Ef89 tube data sheet

Mullard say that the ecf80 was designed for operation up to 220 mhz. Quite a lot of folks listened to it at etf, and i had nobody say anything about the noise, nor. The noise that is there is a mostly tube noise, as opposed to 60hz hum or buzz or other sounds that are annoying. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance. The thin glass tube envelope is 19 mm in diameter and, excluding the b9a base pins, is 52 mm tall. All tubes new, military equipment and have otk mark. It is a small, sturdy, glassoctal heater cathode type used as an af power amplifier and modulator and as an af power amplifer and oscillator. The switcher controller is a simple switcher part from national semiconductor. Svetlana ef86 highperformance audio smallsignal pentode t. The suitability of the 6dj8 for audio tube audio store. This beacuse a plate resistor would translate in a max value of 10 kiloohms with. I really like the way it sounds, but as you might expect, using a pentode in the front end is not the quietest thing you can do. A perfect tube with no excess or 1f noise has a minimum grid noise resistance of rn 2. 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.

This data is scanned and may contain errors caused by the ocr software. With a classic design i mean a smaller valve for voltage amplification and a power valve driving the output transformer. Biased at 2 volts and running at 100 volts means about 14ma plate current which suits my power transformer. First the v72 was reequipped with this state of the art telefunken ef804s audio tube made in their berlin and ulm production. Svetlana ef86 highperformance audio smallsignal pentode he svetlana ef86 is a glass envelope miniature pentode intended for highquality audio preamplifier service. To get the needed voltage drop from the 250 volts supply i decided to go for a ccs. It was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. It is very similar electrically to the octal base ef37a and the rimlock base ef40. Recent listings manufacturer directory get instant insight.

Ef183 datasheet, cross reference, circuit and application notes in pdf format. Be aware that the tube makers control the mu more tightly than the gm and rp, so dont rely too heavily on the gm. Brimar data sheets show this triode pentode valve as designed for vhf frequency changer use. Beginning in the 1950s mullard was producing hifi amplifiers that used the ef86 as a highgain input tube and vox was doing the same in their guitar amplifiers. This tube may be used with full input up to 60 mhz and with reduced input up to 175 mhz. Theres no word on what these tubes will be used in and theres no data sheet. E80cf7643 amperex pq telefunken 6bl8 substitute the e80cf is a special quality mediummu triodepentode. The triode is the oscillator and has to produce 5 v pkpk signal. The tube is manufactured by the oktjbr, vinnitsa, ukraine.

Here is a quote from an old amperex data sheet for the ef86. Also see 7643e80cf mcintosh mr67 tuner to buy 7643 amperex e80cf7643 amperex germany pq nos made by valvo hamburg germany original boxes 19611966 recommended pairs e80cf. Barczynski, who offered me a lot of diskspace online, i can put all my datasheets on the web. Subminiature transmitting pentode for use in radio sondes, 95108 datasheet, 95108 circuit, 95108 data sheet. You can use the search to find service types or go to the service type lists that you can access from the page more tube related stuff. If you push a 6dj8 to 10 or 15ma, the result is a gm of 12,000 or so. The 6883b 8032a 8552 vacuum tube is a small, sturdy, glassoctal heater cathode type used as an af power amplifier and modulator and as a rf power amplifer and oscillator. This new tubechip thing was brought to life by korg, makers of fine musical equipment and noritake co. Datasheet of triodes, diodes, penthodes,tetrodes, vacuum tubes.

Rating is available when the video has been rented. Barczynski, who offered me a lot of diskspace online, i can put all my datasheets on the web 19991031 i discovered that scanning actual tubes is quite possible. The 6146w vacuum tube is a ruggedized military version of the 6146 family of tubes. The following list shows the tube types i have entered in my database, with exception of the service types e. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes, or discharge tubes. This would be mainly for radio as television receivers tended to use the pcfnn 300 ma valves. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications it was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. The following formula illustrates why this tube is so good on noise. This tube was mainly used for the aegtelefunken magnetophone production, but evolved into much of the professional studio equipment of the time. Tube ef 89 or rohre ef89 id841, vacuum pentode, noval, b9a and rfifstage shown.

Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. W hat started out as a classic single ended design transformed into a very good amplifier. Ive been working on a passive riaa pentode phono preamp. Ef183 tube tube ef183 socket noval 7z0022 noval 10010l 200f tube cathodique philips tube cathodique culot. Only a few types are still used today, mainly in highpower, highfrequency applications. Feb 11, 2016 rating is available when the video has been rented. Current production by tungsol, jj electronics, and electro harmonix, as well as various nos brands. Many industrial, military or otherwise professional tubes were also produced. Tubes with part numbers beginning with 6aq8 ecc85 tube are in stock and ready to ship. Aug 09, 2016 this new tubechip thing was brought to life by korg, makers of fine musical equipment and noritake co. Datasheet search site for electronic components and.

Philips, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The tube can be used without special precaution against microphonic effects, in amplifiers in which the input voltage is greater than 10 millivolts, when the tube is mounted in the vicinity of a 5 watt loudspeaker with an efficiency of 5% the vox ac4 is the only guitar amp. To view this site, you must enable javascript or upgrade to a javascriptcapable browser. Amplifier, ef89 datasheet, ef89 circuit, ef89 data sheet. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications. Franks electron tube pages foreign substitutes for american types this data is scanned and may contain errors caused by the ocr software.