Klausmobile Tube Tester Files
Voskhod 09/1990, 1 hour burn-in. Both triodes match within 10%, all figures for triode #1. The other 6N1P with the same markings I tested is also quite close.
| Standard specifications per each triode | |||
| Parameter | Maximum | Operating Point | Measured (*) |
| Ua, V | 300 | 250 | 239 |
| Ug, V | - | -4.5 | -4.0 |
| Ia, mA | 25 | 8 | 8.0 |
| Pa, W | 2.2 | (2.0) | (1.9) |
| Gm, mA/V | - | 4.7 | 4.7 |
| Rp, kOhm | - | (7.0) | 7.9 |
| Mu, V/V | - | 33 | 38 |
(*) As close to standard O/P as the tester could approach. Anyway, a perfect match!
1. Full power curve. Asterisk marks standard operating point which is nearly on the edge of my meter. It should correspond to Ug=-4.5V, actually it's at Ug=-4.8V in this triode and -5.0V in the other one. 2 Watts per triode and 4 watts in heater - that's a very hot little tube!
Grey curve: Ig<5uA; Yellow: 5<Ig<20ua; Red:Ig>20uA. Measurements terminate at Ug>300uA (hardware limited)
2. Uheater=5V - full power curve. Note the oddities at extreme plate power (bleeding grid?). That's well above maximum rating, anyway.
3. 10mA closeup, normal Uheater
4. 3mA closeup, normal Uheater
5. 3mA / 120V closeup, normal Uheater
6. Gm/Mu/Rp measurements
Legend: White curves: Ig<5uA Yellow: 5<Ig<20uA Red: 20<Ig<300uA. Measurements terminate at Ig>300uA
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