many chances in china for switching mode power supply. you are welcome to the enlish power supply design forum from china. http://www.hqeepower.com. you can disscuss about topologies, magnetics,PCB layout,simulation, MCU,DSP with chinese engineers and vendors, even then make good friends with them.
thanks
i 'd like to the forum of www.diyaudio. com and www.hqeepower.com can be the communicate window between many chinese engineers&vendors and other countries' friends.
i 'd like to the forum of www.diyaudio. com and www.hqeepower.com can be the communicate window between many chinese engineers&vendors and other countries' friends.
- T2A and T2B are not wired properly.
- There is no current limiting at all.
- There is no regulation at all.
- All the peak current drawn by the amplifier has to go through the switching stage.
If you are trying to persuade us into thinking that there is sophisticated high-quality SMPS development going on in China, you have definitely chosen the wrong example circuit.
- There is no current limiting at all.
- There is no regulation at all.
- All the peak current drawn by the amplifier has to go through the switching stage.
If you are trying to persuade us into thinking that there is sophisticated high-quality SMPS development going on in China, you have definitely chosen the wrong example circuit.
no,it's ok and it has been MP for thousands PCS
thans for your studying of this schematic. you are welcome to dicuss about it, but it's a succeed audio power supply ,and it has been MP for several thousands of PCs.By the way T2A,T2Band T2c are right in the circuit. pleas look it carefully and think about it.
thans for your studying of this schematic. you are welcome to dicuss about it, but it's a succeed audio power supply ,and it has been MP for several thousands of PCs.By the way T2A,T2Band T2c are right in the circuit. pleas look it carefully and think about it.
Hi:
This is a plain copy of Chevin Research SMPS used on their line of pro amplifiers.
Uses a self oscillating circuit based on a diac and the gate transformer, the etd49 is designed to form a resonnant tank with the four 100n capacitors. The origin of this circuit is a ballast controller.
There are thousands of Chevin amps sold so if you take care of some not obvious details it works nice.
The circuit is patented.🙂
This is a plain copy of Chevin Research SMPS used on their line of pro amplifiers.
Uses a self oscillating circuit based on a diac and the gate transformer, the etd49 is designed to form a resonnant tank with the four 100n capacitors. The origin of this circuit is a ballast controller.
There are thousands of Chevin amps sold so if you take care of some not obvious details it works nice.
The circuit is patented.🙂
yes, you are right
Hi andy,
you are right, i am quite agree wiht your analysis. By the way, would you please tell me how and where to find the patent? thank you
Hi andy,
you are right, i am quite agree wiht your analysis. By the way, would you please tell me how and where to find the patent? thank you
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