6gh8a tube data sheet

When its run in circuits designed for 6550kt88kt90 tubes, the tungsol kt120 resists being overdriven and reliably delivers peak power. Vacuum tube 6gh8a, triode, pentode amplified parts. Mar 07, 20 tube audio amplifier troubleshoot repair and modification duration. The 1943, 1949 and 1959 sylvania tube manuals online. This increase gives the tube more headroom and a tighter response on the low end. Gec, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors. The following list shows the tube types i have entered in my database, with exception of the service types e. This tube has solid lows with warm bright mids and shimmery highs. The 6gh8a is a miniature tube which contains a sharpcutoff pentode and a mediummu triode. Complete tube data is in every single box, like big transmitting us wwii tubes. The valve is specified for multivibratortype line deflection oscillators andor agc amplifier and syncseparator functions. But looking at an actual tube with a magnifying glass, because of the opening in the plates it is possible to view finer parts of the structure in detail, such as the grid wire spacing. Each section has a separate cathode and is electrically.

Numbers shown in light yellow background are used in seriesstring configurations. If you cant find what you need here, try duncans tube data sheet locator. Double triode, 6h8c datasheet, 6h8c circuit, 6h8c data sheet. Ecf82 6u8 6gh8a 6u8a vf6,3v if450ma va250v vg2110v vg10.

The mods in the st70a increase feedback factor, allowing it to handle. Jjs rugged construction of this tube offers high reliability without any compromise to the sound. Numbers shown in light blue background are coldcathode tubes. Degassing your eimac 3500z and 4400a tubes duration. Nos tube specification sheet nos tube specification sheet. The 6gh8a is a triode pentode with separate cathodes designed for television receiver use. The triode is mounted at right angles to the grid axis of the pentode. The bad news is that the 7l99 vacuum tube is discontinued and is no longer available except as residual old stock at a very high price. With a plate dissipation of 60 watts, the tungsol kt120 is the most powerful tube in the 6550kt88kt90 family.

Vacuum tube 6gh8a, triode, pentode antique electronic supply. Audto bastcs iuly, 1990 page 3 new 6gh8a driver tubes for. Applications of the rca7199 triodepentode in highfidelity. Etc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. This note describes the special features of the rca7199 triode pentode, and discusses its application in hifi audio equipment. A pair of these tubes in pushpull configuration can deliver power levels of 150 watts or more. You can use acrobat for viewing and printing pdf files. Vacuum tube 6kv6a, beam power pentode antique electronic. Vacuum tube 6gh8a, triode, pentode miniature tube which contains a sharp cutoff pentode. Miniature tube which contains a sharpcutoff pentode and a mediummu triode.

The adapter is designed specifically for 6gh8a to 7199 applications. Here youll find manufacturers data sheets and curves for many popular and some not so popular electronic valve types. It is unclear whether the distortion is due to actual nonlinearity or reduced gm lowering feedback factor. The jj electronic e34l adds more power to a standard el34 due to its higher grid voltage rating. The aa8v 6x2 superheterodyne receiver local oscillator. Tube depot carries a selection of 7199 pre amp vacuum tubes. New old stock mil spec pre amp compatible tubes from sylvania, ge and other various brands.

Triode pentode, 6gh8 datasheet, 6gh8 circuit, 6gh8 data sheet. Thanks to max, the chance i have it, has increased considerably. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Construction refers to both basing size and the envelope hf means heater or filament voltage and current specifications. The eh7591a shows higher distortion and low tube tester gm. This single gain stage, of course, does not favor guitar amps and if employed in a guitar amp, would likely be found with a 12ax7 in front of them. This tube was the heart of the dyna st70 amplifier and our super seventy upgrade thereto. Tube audio amplifier troubleshoot repair and modification duration. General electrical, the tubes with other devices or elements by any purchaser of tubes. The a in the tube designation means that the tube has a controlled heater warmup characteristic, which is not a consideration here. I recently discovered that the popular 6gh8a tube can be used in this application as a direct plug in replacement. The aa8v 6x2 superheterodyne receiver mixer schematic.

The 6gh8 is a miniature tube which contains a sharpcutoff. The author has tried the adapter on a 6u8a as a substitution for a 7199, with good results. The thin glass tube envelope is 20 mm in diameter, and excluding the b9a base pins is 50 mm tall. Any dynaco owners using 6gh8a tubes instead of 7199. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup. If i had to choose between the jj and the eh, it might be the jj for the st40 and the eh for the st70a. Fortunately, the pin changes needed to use a 6gh8a as a substitute for a 7199 are the same as for a 6u8a. Tube 50hk6 or rohre 50hk6 id5792, vacuum pentode, miniatur7pinbase b7g, usa 1940 and poweroutput shown. Applications of the rca7199 triodepentode in highfidelity audio equipment. In this application either a 6u8 or 6u8a can be used. Each section has a separate cathode and is electrically independent. Rectifier 5y3gt filamentary twin diode construction. Audto bastcs iuly, 1990 page 3 new 6gh8a driver tubes. The 6gh8a is a mediummu sharpcutoff triodepentode, as is the 6u8a.

New 6gh8a driver tubes for the super seventy amplifier we have bad news and good news this month. Net tube data here youll find manufacturers data sheets and curves for many popular and some not so popular electronic valve types. Click to see all 6sn7 6sn7gt 12sn7 12sn7gt in stock. Herein you will find a collection of vintage engineering texts, vacuum tube datasheets, and other obsolete information, presented free of charge and without annoying advertisements. I have more than 100 pieces, most of them were made in 60s and 70s, this batch is from 1962 complete tube data is in every single box, like big transmitting us wwii tubes. Electronics 6gh8a page 1 964 6gh8a triodepentode description and rating the 6gh8a is, controlled to assure low interelectrode leakage, the 6gh8a is identical to the 6gh8. Tubes in the tube column are directly replaceable with tubes in the replacement column. Vacuum tube 6gh8a, triode, pentode miniature tube which contains a sharpcutoff pentode.