Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

The Tesla Coil

If you have a glass system and can achieve a vacuum between approximately 10 to approximately 10 3 torr, then you can use a Tesla coil (sometimes called a sparker ) to look for moderate-size leaks. Because this range is the vacuum range of a mechanical vacuum pump, the Tesla coil provides an excellent tool for examining such systems. [Pg.446]

Metal components confound Tesla coil use Their ground is easier to obtain than the ground found by passing through a glass leak and the poorer conducting discharge within. [Pg.447]

It cannot be used near metal clamps or glass-to-metal seals on a glass system. The metal provides a ground for the electric discharge, bypassing the ionization of the gas inside the system. [Pg.447]

A large quantity of very small holes may prevent you from obtaining a decent vacuum. However, none of the holes may be large enough for the Tesla coil to indicate a leak. [Pg.447]

The self-contained Tesla coils often found in many labs are recommended by the manufacturers not to be used for longer than 10 minutes of continuous operation. If your needs require long continuous use on a consistent basis, heavy-duty Tesla coils are available that can be used continuously. These coils are easily identified because they have small boxes (approximately 5 in. x 5 in. x 8 in) connected to their hand-held sections. These hand-held sections are the same as those found on standard light-duty Tesla coils (see Fig. 7.57). [Pg.447]


There are at least three sets of circumstances where the Tesla coil discharge cannot be used to locate leaks ... [Pg.22]

Chlorine excitation was obtained by a corona discharge on platinum wire points at 40 kv., 2 ma., and 4-5 Me. from the tesla coil output of a vacuum system leak tester. According to Steacie (3) more than 40% atomic chlorine... [Pg.674]

The Tesla coil will not find a leak within a demountable (seals such as stopcocks or joints) that is caused by poor application of grease or old stopcock grease that has sheared. [Pg.447]

The Tesla coil should not be used near O-ring joints because the coil can destroy the O-ring by burning a strip across its side. [Pg.448]

It is unlikely that a leak could develop on a glass tube that has not received stress or that has not been worked on by a glassblower. Therefore to save time, simply pass the Tesla coil around areas where glass sections have been joined (see Fig. 7.58). If there is a two- or three-fingered clamp in an area that needs to be tested, the clamp must be removed to properly check the seal. To spark check for cracks around hooks placed near a joint, place a rubber stopper in the end of the joint and then open up the stopcock to evacuate that section. [Pg.448]

A metal wire (such as copper or nichrome) wrapped around the tip of the Tesla coil (see Fig. 7.57) and bent in a rightangle can extend your reach and/or reach behind glassware. [Pg.449]

Table 7.15 (found in several books77-79 or found as a similar table in other books80, 81 on vacuum technology) provides the colors of pure gases from discharge tubes, which have very little to do with the discharge from the Tesla coil because of the following conditions ... [Pg.449]

The distance between electrodes in a discharge tube is fixed, as opposed to the distance between the Tesla coil and ground (this distance can vary constantly from as little as several centimeters to many meters during leak detection). [Pg.450]

If you have items with glass-to-metal seals or metal supports you wish to leak-check with a Tesla coil, you can encase them in a bag. Initiate a discharge with the Tesla coil while filling the bag with a test gas, such as oxygen or helium. This procedure can help to verify whether or not there is a leak. However, it will not help locate the leak. To specifically locate the leak, you may wipe a probe liquid, such as acetone on a cotton swab, over the suspected areas while a discharge is main-... [Pg.450]

As stated before, the Tesla coil cannot be used on metal systems. If a leak on a metal system is large enough to prevent you from using a mass spectrometer (or you do not own a mass spectrometer), you may be able to use positive pressure to locate leaks in a vacuum system. Place the vacuum system under pressure with dry air, nitrogen, or helium up to about 60 psig. Then squirt a soapy solution on areas in question while looking for the formation of bubbles. This technique is the same that is used on all pressure systems and is even used by plumbers when installing gas pipe. [Pg.451]

The tesla-coil method for producing free radicals from solids. [Pg.526]

Passage of CF3OF over a cold-glow electrical discharge (from a vacuum "leak tester" of the Tesla-coil variety) immersed in a metallic vessel caused decomposition into COFj (0.38 mol per mol of CF3OF), Fj, CF, CO3, Oj and fluorocarbons [1649]. [Pg.589]

Just as in ordinary vacuum technology the primary instrument for leak detection in a glass ultrahigh vacuum system is the Tesla coil. Care is necessary in sparking graded seals. In the vicinity of field emission sources, the induction coil should not be employed since the emitter may be destroyed by arcing. [Pg.401]

Tesla, Nikola (1856-1943) Born in modern-day Croatia, the brilliant if eccentric Tesla came to the United States in 1884 to work for Thomas Edison s company and later for Edison s rival George West-inghouse (1846-1914). In 1891, Tesla became a naturalized American citizen. A physicist, mechanical and electrical engineer, and an inventor specializing in electromagnetism, he created fluorescent lighting, pioneered wireless communication, built an alternating- current induction motor, and developed the Tesla coil, variations of which have provided the basis for many modern electrical and electronic devices. [Pg.2015]


See other pages where The Tesla Coil is mentioned: [Pg.117]    [Pg.21]    [Pg.21]    [Pg.29]    [Pg.58]    [Pg.60]    [Pg.247]    [Pg.54]    [Pg.428]    [Pg.446]    [Pg.446]    [Pg.447]    [Pg.448]    [Pg.449]    [Pg.450]    [Pg.667]    [Pg.67]    [Pg.125]    [Pg.529]    [Pg.17]    [Pg.651]    [Pg.667]   


SEARCH



Tesla

Tesla coil

© 2024 chempedia.info