25.03.2017 13:58:40   uTracer3, GUI  V3.11  Pentode Quick Test
 
6KD8 6U8 #109
 
Test conditions:
Va  : 170 (V)                Swing +/- 17 V (10%)
Vs  : 170 (V)                Swing +/- 17 V (10%)
Vg  : -2 (V)                 Swing +/- 0,2 V (10%)
 
Test results:
Ia  : 1,79 (mA)              18 % of nominal 10 (mA)             
Gma : 545 (uA/V)             9 % of nominal 6,2 (mA/V)          Gma = dIa/dVg
Ra  : > 1M (kohm)            --- % of nominal 400 (kohm)        Ra  = dVa/dIa
mu1 : N.A. (-)               --- % of nominal 300 (-)           mu1 = Gma*Ra
Gm1 : 14 (uA/V)                                                 Gm1 = dIa/dVs
 
Is  : 0,65 (mA)              23 % of nominal 2,8 (mA)            
Gms : 170 (uA/V)                                                Gma = dIs/dVg
Rs  : 161,09 (kohm)                                             Rs  = dVs/dIs
mu2 : 27 (-)                                                    mu2 = Gms*Rs
Gm2 : -1 (uA/V)                                                 Gm2 = dIs/dVa