Author Topic: Counterpoise? Need help!  (Read 937 times)

Offline antoine_z_h

  • High Voltage Enthusiast
  • *
  • Posts: 9
  • Karma: +0/-0
    • View Profile
Counterpoise? Need help!
« on: June 22, 2018, 12:23:41 PM »
Hi Guys.,

So I have SSTC2 now, working and operational, and I get feedback thru a current transformer, but unfortunately I don't have any Good Ground so sometimes my secondary feedback wire spark inside the CT, my friend Chris advised me about counterpoise, which would help grounding my coil ..


Any idea how to make that at home ? Can I use aluminum foil sheet ? or reflective car sunscreen?


Sunscreen
« Last Edit: June 22, 2018, 10:07:29 PM by Mads Barnkob »

Offline Hydron

  • Administrator
  • High Voltage Engineer
  • *****
  • Posts: 226
  • Karma: +6/-0
    • View Profile
Re: COUNTERPOISE ??? NEED HELP
« Reply #1 on: June 22, 2018, 01:08:08 PM »
Aluminium foil would work. The car windscreen thing probably has a very thin layer of aluminium - maybe too thin to be useful, and tricky to get a good connection.

I think most people use "chicken wire" mesh or similar as it is more durable and easier to deal with than big bits of foil. Note that the holes are _not_ a problem for this use.

Offline antoine_z_h

  • High Voltage Enthusiast
  • *
  • Posts: 9
  • Karma: +0/-0
    • View Profile
Re: COUNTERPOISE ??? NEED HELP
« Reply #2 on: June 22, 2018, 02:08:23 PM »
Okay so I may use chicken wire , or a mesh with tighter holes, would both work ?




Also please could you tell me, how to apply that to my device ? I mean do you want me to spread a sheet of the mesh under my coil (lets say 1M X 1M ) and connect the secondary ground to it ?

thanks,

Offline profdc9

  • High Voltage Engineer
  • ****
  • Posts: 213
  • Karma: +10/-0
    • View Profile
Re: COUNTERPOISE ??? NEED HELP
« Reply #3 on: June 22, 2018, 03:09:34 PM »
Either will work.  Even if the counterpoise was a loop of wire on the floor with spokes from a center point, the capacitance would be a good fraction of a fully filled mesh because the charge tends to be concentrated on the edge of the counterpoise.  However, it is still worth using chicken wire rather than a loop of wire as its cheap and still given you more capacitance.

Dan

Offline antoine_z_h

  • High Voltage Enthusiast
  • *
  • Posts: 9
  • Karma: +0/-0
    • View Profile
Re: COUNTERPOISE ??? NEED HELP
« Reply #4 on: June 22, 2018, 03:58:34 PM »
can you tell me how to apply that in real life ?

I mean do you want me to spread a sheet of the mesh under my coil (lets say 1M X 1M ) and connect the secondary ground to it ?

Offline Mads Barnkob

  • Administrator
  • High Voltage Senior
  • *****
  • Posts: 990
  • Karma: +15/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: COUNTERPOISE ??? NEED HELP
« Reply #5 on: June 22, 2018, 10:05:10 PM »
can you tell me how to apply that in real life ?

I mean do you want me to spread a sheet of the mesh under my coil (lets say 1M X 1M ) and connect the secondary ground to it ?

Yes, think of it as an artificial ground plane. The idea of the ground is to have a much bigger capacitance than your topload, so there is a ratio between its size and how effective it will be. It is recommended to have roughly 10 times capacitance in the ground plane compared to the topload, that is is almost always not practically possible.

You should read this huge article I wrote: http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/grounding-circuit-protection-and-emi/
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

High Voltage Forum

Re: COUNTERPOISE ??? NEED HELP
« Reply #5 on: June 22, 2018, 10:05:10 PM »

 


* Recent Topics and Posts

post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
hightemp1
Today at 05:51:09 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
Today at 04:07:17 AM
post Strange GDT signals (need to help)
[Dual Resonant Solid State Tesla coils]
VNTC
Today at 02:19:24 AM
post Re: Easy access to optimal resonance frequency but the benefit is quite small
[Dual Resonant Solid State Tesla coils]
VNTC
Today at 02:00:48 AM
post Re: Strange gdt waveforms
[Dual Resonant Solid State Tesla coils]
VNTC
Today at 01:33:56 AM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
May 22, 2019, 08:31:55 PM
post Re: Easy access to optimal resonance frequency but the benefit is quite small
[Dual Resonant Solid State Tesla coils]
dexter
May 22, 2019, 08:31:51 PM
post Easy access to optimal resonance frequency but the benefit is quite small
[Dual Resonant Solid State Tesla coils]
VNTC
May 21, 2019, 11:35:57 PM
post Re: Offgrid 48V solar to 24V battery setup
[Electronic circuits]
Mads Barnkob
May 21, 2019, 09:59:54 PM
post Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
Mads Barnkob
May 21, 2019, 09:51:27 PM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
T3sl4co1l
May 21, 2019, 09:49:03 PM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 21, 2019, 09:02:10 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 08:59:57 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
May 21, 2019, 08:28:43 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
May 21, 2019, 08:22:28 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 06:21:37 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 21, 2019, 06:12:55 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
profdc9
May 21, 2019, 04:06:38 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 03:56:56 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 03:46:56 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
profdc9
May 21, 2019, 02:32:59 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 21, 2019, 06:12:18 AM
post Re: Offgrid 48V solar to 24V battery setup
[Electronic circuits]
profdc9
May 20, 2019, 11:30:34 PM
post DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 20, 2019, 06:38:54 PM
post Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
Teravolt
May 20, 2019, 06:33:49 PM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 20, 2019, 02:27:59 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
hightemp1
May 20, 2019, 02:57:46 AM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
T3sl4co1l
May 20, 2019, 01:06:27 AM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 19, 2019, 09:14:59 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 19, 2019, 06:40:41 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
flyrod
May 19, 2019, 04:04:12 PM
post Re: Offgrid 48V solar to 24V battery setup
[Electronic circuits]
Mads Barnkob
May 19, 2019, 11:24:46 AM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
flyrod
May 19, 2019, 03:22:54 AM
post Re: Are bleeder resistors necessary if I can easily discharge my capacitor?
[Spark gap Tesla coils]
profdc9
May 19, 2019, 03:18:52 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 18, 2019, 10:48:59 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Golddustpeak
May 18, 2019, 04:19:11 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 17, 2019, 10:57:17 PM
post Are bleeder resistors necessary if I can easily discharge my capacitor?
[Spark gap Tesla coils]
jpb133
May 17, 2019, 09:41:56 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Uspring
May 17, 2019, 12:41:17 PM
post ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 16, 2019, 04:15:58 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Fumeaux
May 16, 2019, 02:19:39 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Golddustpeak
May 16, 2019, 01:50:44 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Uspring
May 16, 2019, 12:17:01 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Fumeaux
May 16, 2019, 08:45:15 AM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
May 15, 2019, 11:49:59 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Hydron
May 15, 2019, 10:51:33 PM
post Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
May 15, 2019, 09:35:41 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Golddustpeak
May 15, 2019, 05:07:20 PM
post Re: Mounting LCD CFL's around DRSSTC?
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
May 15, 2019, 12:46:33 PM
post Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
Mads Barnkob
May 15, 2019, 10:08:11 AM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30