Type 6j7 is a contemporary of the magic three and almost as ubiquitous. If you have you probably understand my interest in a lower cost substitute replacement. Franks electron tube pages tube number systems tube data. I know the 6j6 was prone to crosstalk between the triode.
I use these tubes a lot in my diy stuff because they are so cheap and plentiful but have never run across a set that look like the iecs do. With almost datasheets and the visitor counter indicates over 4000. This rat ing is app icable wnen the duration of the voltage ptnse does not exceed 15 per cent of one vert ical scanning cycle. Im used to them looking like the one in the first pic, whats with the second one. I felt that the soundstage limitation probably stems from the use of a single regulator and so the regulator was rebuilt as a double unit. If you have you probably understand my interest in a. I used 105 v from a vr tube at first, later the allinone supply described above, which proved very convenient. The one we will begin with here appears in rca tube manuals numbers rc20 through rc30 spanning the years 1960 through 1975. Double anode rectifier kenotron for voltage rectification.
Furthermore, we both feel that the ecc99 is a better sounding tube than the venerable 5687 and that the extra gain would be useful. Galls bottled 6sj7s always seem much noisier than the metals, at least in my experiences. The 6j5p pentodes are miniature devices enclosed in glass bulb and are provided with a sevenpin base, rigit leads and an indirectly heated oxidecoated cathode. But then were are talking very old technology that has sat around for quite a while, so i can be a bit of a crap shoot either way. Ive seen the ads saying the 6ju6 tube is a substitute for the 6bj6 tube used in the drake transmitter equipment. They are good quality and found in many chinese amps and preamps. These specifications are provided asis, with no warranty of any kind. The shuguang chinese 6j8 is direct replacement of ef86 6267. Bold designators are close or identical, italic designators are different ratings, different pinouts or different filament voltages.
Double triode, 6h8c datasheet, 6h8c circuit, 6h8c data sheet. As of 3505, i have finished scanning the general section, receiving tubes part 1, receiving tubes part 2, miscellaneous, specialpurpose receivingtype tubes, thyratron, ignitron, and glowdischarge tubes, and most of the transmitting tubes, as well as all. Of the two tubes on test, the one presented is the weaker, although still matching original curves. Tube 6a8g or rohre 6a8g id2688, pentagridconverter heptode, octal int. The primary use is as a class a voltage amplifier with resistancecapacitance coupling. Etc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors.
The loop creates a localized charge field that when catalized by the chemical in the silver splotch, burns up excess gas molecules that may have leaked inside of the tube. Although originally designed as a detector its linear characteristic and good internal shielding cf. A synopsis of the basic mathematical relationships governing audio transformer electrical design with an example of the design for a 300b direct feed dc current and presentation of underlying theory. Have you priced a matched pair of 6jb6s for your drake. The red rca 5693s were designed be a much, much more rugged tube with a life span of 10,000 hours. This chinese ef86 6267 tube type is commonly called a 6j8 tube in china.
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. The 6j1p 61 highfrequency shortcharacteristic pentode has been designed for h. The 6j5 is a generalpurpose triode designed for use as a detector, amplifier or ose. Using the pentodetriode tube as the amplifierphase splitter. Using the pentodetriode tube as the amplifierphase splitter over the decades many different ways have been developed to produce the two out of phase signals to drive pushpull power output amplifiers. Wcox056107b watercooled packaged chillers with helical. Use of these parameters shall be entirely at the users own risk. Substitute data application 9dx preferred substi tutes subs ti tutes 6ly8 6eb8 6w8 6gn8 6je8 neonoval type with frame grid pentode used in color and bw tv receivers. Three electrode gas tube surge arrester sankosha u. Watercooled packaged chillers with helical rotary compressors installation, operation, and maintenance instructions form 6186 wcox056107b table of contents. I am working on scanning and placing on this page the entire rca hb3 tube manual. This is a suitable replacement for any 6j5 6j5g 6j5gt 6j5wgt triode tube type.
Cambridge international as and a level chemistry 9701 cambridge international as and a level chemistry 9701. If you need more than the quantity available, please email us at. Test results using the 6ju6 tube as a substitute for. The classic envelope is 36 mm in diameter and, excluding the io base pins, is 99 mm tall. The mullardphilips type ef37a, for many years the standard british lownoise audio pentode, is really a 6j7g under another name. The triode is used as a voltageamplifier or sync separator tube, and the pentode is used as a videoamplifier tube. Description the 6j5p 65 hightransconductance pentode has been designed for h. The tube used as the example is the 6sj7, but any sharpcutoff pentode will do, such as the miniature 6au6. Tv tube, 43cm diagonal, magnetic focusing and deflection, white fluorescence, pentode system, 90 degrees. This allmetal tube is a direct copy of original us 6sh7, built since mid30s. Pentode mode, ug280v the above chart is for ug2100v. 2016 specimen data booklet pdf, 825kb 2016 specimen paper 2 pdf, 263kb 2016 specimen paper 2 mark scheme pdf, 236kb 2016 specimen paper 3 pdf, 276kb. The 6j1p pentodes are miniature devices enclosed in glass bulb and are provided with a sevenpin base, rigit leads and an indirectly heated oxidecoated cathode.
It was for two decades the international standard valve for audio amplifier input stages and audio systems generally. Tube 12jq6 tube beam pentode with integral diode 1800rfparts 18007372787 17607440700 usa. Cambridge international as and a level chemistry 9701. Links to audio web sites, parts suppliers, tube data search and more. Octal, io k8a, usa 1935 and frequency converter shown. It makes things very easy if you have four dmms for the various measurements.
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