Naked Science Forum

On the Lighter Side => Science Experiments => Topic started by: hamdani yusuf on 27/03/2023 16:39:27

Title: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 27/03/2023 16:39:27
I've got one of it, and recorded some videos with it. It can generate spark 1 to 2 cm long in open air. Some dielectric barrier can prevent the formation of spark. I think there are many interesting things can be shown with it.

Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Zer0 on 28/03/2023 19:41:07
I do not know anything about HVG.

But, why is it called Generator?

Does it Generate, which i feel is similar to Create?

Or does it simply just Convert, hence a Converter/Transformer?

(by the way, Good Job putting up those WARNING Signs at the beginning)
Safety First!
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 29/03/2023 03:49:14
why is it called Generator?
Perhaps for marketing purpose. That's the title of the device if you buy it online.

Does it Generate, which i feel is similar to Create?

Or does it simply just Convert, hence a Converter/Transformer?
The circuit diagram shown at 6:50 shows that it consists of an oscillator, step up transformer, and voltage multiplier.

https://en.wikipedia.org/wiki/Voltage_multiplier

Even "real" generators merely produce electricity by converting from other forms of energy.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Bored chemist on 29/03/2023 08:57:07
But, why is it called Generator?
By analogy with things like this
https://en.wikipedia.org/wiki/Van_de_Graaff_generator
All but the very smallest are driven by electric motors.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: paul cotter on 29/03/2023 14:54:45
Electrocution.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 30/03/2023 09:42:58
Some online shops market this device as "Tesla coil module", but the video above shows that it's not.
To make sure, I've measured the output of the module using a multimeter. In resistance mode, the meter shows over-range value, and can't distinguish it from an open circuit. But in capacitance mode, there is a small value shown by the meter. These results are more consistent with the output of a voltage multiplier, rather than a Tesla coil.

The output of a voltage multiplier produces DC, while Tesla coil produces AC voltage. But my experiments done with it so far haven't shown noticeable difference. Other than producing spark, I've also used the device to lit up a UVC light tube which I've used in my other experiment on microwave transceiver.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Zer0 on 01/04/2023 21:34:52
Can it be used to create a Taser?
& If Yes, can it be disguised as a Lipstick?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 03/04/2023 13:58:39
Can it be used to create a Taser?
& If Yes, can it be disguised as a Lipstick?
Some online shops advertised this device as a taser. Although it may not meet the criteria.

I've been inadvertently shocked several times during my experiments, although not at its full power. The small capacitance of capacitors in the voltage multiplier part, as well as small transistor in oscillator part limit the power delivered to human bodybody,  and may not be capable of paralyzing an adult.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Zer0 on 03/04/2023 20:18:22
Hmm...so it could make an Attacking stray cat or dog run away, but won't work on Humans.

Best not to weaponize it.
If You did, then You will make video & upload, then Cops will come to your house & then You might fall into Trouble!

By the way, You broke & tore it apart in the Video.
But still it might be Worth something Right?
Like, it's got precious metals inside.
Any Resale Value?

(Plz be more cautious & careful next time, wear some rubber gloves or something Yes)
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 03/04/2023 23:14:38
By the way, You broke & tore it apart in the Video.
It wasn't me. I posted it as an introduction to what I will use in my experiments.
My device is still working fine, at least for now.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Zer0 on 05/04/2023 20:10:50
By the way, You broke & tore it apart in the Video.
It wasn't me. I posted it as an introduction to what I will use in my experiments.
My device is still working fine, at least for now.

Sorry, i missed the Details in the Video.
& Sorry for the Bad Suggestion of making a Tazer out of it.

Well how about making a Car Jump Starter from it.

When cars don't start, bcoz of dead battery.
Then another car or live battery is required to start the dead battery car.

If a battery pack is attached to this HVG, n two small wires...Can a Jump Starter Keychain be made from this?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 06/04/2023 08:47:13
Sorry, i missed the Details in the Video.
& Sorry for the Bad Suggestion of making a Tazer out of it.

Well how about making a Car Jump Starter from it.

When cars don't start, bcoz of dead battery.
Then another car or live battery is required to start the dead battery car.

If a battery pack is attached to this HVG, n two small wires...Can a Jump Starter Keychain be made from this?

Jump starting gasoline cars is usually needed because of dead battery. It requires good condition of other components. It also requires high power. Normally, the engine is started using 12V car battery, and can draw current to hundreds of Amperes typically 400A, hence 4.8 kW is required. When the power is too low, it would be cooled down by the fuel and fail to ignite.
https://en.wikipedia.org/wiki/Jump_start_(vehicle)
https://en.wikipedia.org/wiki/Spark_plug
(https://pbs.twimg.com/media/D1dAj_-WkAAkjPe?format=jpg&name=900x900)
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 11/04/2023 15:05:05
I've made several experiments with the device using a 10Ah USB power bank as the power supply. But it seemed that The power bank got depleted faster each time, until finally it can only produce a single spark before it stopped working. It cannot be recharged anymore.

I replaced the power bank with a new one, but the same thing happened. Now I have two dead power banks. I guess there's something wrong with the electronic components in the high voltage generator.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 11/04/2023 15:24:57
I'm curious if the electronic device can produce observable electrostatic effects as shown in the videos below using Van de Graaff generator.

Fun with Static Electricity! - A Prequel to "Should a Person Touch 200,000 Volts?"

Should a Person Touch 200,000 Volts? A Van de Graaff generator experiment!

The spark produced by the Van de Graaff generator looks longer than my device's. Something must be off. It's either the video author underestimated his generator, or my generator has actually lower voltage than advertised.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Bored chemist on 11/04/2023 16:28:06
When the power is too low, it would be cooled down by the fuel and fail to ignite.
What would?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Zer0 on 12/04/2023 20:45:49
I replaced the power bank with a new one, but the same thing happened. Now I have two dead power banks. I guess there's something wrong with the electronic components in the high voltage generator.

Looks like you Finally made something, a Power Bank Killer!

Anyways, aren't the Power Banks repairable?

Was it the whole chemical Battery component that was Severely damaged, or just the internal circuitry Chips?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 13/04/2023 09:04:37
When the power is too low, it would be cooled down by the fuel and fail to ignite.
What would?
The sparking plasma.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 13/04/2023 09:07:14
I replaced the power bank with a new one, but the same thing happened. Now I have two dead power banks. I guess there's something wrong with the electronic components in the high voltage generator.

Looks like you Finally made something, a Power Bank Killer!

Anyways, aren't the Power Banks repairable?

Was it the whole chemical Battery component that was Severely damaged, or just the internal circuitry Chips?
I haven't checked them yet. My plan for the next step is to use a USB adaptor instead of power bank.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Zer0 on 14/04/2023 21:21:50
lol wut?

Well!
As long as You aren't messing or interfering or experimenting Directly with the electrical wall sockets of your Home, it'll be Fine!

But if tomorrow, all of a sudden, the whole Planet loses Electricity n is plunged into Darkness...
Atleast I'll Know what happened & why.
(Damm! Yusuf lol)
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 17/04/2023 03:43:04
OK. Finally I finished editing the videos and uploaded them to my Youtube channel.
The first video is an introduction of the high voltage generator device used in my experiments.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 17/04/2023 03:43:54
The second video demonstrates electric spark generation and blockage.
Idea for follow up videos : To use various materials with different thickness as the barrier between the electrodes.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 17/04/2023 03:47:07
The third video demonstrates the effect of the high voltage generator on a gas discharge lamp.
Idea for follow up videos : To use various materials with different sizes and shapes as the electrode to transfer energy to the gas discharge lamp.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 18/04/2023 12:51:58
The third video demonstrates the effect of the high voltage generator on a gas discharge lamp.
Can anyone try to explain how a steel pliers can make the UVC lamp glows brighter?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Bored chemist on 19/04/2023 13:11:17
The third video demonstrates the effect of the high voltage generator on a gas discharge lamp.
Can anyone try to explain how a steel pliers can make the UVC lamp glows brighter?
More surface area thus more capacitance, thus more coupling of the electricity into the lamp.
What I can't explain is why you choose to expose yourself to hard UV for no reason.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 20/04/2023 10:58:52
More surface area thus more capacitance, thus more coupling of the electricity into the lamp.
Which factor do you think is more significant? Is it the capacitance, or the coupling?
If a capacitor is added to the output of the generator, will it affect the glow?
The lamp glows brightest when its electrode is in contact with the pliers.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 20/04/2023 11:42:43
What I can't explain is why you choose to expose yourself to hard UV for no reason.
Thanks for your concern. The reason is I didn't have a better alternative to demonstrate glowing of gas discharge lamp.
The lamp is designed for use in aquarium, thus I think it's safe enough for humans. Further precautions are keeping the duration of exposure short, and avoid staring directly to the glowing lamp. During the experiment, observation was made through the smart phone display.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Bored chemist on 20/04/2023 13:05:02
https://en.wikipedia.org/wiki/Capacitive_coupling
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 23/04/2023 13:20:28
If a capacitor is added to the output of the generator, will it affect the glow?
It seems like the best way to find out is by just do it. But it may took some time for me to replace the faulty generator, and purchase the high voltage capacitor. Perhaps building DIY capacitor can also be considered.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Bored chemist on 23/04/2023 14:15:56
Do you understand that the electricity only gets through the glass because  the gas in the tube; the glass tube wall, and the wire or pliers outside the tube form a capacitor?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 29/04/2023 07:32:55
Do you understand that the electricity only gets through the glass because  the gas in the tube; the glass tube wall, and the wire or pliers outside the tube form a capacitor?
Have you watched the video thoroughly?
The lamp glows brightest when its electrode is in contact with the pliers.
Note that without the pliers, contact of lamp electrode and generator electrode didn't show significant glow.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 02/05/2023 15:15:33
Meanwhile, I've repeated the experiments using another model of high voltage generator. It has similar basic structure as previous one. But it also has notable differences.
The oscillator part is visibly more complex than previous one. There are more electronic components, including some integrated circuits. I guess they are for power regulation or overcurrent protection.
The output electrodes of the voltage multiplier is connected to a 1 nF capacitor rated at 20kV, without dissipating resistor. The advertised voltage is 15 kV, compared to 400 kV in previous model. This is reflected by the length of the spark it produces, which is notably shorter than before.
Interestingly, it can somehow produce brighter glow in a UVC lamp tube.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 04/05/2023 05:27:12
The lamp is designed for use in aquarium, thus I think it's safe enough for humans. Further precautions are keeping the duration of exposure short, and avoid staring directly to the glowing lamp. During the experiment, observation was made through the smart phone display.
Another important thing as consideration, is that UVC lamp tube doesn't have fluorescent coating which may interact with the electromagnetic field applied, and make the problem more complicated. 

A few months ago I've made an experiment investigating microwave transmission through plasma.  At the time, I found a counterfeit money detector with UVA source from a gas discharge lamp. The experiment can show a weak but convincing difference of opacity in microwave frequency between on and off UVA lamp.
Unfortunately, the plasma inside the lamp is not the only electrically conductive material there. There's also phosphor coating inside of the lamp glass which may also change its conductivity when powered on..
Here it is.



If you want to be really certain, you can buy a UV C bulb with no phosphor.
You will probably want to screen the UV it produces.
That's what I did last week. I've done the recording of the experiment, but the editing and uploading may take a while.
For safety precaution, I only power it up for short durations at a time.
You can wait for the video to be available. But if you have no patience or time to watch it later, you can sneak a peek at the results.

Spoiler: show

- the UV lamp doesn't produce detectable microwave.
- when unpowered, the lamp (with the gas in it) is almost completely transparent to microwave.
- when powered on, the lamp becomes slightly opaque to microwave.
 
I thus conclude that in previous experiment with UVA lamp, the phosphor coating obstructed the microwave transmission because it's partially conductive in microwave frequency. But when it's fluorescing, it becomes slightly less conductive.

Here it is.
This is a follow up of the experiment in previous video. This time the gas-discharge lamp has no phosphor coating, so the effect on the microwave transmission should be produced specifically by the phase change of gas in the lamp into plasma.


Please let me know if you want something to check or verify regarding these experiments.

Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 04/05/2023 05:34:58
Meanwhile, I've repeated the experiments using another model of high voltage generator. It has similar basic structure as previous one. But it also has notable differences.
The oscillator part is visibly more complex than previous one. There are more electronic components, including some integrated circuits. I guess they are for power regulation or overcurrent protection.
The output electrodes of the voltage multiplier is connected to a 1 nF capacitor rated at 20kV, without dissipating resistor. The advertised voltage is 15 kV, compared to 400 kV in previous model. This is reflected by the length of the spark it produces, which is notably shorter than before.
Interestingly, it can somehow produce brighter glow in a UVC lamp tube.
I think this video can explain what happened with my experiments above.

Closing a POWER ARC Switch with a WEAK ARC (LATITY-012)

The higher voltage generator can produce higher voltage when there's no load, but once the electric current flows, the voltage and power drop significantly.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 22/05/2023 13:34:36
This is the model I used to replace the broken high voltage generator used in previous videos. Its abilities to produce continuous arc and withstand short circuited load are important advantages over the previous model.
(https://images.tokopedia.net/img/cache/900/hDjmkQ/2023/3/24/2e49900b-343b-4f2e-a2a1-e6a71a651523.jpg)
Quote
Model Number : Boost Coil Module
Brand Name : NCVHRT
Origin : Mainland China

Product Description
100% Brand New and High Quality
Voltage within 9V can work for a long time continuous arcing for 1 day.
When the voltage is longer than 9V, it is necessary to add heat to the fan.
5 ~ 12V power supply, available 2-3 18650 battery series power supply, or ordinary router power supply or 9V/12V power supply.
Power must be supplied within the nominal voltage range for proper operation! If the voltage is too low, the module will undervoltage and stop working. Never reverse, overpressure, otherwise it will damage the module or even cause the capacitor to explode!
This product poses a certain risk to non-professionals and must be operated in strict accordance with the electrical specifications!
Note: This product is a semi-finished product without a shell. It is recommended that it be potted with paraffin or epoxy to improve durability.

Specifications and parameters:
Input voltage: 5V~12V
Input current: 0.2A~0.5A
Output voltage: 5KV~15KV
Pulse capacitance: default 1000pF ( buyer can choice 100pF)
Pulse frequency: 3~20 times/second
Arc distance: 1cm~1.5cm
Arc characteristics: white, low temperature 24 hours continuous arc, short / no load can be, high efficiency and low heat circuit design, no radiator!

(If the voltage is not enough, up to 4 modules can be connected in parallel, the output terminals can be connected in series, and the arc can be increased by 4 times)

Package Included:
1 x Boost Coil Module
72095

Description:
It is stated that the output power of this module is affected by many factors such as the front power supply and the post load in addition
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 29/05/2023 14:14:29
This is the video introducing new high voltage generator with better control.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 01/06/2023 09:35:21
in this video we repeat the experiment with gas discharge lamp tube, but this time we use the new high voltage generator.


Near the end of the video, you can see the effect of electric spark to the brightness of the gas discharge glow.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 17/09/2023 09:53:48
I'm preparing a video to show electrostatic force using my generator.
But meanwhile, I'll share someone else's video which also shows interesting effects using high voltage generator.
Plasma pinwheel.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 18/09/2023 03:53:51
I'm preparing a video to show electrostatic force using my generator.
Here it is.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: alancalverd on 23/09/2023 19:46:16
Jump starting gasoline cars is usually needed because of dead battery. It requires good condition of other components. It also requires high power. Normally, the engine is started using 12V car battery, and can draw current to hundreds of Amperes typically 400A, hence 4.8 kW is required. When the power is too low, it would be cooled down by the fuel and fail to ignite.
When I couldn't afford a new starter battery, I used to start my old Skoda MB with a 12V dry battery temporarily attached to the ignition system. The starter battery only had to crank the motor over one or two revolutions before it picked up and the dynamo (pre-alternator days!) put some life back into it. Adding a diode in the "proper" supply line made it all very easy! 
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: alancalverd on 23/09/2023 19:52:35
Incidentally the idea of encapsulating the HV generator in paraffin wax (candle wax) is a good one - makes life a lot safer and provides mechanical protection for the coil too. I built a 100 kV 10 mA unit about 50 years ago with a voltage multiplier inside a liter of paraffin wax, driven by a 20 kHz oscillator. Great fun!
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 23/09/2023 23:18:38
Jump starting gasoline cars is usually needed because of dead battery. It requires good condition of other components. It also requires high power. Normally, the engine is started using 12V car battery, and can draw current to hundreds of Amperes typically 400A, hence 4.8 kW is required. When the power is too low, it would be cooled down by the fuel and fail to ignite.
When I couldn't afford a new starter battery, I used to start my old Skoda MB with a 12V dry battery temporarily attached to the ignition system. The starter battery only had to crank the motor over one or two revolutions before it picked up and the dynamo (pre-alternator days!) put some life back into it. Adding a diode in the "proper" supply line made it all very easy! 
It seems like a capacitor can help, like in a camera flash.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 23/09/2023 23:20:37
Incidentally the idea of encapsulating the HV generator in paraffin wax (candle wax) is a good one - makes life a lot safer and provides mechanical protection for the coil too. I built a 100 kV 10 mA unit about 50 years ago with a voltage multiplier inside a liter of paraffin wax, driven by a 20 kHz oscillator. Great fun!
Did you consider heat dissipation?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 25/09/2023 09:16:56
Just found another great experiment using high voltage generator.
Supercharging plastic bottle to Breakdown

Quote
In this experiment, we use a high voltage multiplier to supercharge a thick plastic bottle to the point where the charge can no longer be contained. The results are spectacular. The plastic of the bottle holds an incredible amount of charge towards the end of the experiment.

Here are my questions to the author.
After the flash over, is the bottle positively charged, or negatively charged instead? How would you determine it?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: Bored chemist on 25/09/2023 09:31:58
Quite possibly both.
https://en.wikipedia.org/wiki/Electret
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 27/09/2023 03:31:03
Here's the answer by the author of the video above.
Quote
The outside of the bottle is negative. The inside of the bottle is positive. The net overall charge of the bottle with respect to earth ground is zero. The polarity could be determined by how it lights up a neon bulb. The negative terminal in a neon bulb containing two terminals would light up brighter than the positive terminal.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 16/10/2023 06:35:15
Just found a great video showing a phenomenon I've tried to show before.

Point discharge experiment

Quote
The experiment shows that positive electricity prefers the pointed electrode; negative electricity prefers the disk-shaped electrode. In the early days of X-ray technology, this effect was used to eliminate the closing current from a spark inductor and to supply only the opening current to the X-ray tube.

I've made an attempt to show the difference in behavior between positively charged and negatively charged electrodes in atmospheric spark gaps. Unlike this video, I only used one pair of electrodes. I tried to adjust the gap between the pointy and blunt electrodes to show electric spark in one direction only, but didn't work.
When the gap was too small, the spark occurred in both direction. When the gap was too big, the spark didn't occur in both direction.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 16/10/2023 10:17:35
I have a follow up experiment idea. Repeat the experiment with double spark gaps like that, but the gaps are adjustable independently. Find out how much difference is needed to make both gaps produce electric spark.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 19/10/2023 22:46:05
Here's another way to demonstrate a use of high voltage generator.

Asymmetric thrust capacitor can be used as a speaker.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 30/10/2023 06:56:28
This video may give some inspiration for the next experiments using high voltage generators.

Arcs, Sparks and Jacob's Ladders

Quote
For Halloween, here is a quick look and  electrical arcs and discharges, much like you often see in the old Frankenstein movies and the wonderful TV shows from the 60s like The Munsters and The Addams Family.  Also included are many of the things we use sparks for in our everyday lives including spark plugs, lighting gas stoves, flash tubes, fluorescent lights, neon bulbs, and arc welding.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 14/11/2023 11:03:31
This video is also interesting. I think I'll try to replicate it using my high voltage generator.

Basics of electrostatics - Episode 12: Influence
Quote
Influence is a consequence of the force effect between electrical charges. We explain and show what happens.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 14/11/2023 11:46:36
The channel also have many other interesting videos with electrostatics phenomena. But this one especially made me curious.
Basics of electrostatics - Episode 3: Why does a tip discharge differently than a ball?

Quote
We show you what effect a tip and a ball have on PVC tubes which are charged with electrostatics.

The electric charge on the PVC pipes must go somewhere, presumably to the needle. Can this transfer of electric charges be stopped by a plastic sheet between them? Can it be stopped by a Faraday cage instead?
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 21/11/2023 13:05:49
Tesla Coil Plasma Rectification
Quote
In this experiment a high frequency high voltage diode is connected to the breakout point of a tesla coil to see if the Tesla coil will produce DC high voltage output instead of alternating current electric field .

I think some interesting effects by rectified tesla coil can also be replicated by my high voltage DC generator.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 14/12/2023 02:36:25

The Wimshurst machine used in the video can be replaced by my high voltage DC generator.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 16/01/2024 12:50:43
I think it would be interesting to replicate the experiment in this video using my high voltage generator.

Quote
Here is an interesting experiment that I am replicating from the JNL website. It is high voltage electrolysis that creates a an underwater plasma, but only on the negative electrode. It requires the use a asymmetrical electrodes, and I must admit, I can not explain the physics behind this phenomenon!? A very interesting video to say the least! Included is a link to the JNL webpage.
http://jlnlabs.online.fr/cfr/ape/index.htm
Quote
The Asymmetrical Plasma Electrolysis (APE) is a simple experiment which can be easily performed with few material and uses a common lab equipement. This experiment will demonstrate you very easily that a glow discharge plasma can be observed on the CATHOD during an electrolysis process at a high voltage ( ~ 200 V DC ).

This is the main process used during the high temperature plasma electrolysis (CFR) experiment from Tadahiko Mizuno from the university of Hokkaido in Japan.
A similar experiment has also been performed by Renzo Mondaini (Italy).

To conduct this experiment you need :

1 auto-transformer (0-270V) 13A, 3.51 KVA
1 circuit breaker (230V, 16A )
2 diodes 400 V 5A
1 capacitor 2200 ?F, 500V
1 borrosilicate beaker ( 1000 mL )
2 pure tugnsten rods (commonly used for TIG welding) 2 mm diameter 150 mm length
400 mL of a solution of Potassium Carbonate (K2CO3) at 0.2 M
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 05/02/2024 06:15:46
Another interesting experiment can be done with the high voltage generator.
Electricity and Magnetism 3 William Gilbert and the Versorium
Quote
Learn about William Gilbert and his electric charge detecting instrument, the versorium.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 10/02/2024 06:12:12
Why moving charges produce magnetic field?

He asks an interesting question at around 14:45.
Does magnetic field not exist at all? Is it only electric field and Coulomb's law?
This raise a curious question, does a stationary electric charge affect a needle magnet?
Our voltage generator seems to have the capacity to answer this question.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 10/02/2024 12:02:27
This video presents a safety precautions for playing with electrostatic applications.

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We show you how dagerous propagating brush discharges could be.
Welcome to episode 16 of our knowledge series "Basics of electrostatics".
With this series we want to share our know how about electrostatics with you to make electrostatic applications safer.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 10/02/2024 12:07:50
There's another experiment I'm interested to replicate.

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there is wood chips from my garden in the water. The plasma is ignited on the water and  attracts the wood chips in all directions.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 17/02/2024 22:45:54
Recently I found out that Rowland made experiment with rotating copper disc at high voltage which can move small magnetic needles. In other words, moving charged conductor produces magnetic field. Unfortunately I can't find the reference in Wikipedia.

https://en.m.wikipedia.org/wiki/Henry_Augustus_Rowland

It's possible that the magnet simply moved due to Eddy current. If that's the case, removing the voltage should have no effect. I guess we can find out by replicating the experiment. I'm curious why it's not more widely known.
This is an interesting experiment to do. I think it can be done using my high voltage generator.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 25/02/2024 16:34:46
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Making lightning is fun, and I built a Static electric gun to do just that. It can shoot static across the room, and also deliver a really serious charge.
Title: Re: What phenomena can be demonstrated by a cheap high voltage generator?
Post by: hamdani yusuf on 25/03/2024 09:57:11
Here's another experiment that I'd like to replicate using my high voltage generator.

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