ECC82/12AU7 preamp tube

R. F. DOUBLE TRIODE. Uf = 6.3 / 12.6V, If = ca.300 / 150mA. Description: Ua = 250V, Ug = -8,5V, Ia = 10,5mA, S = 2.2mA / V, Ri = 7,7 kOhm, æ = 17 limits: Ua = 300V, Wa = 2,75W, Ik = 20mA, Ug = -50V, Rg = 1MOhm, Uk / f = 180V, Rk / f = 150 ohms. Capacitance (system I): Cg / k = 1,9pF, Ca = 1,9pF, Cg / a = 1,63pF. Capacitance (System II): Cg / k = 1,9pF, Ca = 1,8pF, Cg / a = 1,63pF. As phase inverter (system I): Ub = 250V, Ia = 0.7mA, Ia & # x92 = 0,68mA, Uo / Ug1 = 11, U0 = 15VRMS D tot = 1%. As phase inverter (system II): Ub = 350V, Ia = 1.0mA, Ia & # x92 = 0,93mA, Uo / Ug1 = 11, Vo = 24VRMS, D tot = 1%. Dimensions: (H / H with pins x Ø.): 49.2 / 55.6 x 22 mm