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Mar 27, 2020 · The EF86 is a high transconductance sharp cutoff pentode vacuum tube with Noval B9A base for audio-frequency applications.

Tubes are tested and test within normal factory tolerance for new tubes transconductance and anode current, and are tested for leakage and shorts. EF86 6267 Telefunken NOS Tubes Valves Germany | eBay

With high transconductance, low grid-plate capacitance, it is intended for service as either an RF or AF amplifier. These tubes have a pentode Two channels, one based on an EF86 Pentode and the other an ECC83 Triode, refine legendary vintage and boutique reference tones.

Nuvistors. The nuvistor was developed by RCA and it was first introduced in 1959. Nuvistors were the latest tube development at just about the same time as the introduction of the first integrated semi­conductor circuits. Apr 28, 2019 · (PDF) EF86 Datasheet download. The EF86 [1] is a high transconductance sharp cutoff pentode vacuum tube with Noval B9A base for audio-frequency applications. This exhibit was made by Mullard who designed the EF Vacuum tubes Guitar amplification tubes Electronics stubs.

The EF86 is a high gain pentode designed to amplify low-level audio signals. It is typically used as a preamp in audio equipment and instrument amplifiers. Because of its design, the EF86 is much more sensitive than other common preamp tubes like the 12AX7, and achieves more gain.

May 23, 2018 · BEFORE YOU BUY A TUBE TESTER! Nuvistors. The nuvistor was developed by RCA and it was first introduced in 1959. Nuvistors were the latest tube development at just about the same time as the introduction of the first integrated semi­conductor circuits. The EF86 is a high gain pentode designed to amplify low-level audio signals. It is typically used as a preamp in audio equipment and instrument amplifiers. Because of its design, the EF86 is much more sensitive than other common preamp tubes like the 12AX7, and achieves more gain.

Unfortunately it is not so simple for a thermionic valve. Its actual voltage gain in a circuit can be varied by a number of different factors, including Va, which is the actual voltage drop across the valve; Ia, the anode current, and for pentodes even the screen voltage, since this also affects anode current.

Jan 14, 2020 · EF86 Datasheet. The EF86 e8f6 used in many preamplifier designs during the last decades of vacuum tube hi-fi development. In high gain applications such as tape recording care should be taken in siting the valve, particularly when a loudspeaker is present in the same cabinet or where a motor is mounted on the same chassis.

Nov 04, 2015 · Transconductance is a property of certain electronic components. Conductance is the reciprocal of resistance; transconductance is the ratio of the current variation at the output to the voltage ... Aug 01, 2019 · The EF86 is a high transconductance sharp cutoff pentode vacuum tube with Noval B9A base for audio-frequency applications. Retrieved from ” https: The full Mullard data sheet is available by clicking the valve name at the top of the page.

Nothing like EF86. It's a variable transconductance pentode for applications in AGC (Automatic Gain Control). Makes a decent compressor on its own though. If you can get two of them to match closely you can strap them into triode mode and make a pretty good replacement for the 6386 dual triode used in a certain classic compressor.

One EF86 VALVO Tube. EF86 Application Data. Codes: Type code 8Y3 = EF86/6267 Factory/Date code D0C3 = Hamburg, 1950. Plate Current. Plate Current (Ip). Warranty applies.

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Aug 21, 2019 · The EF86 is a high transconductance sharp cutoff pentode vacuum tube with Noval B9A base for audio-frequency applications. In high gain applications such as e86 recording care should be taken in siting the valve, particularly when a loudspeaker is present in the same cabinet or where a motor is mounted on the same chassis.

May 23, 2018 · BEFORE YOU BUY A TUBE TESTER! The EF86 is a small signal pentode on a 9 pin base. Its high gain and low noise and microphonics (relative to other small pentodes) make it uniquely suitable for small signal audio frequency applications like microphone and phono preamps. It also makes an excellent triode (screen connected to the plate). .