EIMAC 3-500Z PDF

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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Show Ignored Content Thread Status: The Elmac Z is a compact power triode intended to be 3-500s as a zero-bias Class AB 2 amplifier in audio or radio-frequency applications.

Sold! Eimac 3-500Z

Share This Page Your name or email address: This will minimize thermal stress on the thoriated-tungsten filament wire, which can cause internal tube geometry changes with repeated cycling. I dont know what these are worth. All equipment must include safety enclosures for high ekmac circuits and terminals, with interlock switches to open the primary circuits of the power supply and to discharge high voltage capacitors whenever access doors are opened.

It has only been provided to the aide of the Radio Amateur Community. Share This Page Your name or email address: N5FUNMay 9, My email address is good on QRZ. Your name or email address: If this eimc 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.

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Thoriated Tungsten Voltage 5. Our moderators review every post in this forum and will flag or delete those that do not conform. I’m also interested in Begali cw products paddle especially However, no guaranty is provided for the consequences of any errors on this page, or anyone linked from here. Intermodulation ekmac listed are those measured at the full peak envelope power noted.

Sold! Eimac Z | QRZ Forums

Important Rules Have you read our Swapmeet Rules? All tubes have the plate cap that is attached by allen screw.

Operation with zero grid bias simplifies associated circuitry by eliminating the bias supply. Your name or email address: N5FUNMay 7, See zero-bias operation in Application Section Approximate value Per tube Nominal drive power is one-half peak power. Register for a free QRZ account. Two Z tubes in a single amplifier, chassis mounted, may be adequately cooled by use of a fan so mounted as to pressurize the space below the sockets.

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 circuit. Design equipment so that no one can come in contact with high voltages.

If grid bias is obtained principally by means of a grid resistor, the resistor must be adjustable to obtain the required bias voltage when the correct rf grid voltage is applied. Register for a free QRZ account. For best results with a single-ended amplifier it is suggested that the cathode tank circuit operate at a Q of eima or more.

3-500Z Tubes

Local pickup is welcome and I will except PayPal, money order, cash. Fans suitable for use at or near sea level are Pamotor Modelor Model Click to go home. K7JOEJun 16, Not would of gave After research I do not have the equipment or know how to De-Gas the tubes before use and did not want to risk using them so I installed a set of RF Parts ZG’s I had for another amplifier. But like all things in 3–500z, there are no guarantees to that and no way for me to test otherwise.

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When a socket other than the SK is used, provisions must be made for equivalent cooling of the base, the envelope, and the plate lead. KG9DDJun 17, I do not know what they are worth. Important Rules Have you read our Swapmeet Rules? These current 3-5000z cause no difficulty so long as the circuit maintains the correct voltage in the presence of the variations in current. Adjustment of the rf grid voltage to obtain the specified plate current at the specified bias and plate voltages is assumed.

Sold pending funds from N8WS. I’m open to other interesting stuff but I’d like to keep the lot of 3 tubes intact as someone who 3-500z them can getter them all, 3-500z them, and likely wind up with 1,2, or 3 good tubes. Show Ignored Content Thread Status: It’s a gamble though