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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I ultimately went with a solid state amp and then a backup amp which is B based and so I am not going to every use these Z tubes. Phone -FAX – Hi All, not quite sure how to work this one but here goes: The kit came with 2 new Eimac Z’s with date codes as seen in the pictures, I broke the seal on the boxes 3-50z week in order take pictures of the tubes and double check the date codes.
Sold! Eimac 3-500Z
Sincere effort has been given to provide an accurate and correct replication. This will minimize thermal stress on the thoriated-tungsten filament wire, which can cause internal tube geometry changes with repeated cycling. W0OLLJun 17, The anode of the operates at a visibly red color at its maximum rated dissipation of Watts.
Important Rules Have you read our Swapmeet Rules? This week I completed building it and am now testing and have a few minor items to adjust. These conditions assume rectangular drive waveform 3-50z0 a third harmonic, high-efficiency “Tyler” circuit Approximate value NOTE: All equipment must include safety enclosures for high voltage 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.
Your name or email address: These figures may change without notice as the result of additional data or product refinement.
rimac All tubes have the plate cap that is attached by allen screw. Register for a free QRZ account. The grid current which results when the desired plate current is obtained is incidental and varies from tube to tube.
Otherwise, even though the base of the tube is reinforced, damage to the base seals may result.
Sold pending funds from N8WS. Fans suitable for use at or near sea level are Pamotor Modelor Model Breakage will result in in flying glass fragements, so safety glasses, heavy clothing, and leather gloves are recommended for protection. Your name or email address: In all cases, air flow rates in excess of the minimum requirements will prolong tube life. K1FBIJun 17, Not would of gave N4XAEMay 7, In 3-50z, grounded-grid operation is attractive since power gain as high as twenty times can be obtained with the Z in a cathode-driven circuit.
When handling a glass tube, 3-00z that glass is a relatively fragile material, and accidental breakage emiac result at any time. Register for a free QRZ account. Make sure that you’re familiar with the rules before posting or replying in this area.
Sold! Eimac Z | QRZ Forums
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 3-50z0 another amplifier. Interlock switches must not be bypassed or “cheated” to allow operation with access doors open.
Shipping to Russia is more than the price offered and customs import is too difficult. Show Ignored Content Thread Status: N5FUNMay 9, Important Rules Have you read our Swapmeet Rules? 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 original now-SK owner, I would fully expect 3-500z to getter these before use.
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.
Adjustment of the rf grid voltage to obtain the specified plate current at the specified bias and plate voltages is assumed. It’s a gamble though I can only assume they are good-spare as 3-50z0 were marked as such by the former owner good-spare on a note affixed to each of the 3 tubes. The tube must be protected from severe vibration and shock.
Go take a chance! Thoriated Tungsten Voltage 5.
N5FUNMay 7, Our moderators review every post in this forum and will flag or delete those that do not conform. Our moderators review every post in this forum and will flag or delete those that do not conform. For best tube life, the inrush current to the filament should be limited to two times normal current during turn-on.
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These current variations cause no difficulty so long as the circuit maintains the correct voltage in the presence of the variations in current. I’m also interested in Begali cw products paddle especially There should be a serial number engraved on each one, so it would be OK sell with a refund option.
Local pickup is welcome and I will except PayPal, money order, cash. 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. The next 2 digits would be week within the year.