Valve/tube thyratron 6K25 par Ediswan Mazda (neuf dans sa boîte d'origine)

EUR 9,76 Achat immédiat, EUR 7,58 Livraison, 14-Jour Retours, Garantie client eBay
Vendeur: helmorehunt ✉️ (2.218) 100%, Lieu où se trouve: Bristol, Bristol, GB, Lieu de livraison: WORLDWIDE, Numéro de l'objet: 233217553280 Valve/tube thyratron 6K25 par Ediswan Mazda (neuf dans sa boîte d'origine) . For sale a 6K25 thyratron oscillator valve / tube by Ediswan Mazda, new in original box, fully tested and working. The 6K25 is an odd valve I wouldn't normally offer for sale, but putting it here in case anybody wants one for restoring a vintage TV set or just for experimenting with. It is essentially a sawtooth waveform generator, where a gradual increase in potential over and anode capacitor generates a steadily rising output, then the arrival of a synchronising pulse at the grid puts the valve into avalanche conduction, the capacitor is discharged and the whole cycle then repeats again. The 6K25 was used in many Murphy black and white TV sets of the 1950s and 60s, so if you have a set using one of these, this is an ideal purchase. To find them in brand new, 100% working condition nowadays is quite rare. This valve itself is in pristine, new, clean condition with all original markings and packaging. I do like playing with these, as their sawtooth output at audio frequencies nowadays sounds quite surreal and old-fashioned and they can be a lot of fun to play with. Beware the 6K25 is a signal level device, you should NOT use it to switch things like relays on and off! A chance here to acquire this rather rare device new and guaranteed working. A sensible price though - these old things don't store themselves for 60 odd years and then test themselves!! 6K25 Heater = 6.3V @ 0.95A Triode Thyratron: Anode / Plate:  400V / 500mA peak I offer a full, money back guarantee if you are not completely satisfied with this purchase (see terms). We have been trading since 1927 so bid with confidence. Most of our valves / tubes have been in our own stock room for many, many years. See our EXCELLENT FEEDBACK on quality valves / tubes previously supplied! We have thousands of valves / tubes in stock - standard and rare; US, UK and European. If you have any particular requirements, please send a message and if we have what you want, we will list it here. We ship worldwide and are very happy to combine items for multiple postage. TERMS GUARANTEE: In case of dissatisfaction, buyer must return item at own expense. We will only refund if you return the EXACT SAME VALVE / TUBE to us that you have purchased, with the heater still intact and passing continuity test . Believe it or not, some evil people have tried to send us back their dud tubes to try and get a full refund for a perfectly good tube we have just sold them! So, refund is a genuine offer, but at our discretion that we have been sent back what we actually sold you in the first place and that you haven't destroyed it through misuse! All returns under guarantee are limited to within 21 days of shipping. PAYMENT: We accept Paypal, cheques in GBP, UK postal orders / bank drafts or wire transfers. Please CONTACT US FIRST before sending payment by a method other than PayPal - there will be a delay in shipping while we clear your payment if you pay using these other methods. We are happy for you to collect from Bristol, but will require payment in GBP cash on collection.
  • Condition: Neuf
  • Model: 6K25
  • Country/Region of Manufacture: United Kingdom
  • Type: Thyratron Valve Tube
  • Brand: Ediswan Mazda

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