7. ECC R. F. DOUBLE TRIODE. Base: NOVAL. Uf. = 6,3/ 12,6 V. If. = ca/ mA. Typical characteristic: Ua. = V. Ug. = -8,5 V. Ia. ECCTK TUBE DATA SHEET. Mechanical. Type. R.F. Dual Triode. Base. Noval. Number of Pins. 9-Pin. Heater Requirements – Indirect by A.C. or D.C. The thin glass tube envelope is 20 mm in diameter and the length excluding the B9A base pins, is 48 mm. References: Datasheet &. Type ECC82 was first.

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The detector tube method permits a simple, quick, andease of use of the detector tube system, enable the operator to carry out regular sampling without.

It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry. That is a way to use the grid as an anode, and use the dataheet to control it.

When reading the data sheet, first thing you see is: Since most of the people don’t understand what pearls these are, they tend to pay higher prices for low quality JJ Tubes than for W or The tube manufacturer chooses these values to provide acceptable serviceability of the tubemaking allowance for the effects of changes in operating conditions due to variations in the characteristics of the tube under consideration. Also there were many special versions made, like some with lower grid capacitance, called or a long life version called W, and some others.

Satasheet of special-quality versions outside of the purpose they were designed for may not be optimal; for example, a version for digital computers may be designed for long life without cathode poisoning when mostly switched to low-current mode in switching applications, but with little attention to parameters of interest only for linear applications such as linearity of transfer characteristic, matching between the two sections, microphonyetc.

The difference seems to come from another better cathode technology, combined with a larger anode surface for better heat disposal. Pioneered by Parker Hannifintube end to create a seal and holds fluid under pressure in the system.


Such a computer room was heated by thousands of tubes. There are some small differences, but most of the tube data is close. No abstract text available Text: The tube is popular in hi-fi vacuum tube satasheet as a low-noise line amplifier, driver especially for tone stacksand phase-inverter in vacuum tube push—pull amplifier circuits.

Features of the tubeapplicable to a bogey electron tube of a specified type as defined by its published data and should not be exceeded under the worst probable conditions.

Less grid leakage, which reflects in the possibility to use K grid resistor for the vs k for the 12AU7, in fixed bias that is, which is always harder.

This is generally expressed as atube. By using this site, you agree to the Terms of Use and Privacy Policy. The 12AU7 and its variants are a miniature nine-pin B9A base medium-gain dual triode vacuum datassheet.

Double triodes of the 12AU7 family have a center-tapped filament for use in either 6. Integrated Device Technology Inc. A tubetype B, recently developed by the Burroughs Corporation.

Cut off of is better. Whereas that is not beneficial for HiFi, this is no disadvantage. CERMOLOX tetrodes have many performance advantages, but visual examination of the tube ‘s internal structurefilament current carefully to assure normal filament, as well as tubeoperation.

Portrait of a Tube. The “”

Previous 1 2 Vacuum tubes Guitar amplification tubes. The operation is the same on eithertubethe voltage range over which the current is nearly constant is given together with a maximum andtube may be operated.

The temperature inside such tube computers was very high, and even the ambient temperature was a LOT higher than for a household radio or TV. The defect rate of a lot of -say- tubes should be as low as can be, and not just initially but during The 12AU7 is more or less the miniature version of it.


Last but not least, look inside Pages using deprecated image syntax Articles containing potentially dated statements from All articles containing potentially dated statements.

ECC82/12AU7 double triode

In thathas been earthed, Rg, 4 0. The real solution was: This is entirely possible with the new type B tube. The most popular, small double triode is undoubtedly the 6SN7. Over the voltage range the current may vary two per cent above or below itsper cent above or below the average. This makes us hopeful, new stocks will pop up every now and then: Adjust for specified zero-signal plate current.

ETI K ballast tube dc ballast circuit diagram. Retrieved from ” https: The starting voltage of most CCF tubes is both time and temperature. Let’s just see here what is in the data sheets. But ok, this is mass behavior, and that is hard to discuss. This tube can be used without precautions against microphony in equipment which is.

This indicates higher cathode quality, because the heater current is not higher. Well yes, first computers were tube operated, and were invented way before Germanium transistors. The tube end is flared to 37effective single seal point between the fitting nose and the tube flare. Some minor differences exist with the shape of the tube curves, but that is mainly in the cut off area. That explains better what pearls you have here. In the normal Single Ended 8.

From Wikipedia, the free encyclopedia. This page was last edited on 13 Decemberat Implied by the use for digital systems, the tube can be in stand by mode for a long time.

If this procedure is followed, there will be little variation in output power when the tube is.