Author Topic: Secondary parameters  (Read 160 times)

Offline Alberto

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Secondary parameters
« on: May 16, 2020, 11:08:54 PM »
Hello. I know that I am new and this is the 3th post that I have opened but I think it doesn´t fix in the others. I have also searched but I didn´t find anything in the forum.

I am going to build a new secondary coil to use with a simple slayer exciter because with only 19 volts I have fried a router and in the kitchen, the induction stove started doing strange thinks. Maybe, in the future, I will use with a half bridge, but now I am alittle scared and I preffer low power...

I have read this article http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/secondary-coil/ and I think I have to use 40mm PVC pipe and 0,1mm cooper wire. The number of turns must be between 1460-1830, but the article is focused in DRSSTC and I am not sure if that parameters are OK for a single transistor SSTC.

I said that because in some places I read that above 1.200 turns the coil loss efficiency. What do you think?

Thank you

Kind regards

Offline Mads Barnkob

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Re: Secondary parameters
« Reply #1 on: May 17, 2020, 07:55:34 PM »
You are correct that SSTCs generally have lower ratio between width:height of the secondary coil.

You can use the guide lines for sizes, but keep to a ratio of 1:3 instead and you will have a lower impedance coil that still needs a high coupling to the primary coil.

I think your noise issues has much more to do with lack of grounding your secondary coil to a separate RF ground.
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline Alberto

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Re: Secondary parameters
« Reply #2 on: May 17, 2020, 10:18:22 PM »
...

Thank you for your answer.

Yes, I know I need to ground the coil, but with the quarantine it is difficult. Next week I´m going to buy a big metal tray to connect to ground and put the coil over it.

I am not sure about understanding your answer. Are you recomending me to keep a lower ratio like 1:3? For example 1.200 turns? I´m sorry, I´m learning English and sometimes is difficult to me.
« Last Edit: May 17, 2020, 11:10:42 PM by Alberto »

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Re: Secondary parameters
« Reply #2 on: May 17, 2020, 10:18:22 PM »

 


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