drzhuang said:
What dat???
First Mueta???
MUETAAAA!!!!!!!!!!!!!
No really, tell us about it would ya? Schematic?
THe module plug into main board is named DR500FB. The schematic is in secrecy. Demo of DR500FB will be delivered.
Let's see. It's not class-D, not class-AD, not class-BD, as well as all other classes as tabulated by Karsten Nielsen.
Class-D is dead. Long live class-Zhuang!
Class-D is dead. Long live class-Zhuang!
koolkid731 said:
Heh.... I think he just meant to say it differs from the as seen on the data sheet hip4080. Not so sure it uses that at all either.
From google translator:
Overview :
DR500 Providing high-quality D Type power amplifier required preparation and control functions, external hard disk power MOSFET Configuration flexibility to meet 500W The different power output.
Features :
Escape PWM Preparation, frequency 250kHz
In response to the bands
Single power supply, wide voltage range of work
3A Driven currents
THD+N �F 0.2%
Efficiencies : 92%@250W �C 8 @ Island
88%@500W �C 4 @ Island
Export direct current spaces -
1 4 feet separate plug-ins module
Guozaibaohu
Applications :
Active box amplifier
Vehicle-mounted power amplifier
Bass amplifier
Broadcasting system
�@
Quotations :
1000PCS at : 32 yuan RMB
Reference design model unit : 210 Yuan RMB
http://translate.google.com/transla...&hl=en&ie=UTF-8&oe=UTF-8&prev=/language_tools
drzhuang said:
Sooo you're saying it's a class Z??
Why not tell us what makes class Z unique? We don't need ze schematic.
At least power stage zchematic 🙂 looks plain ordinary.classd4sure said:
Now, if you dont want to give us zchematics why this post is placed on here? There are different sections for commercial advertisements with secret zchematics and diy-class-d in here 😉
classd4sure said:
Class D is Class D. There are too many so called "class--" to define switch mode amplifier, Class I, Class T, Class J, Class S, Class Z. Little difference make new name. If you believe they are different from class d essentially, you can call my product anything at will.
drzhuang said:
Believe me Sir I'm very much in agreement with you there. I consider a switching mode amp =cass d! End of story.
The class Z was just a bit of a joke, considering you're disclosed such little information about it, other than 500W class d of course.
BTW, class S was the original class D, may it rest in peace.
Anyway it's very difficult to decipher the information on your website, especially through google translator. Given the schematics as mjjz stated the output stage certainly appears conventional, so are you then able to tell us what makes your amplifier unique? You understand this is a DIY audio forum and not so much for marketting.. I trust you're here to share?
Is it the daughter boards you're selling or the complete module, will it be a DIY Kit, or geared towards mass production, what form of modulation do they use, and feedback?
Thanks,
Chris
We are all curious to see the schematics, especially if there is any new and interesting solution.
However publishing a sch is a bit of a risk. Not so much because of the danger of somebody copying the design, and mass producing it. This is not a very high risk, because, believe me, the producers who are interested in Class D technology, they have it already.
The risk is more that people here will breadboard the schematic to try it out how it sounds. And with a DIY PCB or breadboard, you are bound to end up with a poor or useless result. So the product may get a bad reputation based on it's breadboard performance, even if it has great performance on the producer's 4 layer PCB.
So i would be understanding if dr Zhuang is reluctant to post his schematics. However a nice explanation about what makes his amp different than others, would be very interesting 🙂
How much is this in US$ ??
However publishing a sch is a bit of a risk. Not so much because of the danger of somebody copying the design, and mass producing it. This is not a very high risk, because, believe me, the producers who are interested in Class D technology, they have it already.
The risk is more that people here will breadboard the schematic to try it out how it sounds. And with a DIY PCB or breadboard, you are bound to end up with a poor or useless result. So the product may get a bad reputation based on it's breadboard performance, even if it has great performance on the producer's 4 layer PCB.
So i would be understanding if dr Zhuang is reluctant to post his schematics. However a nice explanation about what makes his amp different than others, would be very interesting 🙂
How much is this in US$ ??
Anyone breadbording a class d amp expecting the ultimate noise floor ought not to be breadboarding a class d amp, yet. 😉
sychen0301 said:To Chris,
You are such a kind and nice guy !
Now you've gone and turned this thread into a real joke 😀
Thanks
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