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Questions tagged [x-rays]

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7 votes
2 answers
3k views

Do neon signs emit x-rays?

I'm interested about whether or not a conventional neon sign such as this one could emit x-ray that could be harmful. The sign that you can see in the picture is just below my office window so I'm ...
Raaas's user avatar
  • 71
5 votes
1 answer
261 views

Why do spectrum analyzers generate X-Rays

Most, if not all, old HP spectrum analyzers say X-Rays generated in this intsr are sufficiently screened Why do they generate x-rays at all. The HP 8565E I am looking at can only measure up to 50 ...
Brian Carlton's user avatar
4 votes
2 answers
352 views

X-ray back-projection for conversion to hard-field magnetic induction tomography?

This is a question about hard-field back-projection as used in x-ray tomography, but applied to magnetic induction tomography (MIT). Al-Zeibak and Saunders (A feasibility study of in vivo ...
Brendan Darrer's user avatar
4 votes
0 answers
133 views

High voltage power supply polarity for X-ray tube application

High voltage power supplies (HVPS) in the range 100 to 200 kV are used for working with X-ray tube. Some HVPS produce negative output voltage or even bipolar output including negative and positive ...
Sam's user avatar
  • 53
2 votes
2 answers
1k views

Can a dental X-Ray machine be used to look at PCB?

I have an old castaway PCB that was being thrown out. I am having a hard time figuring out where all the traces go. Could a dental X-ray device be used to scan it (thus making it easier to follow the ...
BarrowWight's user avatar
2 votes
1 answer
969 views

How do failure modes of high voltage cables play out?

I fix x-ray equipment, and here is the connector that fits into the x-ray tube. It carries up to 150kV, and maybe 500mA during exposure. My boss tells me if I see some black carbon deposit on the ...
PJazz's user avatar
  • 857
1 vote
1 answer
179 views

X-ray filament and cathode connection

I was studying how X-ray machines works. I have seen that the filament creates a current that produces electrons. By applying a high voltage between the cathode and anode, the electrons move towards ...
kam1212's user avatar
  • 669
1 vote
1 answer
451 views

X-ray power input and power output Confusion

I was looking at the power calculations of the X-ray machines and found something a bit unusual. As we know the input power must be equal to the output power. Considering an x-ray machine giving an ...
kam1212's user avatar
  • 669
1 vote
1 answer
581 views

Zero Voltage switching

I am having confusion regarding the understanding of Zero Voltage switching as given in the website. What does the ZVS do in the circuit shown below? Does it produce a sine wave or it just makes the ...
kam1212's user avatar
  • 669
1 vote
0 answers
117 views

Would it be possible to power an X-Ray tube using a Marx generator?

To the best of my knowledge most X-Ray tubes are powered by a smaller voltage running through a large transformer to step it up into the magnitude of 10-100 KV. This larger voltage is then pulsed ...
mwhite22's user avatar
1 vote
0 answers
108 views

How could this capacitor have been damaged?

During testing, a capacitor was found to cause an intermittent failure - going short circuit when heated. The capacitor style is a through hole, radial lead, CECC rated 68nF MLCC. Our supplier makes ...
MIL-SPEC's user avatar
  • 1,108
0 votes
1 answer
119 views

PWM generation for the transformer using SG3524N

I was looking at one of the schematics of the filament board of an x-ray machine, where they had used the SG3524N for the generation of PWM and MOSFETs for the generation of an alternating voltage for ...
kam1212's user avatar
  • 669
0 votes
1 answer
127 views

Can I read programmed content inside any sort of non-volatile re-programmable memory device with Microscope, X-ray, etc.?

Non-volatile re-programmable memory like NAND flash, NOR flash, and etc. stores information in forms of electron charges and doesn't change in structural forms that can be inspected with X-ray or ...
user3498780's user avatar
0 votes
1 answer
62 views

Resonance inverters and pulsation frequency

I was reading one of the patents for the x-ray generator when I found a resonance inverter attached in front of the switching circuit. I understood how the system works but one statement written is ...
kam1212's user avatar
  • 669
0 votes
2 answers
129 views

What technique (ultrasound/infrared) should I use to detect seeds inside a fruit? [duplicate]

This fruit is simplistic as there is a thin skin surrounding it. Inside it is a tiny ball of liquid and that is where the dense seed forms. The is seed much more denser in comparison with the liquid ...
Bezal-el's user avatar

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