someone please translate this so i can register
in this diy forumest de suficienciaHalle RT en Ω, RT = 2.7kΩ || 4050Ω (tips: || = Paralelo, Ingrese solo el valo
want to read pages of this amplifier in this diy forum tried to register many
times but cannot understand this part hoping some one can help out
thanking you
andrew lebon
You have to enter the parallel resistance for the answer.
For instance, the answer to 2.7kΩ || 4050Ω is 1620.
For instance, the answer to 2.7kΩ || 4050Ω is 1620.
Does somebody idea for Short Circuit - Over Current Protection to design ?
cant find anything
To use this circuit without protection is very dangerous
cant find anything
To use this circuit without protection is very dangerous
Hi:
On this pdf you can see an standard overcurrent protect implementation using a current sense resistor on the mosfet drain(R37 for channel1,R38 for channel 2). You must recalculate the value for your design.
http://www.irf.com/technical-info/refdesigns/iraudamp1.pdf
On this pdf you can see an standard overcurrent protect implementation using a current sense resistor on the mosfet drain(R37 for channel1,R38 for channel 2). You must recalculate the value for your design.
http://www.irf.com/technical-info/refdesigns/iraudamp1.pdf
hi eduardo tagle
greetings sorry for all the confusion of posting your schematic
is it possible to make this lovely amplifier with schematic posted in full file
1 half watt 1% resistors very difficult to obtain can correct values of normal 5%
resitors be used same is case for 330pf mica have 1000volt ceramic 330pf
will amp work
2 is pcb single or double sided can understand bottom layer of pcb but cannot
understand in file is small ic pads component pads what r they for
hoping you can help to make this amplifier possible
thanking you
andrew lebon
greetings sorry for all the confusion of posting your schematic
is it possible to make this lovely amplifier with schematic posted in full file
1 half watt 1% resistors very difficult to obtain can correct values of normal 5%
resitors be used same is case for 330pf mica have 1000volt ceramic 330pf
will amp work
2 is pcb single or double sided can understand bottom layer of pcb but cannot
understand in file is small ic pads component pads what r they for
hoping you can help to make this amplifier possible
thanking you
andrew lebon
Nice amplifier i can tell from the simplicity in the design as well as the component selection.
Its about time someone posted a truly simple DIY self osc amplifier the output power is just what i was looking for my home sub-woofer 🙂
honestly i don't have the equipment or the time to gain knowledge designing amplifiers in this category, simulations was the the further est vie came but intuitive non the less 🙂
Current limiting is still missing but a good exercise on behave of the person adapting the amplifier for hes or hers application, seriously how lazy can one get unless you ripping someone else work and selling it which i feel is already taking place judging from the silly questions.
i think i can build a new looking smd version of this with even smaller components and a nice pcb for my personal usage 🙂 😎
A big thank you to the designer! good principle keeping it simple 😉
Its about time someone posted a truly simple DIY self osc amplifier the output power is just what i was looking for my home sub-woofer 🙂
honestly i don't have the equipment or the time to gain knowledge designing amplifiers in this category, simulations was the the further est vie came but intuitive non the less 🙂
Current limiting is still missing but a good exercise on behave of the person adapting the amplifier for hes or hers application, seriously how lazy can one get unless you ripping someone else work and selling it which i feel is already taking place judging from the silly questions.
i think i can build a new looking smd version of this with even smaller components and a nice pcb for my personal usage 🙂 😎
A big thank you to the designer! good principle keeping it simple 😉
Hello Reactance,
I want to design a SMD version too...
I will post it on this thread as soon as it's done.
please post yours when is donne because I want to see how you aproach this issue.
Class D pcb layouts give me headakes and I want to study others people work to see where I am goin wrong.
Best regards,
Savu Silviu