Author Topic: Aliexpress Yunbao pulse skipping Product Guide manual  (Read 990 times)

Offline black.yang

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Aliexpress Yunbao pulse skipping Product Guide manual
« on: February 13, 2019, 06:55:42 PM »
Hello, everyone.
Recently, many friends mail to me to find to Yunbao driver's manual.
Yunbao was originally designed by me and later shared its code with some Chinese form enthusiasts.
So project was fork and made it a cheap driver for hobbyists.
I got a product user manual from the fork designer,
Unfortunately, at this version it is described in Chinese.
Fortunately, the ports in the picture are described in English, you may need to use Google Translate to help you understand more detail.
But it's better than nothing.  ;D
enjoy it!
« Last Edit: February 13, 2019, 07:03:08 PM by black.yang »
My Email:blackhv@foxmail.com

Offline black.yang

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Re: Aliexpress Yunbao pulse skipping Product Guide manual
« Reply #1 on: February 13, 2019, 06:57:22 PM »
https://highvoltageforum.net/index.php?topic=506.0
Answer questions in this post and my email  :P
My Email:blackhv@foxmail.com

Offline Weston

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Re: Aliexpress Yunbao pulse skipping Product Guide manual
« Reply #2 on: February 15, 2019, 07:40:34 AM »
So this controller regulates the average tank current by skipping pulses? Is this for QCW operation?

Do you have any photos or waveforms of the controller in operation? In the past, people have talked about using a pulse skipping controller for QCW coils but the consensus was that loaded Q is too low to effectively regulate the tank current.

I see a crystal oscillator on the board, are you using the FPGA to control the phase lag digitally to get more accurate zero voltage switching?

Offline black.yang

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Re: Aliexpress Yunbao pulse skipping Product Guide manual
« Reply #3 on: February 15, 2019, 08:54:20 AM »
You can see what you want from this page.
https://4hv.org/e107_plugins/forum/forum_viewtopic.php?p=1&id=179388#post-179400
In fact, there is only one GDT in the original design. In order to ensure magnetic balance, when the current over the threshold, a resonance period width will be skipped on the GDT. So it is more suitable to call it "skipping cycle".
A ramp signal input port is reserved on the circuit board. It has been tested that it can be used to operate QCW mode, but the test effect is mediocre and the arc does not look straight.
My Email:blackhv@foxmail.com

Offline maxhi

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Re: Aliexpress Yunbao pulse skipping Product Guide manual
« Reply #4 on: May 09, 2019, 12:45:17 PM »
Hello,
thank you very much for this manual. It is very helpful.
You can get these boards very cheap but I got no information about it.
Does somebody know, what the P4 connectors  (number 9 in the photo) are for?
Thanks

Offline L_Mangold

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Re: Aliexpress Yunbao pulse skipping Product Guide manual
« Reply #5 on: June 07, 2019, 10:38:53 PM »
Bless your heart, I just bought one of these. I’ll try to post results in a few weeks

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Re: Aliexpress Yunbao pulse skipping Product Guide manual
« Reply #5 on: June 07, 2019, 10:38:53 PM »

 


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