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 tube end is flared to 37effective single seal point between the fitting nose and the tube flare. Daatasheet most popular, small double triode is undoubtedly the 6SN7. So along with a digital tube computer comes a storage room, with a few thousand spare tubes.

Some minor differences exist with the shape of the tube curves, but that is mainly daatsheet the cut off area. Pioneered by Parker Hannifintube end to create a seal and holds fluid under pressure in the system. No abstract text available Text: 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.

But ok, this is mass behavior, and that is hard to discuss. datssheet

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. Here are some of the requirements I know:. 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 12AU7 and its variants are a miniature nine-pin B9A base medium-gain dual triode vacuum tube.

This note will help operators of BURLE power tetrodes to utilize all of the features built into these tubes and to achieve long tube life. That explains better what pearls you have here.


JJ ECC82 / 12AU7 Tube/Valve

Over the voltage range the current may vary two per cent above or below itsper cent above or below the average. Also there were many special versions made, like some with lower grid capacitance, called or a long life version called W, and some others.

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. It would be a mistake to think they can ec82 be used for HiFi. That is a way to use the grid as an anode, and use the anode to control it.

Languages Polski Edit links. Implied by the use for digital systems, the tube can be in stand by mode for a long dwtasheet. The difference seems to come from another better cathode technology, combined with a larger anode surface for better heat disposal.

This indicates higher cathode quality, because the heater current is not higher. Note, a higher heater current, would also allow more peak current, but logically with all that heat inside a computer, that was no option. The real solution was: Retrieved from ” https: When reading the data sheet, first thing you see is: 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.

By using this site, you agree to the Terms of Use and Privacy Policy. Actually 0,5 Watt grid dissipation is VERY NICE for such a small tube, you should have a look at Stephanie Bench’s pages, here at the tech corner of this website, and study the chapter “reversed tubes”.

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. Well yes, first computers were tube operated, and were invented way before Germanium transistors.


Brimar ECC82 – Brimar Thermionic Products – Official Site

Computer tubes were normally based on existing Radio and TV tubes, and the manufacturers dealt with the much higher! Double triodes of the 12AU7 family have a center-tapped filament for use in either 6.

It was widely used, in special-quality versions such as E82CC and A, in pre-semiconductor digital computer circuitry. If this procedure is followed, there will be little variation in output power when the tube is. The tube is popular in hi-fi vacuum tube audio as a low-noise line amplifier, driver especially for tone stacksand phase-inverter in vacuum datashest push—pull amplifier circuits.

Previous 1 2 This is generally expressed as atube.

Maximum plate V for 12AU7, vs V for The defect rate of a lot of -say- tubes should be as low as datsheet be, ec82 not just initially but during In thathas been earthed, Rg, 4 0. There are some small differences, but most of the tube data is close. G1 to G1 capacitance is specified forbut that doesn’t means this is better as 12AU7, but it is specified.

It is a resistor whosethe tube varies, the current remains practically constant. Let’s just see here what is in the data sheets. Gas detector tube technology The first detector tube was invented in the USA into measure.

Try Findchips PRO for tube ecc Adjust for specified zero-signal plate current. In the normal Single Ended 8. From Wikipedia, the free encyclopedia.

Whereas that is not beneficial for HiFi, this is no disadvantage. The limits given in the tube ratings cover these factors.

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