LBA - Your
Vacuum Capacitor Store!
Vacuum Capacitors Fixed & Variable
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Comet and Jennings Vacuum Capacitors
The LBA
Technology vacuum capacitors store maintains a large stock of all types of RF capacitors, both vacuum
and mica capacitors. While LBA is a factory dealer specializing in COMET and JENNINGS fixed and variable vacuum capacitors, we
can supply virtually any style, value, or manufacturer’s product on special
order. Typical of other brands supplied are Meiden, Sangamo, and Cornell
Dubilier. We provide fast quotes and worldwide shipping.
The high quality vacuum capacitors we stock and sell typically have capacitances from 3 pF to 6600 pF, and peak test voltages to 100 kV at 1000 amps. These include both fixed and variable styles. A full line of capacitor accessories such as cylometers, insulators, corona rings, and mounting hardware is available from LBA.
Vacuum Capacitor Applications
Vacuum capacitors are used in a wide variety of applications that require the generation and management of high power radio frequency energy. The vacuum capacitor is extremely stable in electrical characteristics, has extremely low
internal dissipation factor (loss) and withstands electrical overloads, such as lightning,
with less damage than
other types of capacitors. The vacuum capacitor is a key component in high frequency RF generators, industrial RF process applicators and antenna systems operating from low frequency through VHF, at power levels reaching and exceeding 1,000,000 watts. Both air-cooled and water-cooled vacuum capacitors, in fixed and variable styles are used.
Vacuum capacitors are employed in broadcast transmitters for long wave, medium wave (MW or AM), short wave, and VHF (FM and TV). They also serve in broadcast antenna systems, particularly in AM directional antenna phasing systems, diplexers, triplexers and line tuning units.
Vacuum capacitors find wide application in industrial applications of radio frequency energy. High power RF systems are found in RF dielectric heating devices such as RF welders, radiofrequency sealers, RF process heating such as drying and baking ovens. The ubiquitous vacuum capacitor finds frequent application in such medical RF areas as MRI, CAT scanners, RF surgery, and high power particle accelerators. High power RF devices also use vacuum capacitors to help generate RF energy for laser systems, plasma generators, semiconductor foundries, research RF applications, and more.
Comet and Jennings Vacuum Capacitor Equivalency Table
This replacement list shows the COMET vacuum capacitor types needed to replace other common units. In some cases the COMET vacuum capacitor may not be 100% equivalent. Data sheets, including outline drawing, capacitance and current curves are available on request from LBA Technology. For other vacuum capacitor values, contact LBA Technology.
Jennings Capacitor Type:
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COMET Capacitor type:
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Custom services available at LBA:
LBA Technology has the facilities and experience to design, fabricate, and test virtually any vacuum capacitor assembly or subassembly. LBA is one of the most respected manufacturers of high power RF equipment, accessories, and super power components used by broadcasters worldwide, with over 25 years experience. Our RF coil fabrication group can provide RF inductors to a wide range of values and current ratings. Our facilities are geared to handling of large electromechanical assemblies, and we have extensive test capabilities –extending to above 1000 MHz and to 50 KV RMS.
The large radio frequency energy fields developed by high power RF equipment pose RF safety concerns, as well as OSHA, FCC, and other agency requirements for worker protection. LBA has years of experience auditing and mitigating RF hazards. That expertise is available to all users of high-power RF devices.
Other Resources:
Vacuum Contactors for HV and RF
Medium Wave RF Components
Order all of your vacuum capacitors and contactors from LBA
Not in stock?
LBA guarantees factory direct delivery, shipped worldwide.
For orders, quotes, or tech assistance,
use our
Or
Contact Byron Johnson, byron.johnson@lbagroup.com
Call 800-522-4464 or 252-757-0279
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3400 Tupper Drive
Greenville, North Carolina 27834
800-522-4464 / 252-757-0279 / Fax 252-752-9155
Email:
Copyright 2009. LBA Group, Inc. All Rights Reserved.