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given as a guide only – please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. EF86 Ratings. TECHNICAL DATA. Characteristics of a bogey tube: Electrical. Heater Voltage ( AC or DC) in Volts. +/ Heater Current in mA. +/- 10%. Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8.

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(PDF) EF86 Datasheet download

The low-frequency noise generated by a valve is most conveniently specified as an equivalent voltage on the control grid for a specific bandwidth. Collection JR Jacob Roschy.

The EF86 [1] is a high transconductance sharp cutoff pentode vacuum tube with Noval B9A base for fata applications. Unlike many pentodes it was designed specifically for audio applications, low noise and low microphony being claimed advantages, although a rubber-mounted vibration-resistant base was still recommended. Its design is low noise and anti-microphonic. The EF86 was used in many preamplifier designs during the last decades of vacuum tube hi-fi development.

Tesla; Praha, Bratislava etc.

EF86 @ The Valve Museum

Collection of Stig Comstedt S. This exhibit was made by Mullard who designed shret EF The EF86 is the standard early stage audio pre-amplifier valve.


Collection of Marco Lagendijk NL. 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.

EF86 – Wikipedia

From Wikipedia, the free encyclopedia. Care in the design of the valve to ensure that the wf86 structure and its mounting are as rigid as possible has reduced the microphony of the EF86 to a very low level. Collection of Daniel Consales D. The full Mullard data sheet is available by clicking the valve name at the top of the page.

Collection of Ekkehard Pfau D. The rarely used EF83 is a remote-cutoff pentode [4] otherwise similar to the EF86; wheet remote cutoff variable mu makes it suitable for applications such as automatic gain control agc in tape recorders. Warning the PDF file is 3. For the EF86 under normal conditions, I.

Collection of Ottmar Rollmann D. This electronics-related article is a stub. You reach this tube or valve page from a search after clicking the “tubes” tab or by clicking a tube on a radio model page. Saba Meersburg Automatik 7 und Freiburg automatik 7 von Collection of Karlheinz Fischer D. In other projects Wikimedia Commons. Collection of Hermann Fleischanderl Dats.


The UF86 is identical with the exception of a Collection of Jacky Parmentier F. Collection of Karl-Heinz Entrich D. Type EF86 was first introduced in Articles containing potentially dated statements from All articles containing potentially dated statements All stub articles. Collection of Tor Steinnes N. Collection of Jacob Roschy D. Collection of Massimo Pedrina I. An industrial variant of the tube is known as Collection of Tomasz Szczesniak PL.

Collection of Reinhard Riek D. Collection of Ralf Meinke D.

Collection of Karl – Heinz Bossan D. Collection of Danko Tkalec HR. This has a synthetic rubber mount. At higher frequencies the effect of vibration is usually negligible on account of the damping provided by the chassis and the valve holder. Erb Analysis by original leaflets. This can be further wheet by centre tapping the heater to earth.

Under these conditions the maximum hum level is 1. By using this site, you agree to the Terms of Use and Privacy Policy. In use it is recommended that it is fitted into a vibration resistant base. Collection of Christian Schaufelberger CH.