February 8, 2021   |   by admin

The Original grounded grid triode introduced in the early s. Now obsolete part number. Power dissipation: w. EIMAC Z. Later version of Z. The EIMAC Z is a compact power triode intended to be used as a zero- as high as twenty times can be obtained with the Z in a cathode-driven. Tube Z or Röhre Z ID, Transmitting Triode, air cooled, SPECIAL TUBEBASE in Brand: Eimac (brand name) Typ ZG mit Graphitanode.

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Filament voltage, as measured at the socket, should be maintained within the range of 4.

Design equipment so that no one can come in contact with high voltages. The Elmac Z is a compact power triode intended to be used as a zero-bias Class AB 2 amplifier in audio or radio-frequency applications. Register for a free QRZ account. It’s a gamble though Important Rules Have you read our Swapmeet Rules? Make sure that you’re familiar with the rules before posting or replying in this area. N5FUNMay 7, Tube dimentions Socket dimentions.

Sincere effort has been given to provide an accurate and correct replication.

Eimac, 3-500Z

These current variations cause no difficulty so long as the circuit maintains the correct voltage in the presence of the variations in current. Given the duration of time that I’ve owned them, and that they likely sat around for a few years unused as spares from the simac now-SK owner, I would fully expect you to getter these before use.

  IEC TS 62239 PDF

Adjustment of the rf grid voltage to obtain the specified plate current at the specified bias and plate voltages is assumed. Not would of gave Your name or email address: The grid current which results when the desired plate current is obtained is incidental and varies from tube to tube.

The Eimac tubes have never been installed or tested and due to age and possible gassing issues your are buying them at risk and I will not take returns. The Rotron “Spartan” fan rpm is also suitable, as is a 3, 3 inch squirrel cage blower 31 00 rpm all cases, the only criteria of proper cooling is the temperature of the tube seals Tube temperatures may be measured with the aid of temperature sensitive paint, spray or crayon.

A flexible connecting strap should be provided between the heat dissipating plate connector and the external plate circuit. Not open for further replies. Make sure that you’re familiar with the rules before posting or replying in this area. But like all elmac in life, there are no guarantees to that and no way for me to test otherwise.

The next 2 digits would be week within the year. Shipping to Russia is more than the price offered and customs import is too difficult. Register for a free QRZ account.

When handling a glass tube, remember that glass is a relatively fragile material, and accidental breakage can result at any time. The only discernible identification numbers are 4-digit numbers in red ink on eimxc tubes- one tube is 90XX, one tube is 87XX and one tube is 70XX.

Local pickup is welcome and I will except PayPal, money order, cash.


This week I completed building it and am now testing and have a few minor items to adjust. Thoriated Tungsten Voltage 5. I’m open to other interesting stuff but I’d like to keep the lot of 3 tubes intact as someone who gets them can getter them all, test them, eeimac likely wind up with 1,2, or 3 good tubes.

Ottar Kvindesland

Go take a chance! If this procedure is followed, there will be little variation in output power when the tube is changed, even though there may be some variation in grid current.

K7JOEJun 17, My email address is good on QRZ. Not open for further replies. These figures may change without notice as the result of additional data or product refinement.

3-500Z Tubes

Our moderators review every post in this forum and will flag or delete those that do not conform. However, no guaranty is provided for the consequences of any errors on this page, or anyone linked from here. This page has ben scanned and OCR’ed from the Eimac data-sheet.

K1FBIJun 17, In addition, grounded-grid operation is attractive since power gain as high as twenty times can be obtained with the Z in a cathode-driven 3-50z0. Breakage will result in in flying glass fragements, so safety glasses, heavy clothing, and leather gloves are recommended for protection. N5FUNMay 10,