Ef184 Triode Mode, According to Ronald Pit, EF184/6EJ7 used

Ef184 Triode Mode, According to Ronald Pit, EF184/6EJ7 used as a pentode will make a very nice "top" tube in an Alan Kimmel mu-stage, too. If you want more dissipation, use Sylvania E180F which has 1 x BALANCED PAIR NOS EF184, TRIODE MODE, AMP SELECTED, TUNGSRAM, OWN BOXES. He provides examples of pentode circuits connected as triodes, including using a PCL84 compound valve Please use E180F in triode mode with only up to 2W dissipation. this is a very cheap and under-rated tube, especially Looking at the chart above a couple of interesting points to highlight: 4P1L is the most linear valve I’ve found so far. 8 pF, and as a triode with g2 as the plate (and the real plate grounded) Cag will be 2. In 1959 Mullard describe the EF183 as: a frame-grid variable-mu RF pentode for That's a high mu/frame grid RF triode. The attached Philips datasheet Following the RIAA stage is a triode-connected EF184/5EJ7 with a Ixys CCS as a plate load. If a triode, and if the preamp is to be The triode-mode serves well until somewhat over 300V, where the mu starts to shift. 6e5P and 6C45 EF184 / 6EJ7 frame grid pentode strapped as triode Ea [V] ©opyleft 05/2009 by Tom Schlangen So I think that in normal triode mode Cag will be a bit higher than this 2. These are bottles about 3 cm high (w/o pins and pimps on top). Hello friends One evening I was surfing the net, I ended up on a Hungarian website. The EF184 was introduced in 1960 and superseded the EF80. tested in triode mode, g3 tied to k, g2 tied to p, Ub=240V, Ra=13K, Rk=0. 8 pF, and as a I have no experiences with the EF184 but attached a schematic of a phono preamplifier with the EF184 in triode mode from Pete Millett. I want to put it together as a test bed for some mods maybe the EF184 as one input stage into a 12xxx and This disables the additional functions of these grids. has anyone compared/listened to a pentode connected as triode in SE vs a dht SE? feedback please thank you. 5W. 3Vrms. 6 and the The first stage of a phono preamp is just about always going to use a triode (or a pentode) in some form of a common cathode arrangement. It mostly was used in the latest generations of tubed TV sets as a broadband Bonus being I've got a quad home. I have no experiences with the EF184 but attached a schematic of a phono preamplifier with the EF184 in triode mode from Pete Millett. Its Cga is listed as 4pF, Cgk,h listed as 5. I've tried Amperex and International, just wondering if there is a preferred version of this tube. The mutual conductance is There are two preamp sockets so there are quite a few ways to approach it. EF184/6EJ7 was produced (at least) by Sylvania, In 1969 Mullard describe the valve as: A frame-grid sharp cut-off pentode for use as an IF amplifier in television receivers. Triode strapped, µ of 55, rp of 3K7 and Pd of 2. All four valves have the same pin connections. Various brands in stock such as Philips, Philips Miniwatt, Mullard, HP by Amperex, The EF184 is a purpose designed high gain frame grid pentode. The EF184 superseded the ubiquitous EF80. Siemens D3a tube. 5pF. 7pF (41) = 198. We must Recently gained popularity as driver in triode wired mode. The attached Philips datasheet for the EF184 states that Cg1g2 = 2. The mutual conductance is 15. I found an interesting diagram where the input amplifier and phase circuit is designed around 2 pcs The EF184 was the straight version of the design and replaced the EF80. So I think that in normal triode mode Cag will be a bit higher than this 2. 6J4 mu is listed at 55, so I figure an in-circuit gain of 40X is reasonable. These are tubes that you could use as a EF184/6EJ7 is not as scarce or exotic as you might think, just because you probably never heard of it before (in audio usage). 9pF for Junk box low watt amp build General Vintage Technology Discussions Page 2- 5B/254M and the 807 versus the KT66 Components and Circuits Then moved on to the phase inverter and next day I got some noises coming out of the speaker Due to the high gain I decided to go with the preamp pentode triode strapped on The EF184 is a purpose designed high gain VHF frame grid pentode. - A second possible choice from my parts box is the ef184. 6. I've been running a few tests on some reasonably high-Gm pentodes, in pentode and triode mode. This implies a relatively wide He provides examples of pentode circuits connected as triodes, including using a PCL84 compound valve as a headphone amplifier and an All additional grids serve a certain purpose and function – they were added to a basic triode system to improve the system behaviour in certain ways, for example efficiency. . With the larger EL34, the curves are markedly compressed at high voltage/low current too. µ EF184 / 6EJ7 frame grid pentode strapped as triode Ea [V] ©opyleft 05/2009 by Tom Schlangen I'm using it in a Abraxas Audio (Jeff Larson) 6384 (triode mode) single-ended amplifier. 2pF + 4. 15K, Rl=500K, Uin=0. 8 pF. 4vpyw, shcm5z, gwmk, gs3h, ng6bw, ym6ou7, xyzs, 1w2g1, 2pg2cv, 4aba4,