Description

HIFI PSVANE 811A Audio Vacuum Tube One piece 811A 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. 1pc HIFI PSVANE 811A Audio Vacuum Tube for Tube Amplifier DIY HIFI PSVANE 811A Audio Vacuum Tube One piece 811A 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 60 89% 80 70% 100 55% 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 ROHS Compliant Good quality tubes Test and selected by factory 3months quality warranty from date of receipt. Payment Delivery details Terms of sales About us Contact us Payment We accept payment through PayPal, please contact us before bidding. For purchasing multiple items, Please email us for a combined invoice . Generally we would like to receive payment within 48 hours if paying by PayPal. We will not ship items until payment is received / cleared. Thank you for your understanding. Delivery details Most items are shipped by postal REGISTERED airmail service within the next 24 hours after received payment. When you buy multiple items that close on the same day, your items will be shipped all together with. We ship worldwide. Terms of sales If as some reasons your parcel gets lost or damaged in shipping, we will offer a refund or re-ship your order. However, delivery times vary so please allow adequate time for your parcel to arrive before requesting a refund or replacement. Postal service estimates for delivery are as follows: International - normally 7 to 14 business days, but can be up to 25 days due to traffices or custom inspection,ect. Also some countries shipment is a little longer. Remark: Business days are Monday - Friday and do not include Holidays About us We mainly supply audio amplifier, tube amplifier, guitar amplifier kit and diy components. Contact us If you have any question, please contact via ebay message before leaving neutral, negative feedback or opening any dispute. We will reply you within 24hours, ensure help you solve the problem, make your satisfied. Our working time from 8AM to 18:00PM.