as a guide only – please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. ECC85 Ratings. Page 1. Page 2. Page 3. ECC85 Datasheet PDF Download – Double Triode, ECC85 data sheet.
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The first letter or letter pair, in the case of a dual-system device indicates the general type:. For phototubes and photomultipliers, the second element is a sequential number and then a letter code identifying vacuum or gas fill and the type of cathode.
Retrieved 8 December Later special-quality tubes had not base and function swapped but were assigned a 4-digit number,  such as ECC or ED, the first digit of which again denoting the base:. Early types were shielded versions of tube types already datadheet use. The Majestic numbers of these tube types, which are usually etched on the tube’s base, have a “G” prefix for G rigsby- G runow and an “S” suffix for s hielded.
You will find thousands of tubes or valves with interesting links.
Retrieved 19 August A few special-quality tubes did not have a standard equivalent, e. The following letter indicates eatasheet filament or cathode type, or the fill gas or other construction detail.
ECC85 Datasheet, PDF – Alldatasheet
It consisted of one or two letters designating system type andoptionally, type of cathodea hyphen, then a sequentially assigned number with up to 3 digits. This was phased out after datashet Mullard adopted the Mullard—Philips scheme. Retrieved 19 November Pro-ElectronBrussels, Belgium. Structure and usage . Collection of Egon Strampe D. Grigsby-Grunow did not shield rectifier tubes except for type efc85 listed below or power output tubes. Three- and four-digit numeral-only systems were maintained by R.
Retrieved 4 March Retrieved 25 December Retrieved 14 January There is another designation system for professional tubes such as transmitter ones. This system prefixes a three- or four-digit number with the letters “CV”, meaning “civilian valve” i.
They were usually special-quality versions of dataasheet types. Wikimedia Commons has media related to Vacuum tubes and Gas discharge tube.
TDSL Tube data [ECC85]
In some valve part number series, the voltage class of the heater is given in the part number, and a similar valve might be available with several different heater voltage ratings. Vacuum tubes Electronics lists Gas-filled tubes. Machlett LaboratoriesInc.
Retrieved May 30, Special-quality cold-cathode “Z” tubes had a different function letter scheme. Used in s home radios powered by dry cells filaments and storage batteries B-plus voltage.
Media related to Philips gas discharge tubes at Wikimedia Commons. The E91H is a special heptode with a passivated third grid designed to reduce secondary emission; this device was used datashwet a “gate”, allowing or blocking pulses applied ecc5 the first, control grid by changing the voltage on the third grid, in early computer circuits similar in function to the U.
These tubes were made for home storage battery receivers manufactured during the early to mids.
ECC85 Datasheet PDF – Philips
Collection of Reinhard Riek D. Antique radios, Old Time Radios. Rundfunk- und Fernmelde-Technik desv was the brand of a group of telecommunications manufacturers in the German Ddatasheet Republic.
Cumings 8 June