HF switcher supply construction and voltage multiplication

This forum is for specialized infomation important to the construction and safe operation of the high voltage electrical supplies and related circuitry needed for fusor operation.
Pierre_Thourault
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Re: HF switcher supply construction and voltage multiplication

Post by Pierre_Thourault » Sun Mar 15, 2020 10:23 pm

772A5E93-6B1B-4534-9616-7DD6C9940DCA.png

Pierre_Thourault
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Joined: Wed Jan 29, 2020 1:41 pm
Real name: Pierre Thourault

Re: HF switcher supply construction and voltage multiplication

Post by Pierre_Thourault » Wed Mar 18, 2020 5:07 pm

Hello everyone,

So after many times trying to understand the Capacitor Charging Power Supply (CCPS) using the Series Load Resonant (SLR) of Mr Carl Willis. I've decided to come back to a more classic design.

However I don't give up on the CCPS as I will do my best to understand it (by the way if anyone reading this can help me or has done this cicuit, you may email me via the forum ) so I'm trying to contact Mr Carl Willis, Mr Steve Ward and Mr Marco Denicolai ( if you know them may you please inform them that I email them since I have used very old email address I'm not sure they will get my email). For me, I'll learn more and more about this circuits.

But anyway, the goal of using the same driver for my future DRSSTC ( Double Resonant Solid State Tesla Coil ) and my future fusor is achieved : I am gonna send a picture of the circuit. Please tell me if you have suggestions, remarks or if you spot a mistake.

I hope everyone is fine in this period of pandemic !
Attachments
Circuit 3.PNG

John Futter
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Re: HF switcher supply construction and voltage multiplication

Post by John Futter » Wed Mar 18, 2020 5:39 pm

again no base or C,E protection
probably more silicon sacrifice to the gods of high voltage

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Bob Reite
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Re: HF switcher supply construction and voltage multiplication

Post by Bob Reite » Wed Mar 18, 2020 6:55 pm

LOL! Reminds me of the very first AM solid state transmitter. No protection for the output devices. The MW-1A model got the protection diodes. I suggest that you do the same.
The more reactive the materials, the more spectacular the failures.
The testing isn't over until the prototype is destroyed.

Pierre_Thourault
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Joined: Wed Jan 29, 2020 1:41 pm
Real name: Pierre Thourault

Re: HF switcher supply construction and voltage multiplication

Post by Pierre_Thourault » Fri Mar 20, 2020 1:05 pm

Hello everyone,

I have modified the circuit with diode between C and E. I have also added an inductor to smooth the ripple and limit the current. I have put a fuse too.
What do you think about these modifications ? Are there some mistakes ?

Now the next step is to finish the design completely without any errors, then find the values of all components. And after that I will try to simulate the circuit to make sure everything is OK. Then ... THE BUILD !

Pierre

Pierre_Thourault
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Joined: Wed Jan 29, 2020 1:41 pm
Real name: Pierre Thourault

Re: HF switcher supply construction and voltage multiplication

Post by Pierre_Thourault » Fri Mar 20, 2020 1:06 pm

Here's the schematic of the modified design
Attachments
Circuit 3 modifie.PNG

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