Neon converters (EVGs) - Hansen: LED technology, neon technique
... No. The "red" converters provide a certain DC portion in order to eliminate the so-called jelly-beaning. If used with a blue discharge tube, this would cause mercury migration with the result that one side of the tube would no longer glow. Is it possible to use a blue discharge converter for red dis ...
... No. The "red" converters provide a certain DC portion in order to eliminate the so-called jelly-beaning. If used with a blue discharge tube, this would cause mercury migration with the result that one side of the tube would no longer glow. Is it possible to use a blue discharge converter for red dis ...
Lampizator
... anode voltage secondary winding can be from 100 V AC to 220 V AC. The circuit is very tolerant. I use 110 VAC because after rectification gives 170 V DC, safe value below a capacitor rating value of 200V. And 110 V is easy to find for the reason of USA voltage being adopted in many products. Power s ...
... anode voltage secondary winding can be from 100 V AC to 220 V AC. The circuit is very tolerant. I use 110 VAC because after rectification gives 170 V DC, safe value below a capacitor rating value of 200V. And 110 V is easy to find for the reason of USA voltage being adopted in many products. Power s ...
X-ray Tube Operating Range
... Minimum and Maximum Anode Voltage An X-ray tube requires a minimum high voltage applied to the anode in order to draw off electrons from the filament. When this condition is satisfied, the beam of electrons will form and accelerate towards the target. Below the minimum anode voltage, electrons will ...
... Minimum and Maximum Anode Voltage An X-ray tube requires a minimum high voltage applied to the anode in order to draw off electrons from the filament. When this condition is satisfied, the beam of electrons will form and accelerate towards the target. Below the minimum anode voltage, electrons will ...
Chapter_7_Electronic_Structure_of_Atoms
... When solids are heated, they emit electromagnetic radiation over a wide range of wavelengths. Radiant energy emitted by an object at a certain temperature depends on its wavelength. ...
... When solids are heated, they emit electromagnetic radiation over a wide range of wavelengths. Radiant energy emitted by an object at a certain temperature depends on its wavelength. ...
Photomultiplier
Photomultiplier tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum. These detectors multiply the current produced by incident light by as much as 100 million times (i.e., 160 dB), in multiple dynode stages, enabling (for example) individual photons to be detected when the incident flux of light is very low. Unlike most vacuum tubes, they are not obsolete.The combination of high gain, low noise, high frequency response or, equivalently, ultra-fast response, and large area of collection has maintained photomultipliers an essential place in nuclear and particle physics, astronomy, medical diagnostics including blood tests, medical imaging, motion picture film scanning (telecine), radar jamming, and high-end image scanners known as drum scanners. Elements of photomultiplier technology, when integrated differently, are the basis of night vision devices.Semiconductor devices, particularly avalanche photodiodes, are alternatives to photomultipliers; however, photomultipliers are uniquely well-suited for applications requiring low-noise, high-sensitivity detection of light that is imperfectly collimated.