Questions tagged [ionization]

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Ion current measurement

I have a few questions: To measure the ion current in air plasma from a source that works in pulses, what method is best for ion current measurements? Is it by using a Rogowski coil or by measuring ...
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45 views

Transformer-insulated flame ionization detector. How to improve response? Triode, messure current safety, ignition fires

I am trying to do a isolate flame ionization detector with a transformer ignition. But, when I put it on the frame, nothing change.. (0.2VAC) I put a amplifier (10 teraohms impedance) to read the ...
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3answers
115 views

Current leaks at 500 VDC

Background: I have a small soldered joint on a 500 VDC (0.1 A) lead that's exposed to air. The edges of the joint are fairly ridged and have a few significant edges. In the higher voltage range (40 kV)...
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1answer
184 views

How to reduce 30 amps to 5 [duplicate]

I recently bought a Transformer so that I can make an ionic lifter but it has a max 30 amp output and I’m sure that is way too much for what I need plus Since I have this plugged straight into the ...
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1answer
327 views

How can I rectify up to 85 kV?

I've recently gotten into eletrochemistry, and I found out that if you break through \$\epsilon_{0}\$ with a high enough voltage you can ionize various gasses. I've already wound a 1:1250 EE core that ...
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5answers
240 views

Open circuit ground multiplexing?

I am experimenting with electrospray ionization. The setup has a 4kV power supply connected to an electrode that is separated from a return lug (or ground plate) via an air gap, followed by an inline ...
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6answers
3k views

Why do high-voltage transformers need oil?

Someone told me that high-voltage transformers need oil because it prevents arcing. However, in terms of dielectric breakdown, isn't air the strongest? I remember from classes in college that as the ...
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3answers
162 views

Amplifying an ionization current with an op amp

My observation: Previously at my work I was assigned a project in which I needed to amplify an AC signal from a piezoelectric electric sensor. I simply made an inverted op amp circuit to accomplish ...
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1answer
220 views

Why are ionization smoke detectors bad at detecting smoldering fires?

I have been doing some research on the differences between ionization and photoelectric smoke detectors, and main differences in their capabilities, seems to be their ability to detect different kinds ...
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1answer
76 views

Does my electric clearing field actually make ions?

I am using an electric clearing field of 15v/10cm (~150V/m) to remove ions from a test chamber, however I'm wondering to what extent the localisation of the field's reference voltage plays a role. ...
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1answer
44 views

Radio Noise from Storm

I drove through a Wyoming thunderstorm today. Just for fun, I set my AM car radio to the top end of the AM broadcast band where there was no station audible. Sure enough, I heard the lightning ...
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1answer
88 views

Negative air ionizer with a electric net of 3X 230V AC

I want to make the following negative air ionizer but the following instrucable uses a net of 230V AC + N. My question is : If I make the following circuit but power it with the two phases of a ...
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1answer
1k views

Are “ionizing” hair dryers any different from the regular ones? [closed]

I've been shopping for hair dryers and in all malls I've been to the salespeople explained how the "ionizing" hair dryers are better than the ones without that function, because it makes your hair ...