$42.99 Buy It Now or Best Offer
free,30-Day Returns
Seller Store doukmall
(57934) 99.4%,
Location: shenzhen
Ships to: US,
Item: 272952298100
Restocking Fee:No
Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Type:Vacuum Tube
PSVANE:PSVANE
811A:811A
Country/Region of Manufacture:China
MPN:DZG092
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Sign Up Now ! 1PC PSVANE HiFi 811A Triode Vacuum Tube Tested Replace 811 FU-811A for Amplifier Item description Notice: we have new customized version of PSVANE 811A, if you want please click: LINK Packing List 1*PSVANE 811A vacuum tube (tested) 811A is direct-heated type thorium tungsten cathode high µ triode, can be used as high-frequency oscillation power amplification. 811 is similar to 811A, they can be exchanged each other. Heater Uf————————————–6.3 V If—————————————4 A Maximum Rating Ua————————————–1250 V Ia—————————————125 mA Pa————————————–40W grid current—————————————50 mA Operating frequency and Ua When the operating frequency above 30MC, Ua and anode input power should be reduced as follows: Operating frequency(MC)Ua and anode input power 6089% 8070% 10055% When it is in constant working, the anode should not be allowed to have slight red; when in interrupted working, it should only be allowed to have perceptible slight red. Direct Interelectrode Capacitances Input————————————–5.5 PF output————————————–0.6 PF Grid to plate……………………………………………..5.5 PF Static parameter: Ua……………………………………………………….2000 V -Ug………………………………………………………2 V Ia………………………………………………………26 mA µ(Ia=20mA)……………………………………..160 Maximum rating in other operating conditions R-F power amplifier or oscillation, C amplifier (CW) CCS ICAS Ua………………………………….1250 1500 V Ia……………………………………175 175 Ma Pa…………………………………..45 65 W Pa (in)……………………………..175 260 W Ug…………………………………-200 -200 V Ig…………………………………..55 50 mA C amplifier anode-modulation, R-F power amplifier CCS ICAS Ua…………………………………1000 1250 V Ia…………………………………..125 150 mA Pa………………………………….30 45 W Pa (in)……………………………115 175 W Ug…………………………………-200 -200 V Ig……………………………………50 50 mA CCS: constant working ICAS: interrupted working A-F power amplifier or oscillation B amplifier, grid driving Maximum Rating CCS ICAS Ua………………………………………………1250 1500 V Ia (max. sig)……………………………….175 175 mA Pa………………………………………………45 65 W Pa (in) (max. sig)……………………165 235 W Recommended operating condition (Reference value) (The value of two tubes) CCS ICAS Ua……………………………………………1250 1500 V Ug…………………………………………….0 -4.5 V Ia (0)…………………………………………50 32 mA Ia (max .sig)……………………………..260 313 Ma Ũg (pk)……………………………………145 170 V Pd (max. sig)…………………………..3.8 4.4 W RL (a-a)……………………………………12.4 12.4 kΩ Pout (max. sig)…………………………235 340 W Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please don’t hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM – 18:00 AMNew York(US)Sunday to Thursday08:00 PM – 05:00 AMLondon(UK)Monday-Friday01:00 AM – 10:00 AMParis(FR)Monday-Friday02:00 AM – 11:00 AM During holiday, please allow us to response you early next week. Please don’t leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us
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