Ef184 tube data book

The design is capable of driving relatively insensitive headphones with a voltage of 700mv rms and a total harmonic distortion of 0. It was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. Svetlana ef86 highperformance audio smallsignal pentode he svetlana ef86 is a glass envelope miniature pentode intended for highquality audio preamplifier service. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. What could happen though so it seems is if you load up a amp with really high running tubes as compared to normal you might clip the preamp. The circuit designer is given maximum flexibility by having all electrodes brought to external pins. 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. Becoming an engineer supplier directory books events.

Full text of mullard data book 196566 internet archive. Biased at 2 volts and running at 100 volts means about 14ma plate current which suits my power transformer. Instrument accessories free delivery possible on eligible purchases. In addition to the data i have scanned and posted, if youre looking for data on a particular tube you should visit tsdl on duncanamps website, or franks tube data. 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. We do have stock of current production tubes from sovtek, tungsol, genal. Ive also posted sylvania tube manuals on their own page. I am currently using the ixys part muconnected, which gives a very low output impedance. Some of the technologies we use are necessary for critical functions like security and site integrity, account authentication, security and privacy preferences, internal site usage and maintenance data, and to make the. The ef184 is a very lownoise device it has a much lower equivalent noise resistance than most triodes, with a high and unusually linear transconductance.

This beacuse a plate resistor would translate in a max value of 10 kiloohms with. Svetlana ef86 highperformance audio smallsignal pentode t. Etsy your place to buy and sell all things handmade. Vacuum tube 6ej7ef184, pentode, sharp cutoff antique. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance. It is very similar electrically to the octal base ef37a and the rimlock base ef40.

Many files on this site, especially scanned documentation, are in adobe acrobat pdf format. To get the needed voltage drop from the 250 volts supply i decided to go for a ccs. With the wide variety of tubes that are in use there are many. The 6j51p pentodes are miniature devices enclosed in glass bulb and are provided with a sevenpin base, rigit leads and an indirectly heated oxidecoated cathode. Unlike many pentodes it was designed specifically for. Following the riaa stage is a triodeconnected ef184 5ej7 with a ixys ccs as a plate load. With almost datasheets and the visitor counter indicates over 4000. You can also find the right tyre to suit your riding style.

The 6f5p triodepentodes are miniature devices enclosed in glass bulb and provided with ninepin base leads and an indirectly heated oxidecoated cathode. This means that the voltage at the grid of the ef184 is. This is the amplification factor, and has nothing to do with overdrive. So if you have a 12ax7 you have 1 in and 100 out, a tube like a 12au7 is 1 in and 20 out. In a few cases, when the 1966 edition omitted graphics on obsolete tubes, i inserted scans from the 1948 ginkins reference book. Ef184 tungsram pentode audio tube at 4 ht on electols. This is a list of european mullardphilips vacuum tubes and their american equivalents. Franks data sheet site has curves for the 6ar6 and 6098 6ar6wa that should be close to the 6384, as the 6384 is the ruggedized version. The following list shows the tube types i have entered in my database, with exception of the service types e.

Tube ef 184 or rohre ef184 id3431, vacuum pentode, noval, b9a and rfif stage shown. Most postwar european thermionic valve vacuum tube manufacturers have used the mullardphilips tube designation naming scheme special quality variants may have the letters sq appended, or the device description letters may be swapped with the numerals e. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications. Domestic receiving tubes and their foreign counterparts by. This is done in case of equal tube type numbers for different tubes. The cascode is dc coupled to the phase inverter, via the voltage divider of 820k and 270k ohms. Receiving tubes and foreign equivalents data collected from the russian book. I was checking what fellow aaers would choose for a 6ej7 ef184 driver tube im using it in. This is my humble contribution to that warm and unique sound that the valves provide to our ears. Data book 196566 j j 1a sum mullard pocket data book 196566 edition 65 woisia. Buy set of 4 x 6j51p pentode tube, near equivalent of 6ej7ef184. Set of 4 x 6j51p pentode tube, near equivalent of 6ej7ef184. Maybe you want to update your audio amplifier, guitar amplifier, headset amplifier, jukebox or your tube microphone or any other audio equipment.

Nos tube specification sheet nos tube specification sheet. Typical valve tube audio amplifier that might be used today. Tube data in addition to the data i have scanned and posted, if youre looking for data on a particular tube you should visit tsdl on duncanamps website, or franks tube data. Basics how does a tube work vacuum tube electrodes diode valve tube triode tetrode beam tetrode pentode equivalents pin connections numbering systems valve sockets bases.

Quality russian 6j51p tube was made in ussr for the military equipment. I am working on posting the rca hb3 tube handbook on line on this. The underscore and these letters are not part of the tube type number. Description the 6f5p triodepentode is designed for operation in vertical sweep units of widely used television receivers. Tube 6bv7 or rohre 6bv7 id18549, double diodepentode, noval, b9a and poweroutput shown. The ef80 was superseded in the 1960s by the higher slope frame grid ef184 the ef183 being the variable. Andrew liked the sound of nostalgia electronics weekly. Buy the ef184 tungsram audio tubes pentode online on electols at best price for immediate delivery. Book depository books with free delivery worldwide. A framegrid sharp cutoff pentode for use as an if amplifier in television receivers. I foreword the milliard pocket data book is presented so as to provide easy reference to the valves, cathode ray tubes, semiconductor devices and components in the mullard. As an enthusiast of electronics, here is my repository around valves, hifi amplifiers and everything i found interesting to share related to music reproduction.

Preamp tubes nos and like new the best of the best. This is actually a radio frequency amplifier and it will handle audio frequencies with ease. The ef184 is a purpose designed high gain frame grid pentode. Here, you can find full details, technical specifications, advice on use and maintenance, everything a motorbike enthusiast needs. Ive been comparing ge and rca 5879 input tubes, as well as some miniature tubes. Information or data about vacuum tube or thermionic valve pin connections is always useful to have to hand. The equivalents for thermionic valves or vacuum tubes, including the diode, triode, tetrode. Another spot to look, which is especially useful if youre looking for replacement types and tubes with similar bases or characteristics, is the nj7p tube database.