Two pairs of ECC83 tubes for sale, strong tubes, Mulard production in England, with I63 and B codes B901, B8B3, B784...
Early 60s...
The price is for one pair, please indicate which one you are interested in when purchasing, checked with L3-3 tester and Utracer 6 tester, details in the description.
Please inquire about the current postage costs before purchasing!
1:
SECTION 1
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,35 (mA) 112 % of nominal 1,2 (mA)
Ra : 51,48 (kohm) Ra = dVa/dIa
Gm : 1,93 (mA/V) 121 % of nominal 1,6 (mA) Gm = dIa/dVg
mu : 100 (-) mu = Gm*Ra
SECTION 2
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,25 (mA) 104 % of nominal 1,2 (mA)
Ra : 53,11 (kohm) Ra = dVa/dIa
Gm : 1,91 (mA/V) 120 % of nominal 1,6 (mA/V) Gm = dIa/dVg
mu : 102 (-)
SECTION 1
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,36 (mA) 114 % of nominal 1,2 (mA)
Ra : 51,52 (kohm) Ra = dVa/dIa
Gm : 1,92 (mA/V) 120 % of nominal 1,6 (mA) Gm = dIa/dVg
mu : 99 (-) mu = Gm*Ra
SECTION 2
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,25 (mA) 104 % of nominal 1,2 (mA)
Ra : 55,82 (kohm) Ra = dVa/dIa
Gm : 1,89 (mA/V) 109 % of nominal 1,6 (mA/V) Gm = dIa/dVg
mu : 98 (-)
2:
SECTION 1
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,58 (mA) 132 % of nominal 1,2 (mA)
Ra : 47,87 (kohm) Ra = dVa/dIa
Gm : 1,96 (mA/V) 122 % of nominal 1,6 (mA) Gm = dIa/dVg
mu : 94 (-) mu = Gm*Ra
SECTION 2
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,43 (mA) 119 % of nominal 1,2 (mA)
Ra : 47,88 (kohm) Ra = dVa/dIa
Gm : 1,97 (mA/V) 123 % of nominal 1,6 (mA/V) Gm = dIa/dVg
mu : 94 (-)
SECTION 1
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,59 (mA) 133 % of nominal 1,2 (mA)
Ra : 50,54 (kohm) Ra = dVa/dIa
Gm : 2 (mA/V) 125 % of nominal 1,6 (mA) Gm = dIa/dVg
mu : 101 (-) mu = Gm*Ra
SECTION 2
Test conditions:
Va : 250 (V) Swing +/- 25 V (10%)
Vg : -2 (V) Swing +/- 0,2 V (10%)
Test results:
Ia : 1,42 (mA) 119 % of nominal 1,2 (mA)
Ra : 50,53 (kohm) Ra = dVa/dIa
Gm : 1,97 (mA/V) 123 % of nominal 1,6 (mA/V) Gm = dIa/dVg
mu : 99 (-) mu = Gm*Ra